Yamax2?

[eel]

Anyone shoved a 701 based engine in an x2 yet?

[BlueBreadTruck]

I was actually debating a gp800 engine myself......powervalved, 130 hp

[yamanube]

The japs are doing it...

[dbrutherford]

Yeah look at www.shinracing.com

[Bonzia Bob]

We are going to cram one in an X-2 this winter, keep an eye out for the build :sneaky:

[Big Kahuna]

Jeff Kantz use to have one stuffed in his X2 the last years he was competing.

[WFO Speedracer]

I would ask why but that would open up a whole nother can o worms wouldn't it?

[yamanube]

I would ask why but that would open up a whole nother can o worms wouldn't it?


do you really need to ask or just stirring the pot?

[WFO Speedracer]

No Really I want to know,I know why I put the Rotax in mine,I had everything here,it didn't cost me anything and the whole thing is totally reversible if I decide to go back with a Kawi setup later.I also have all the mod parts for that engine and the I know how to tune it.85hp in stock form is a good place to start from IMO.Now what are the positives to plugging in a Yami engine into that boat especially a 701? A 760 now that would make somewhat more sense to me,a 701 I just don't get,plus if you do mod it for a 701,its not easily reversable and you still have to spend quite a few dollars on parts to make enough power to be any fun.

[yamanube]

read this (http://www.x-h2o.com/showthread.php?t=25526)

[WFO Speedracer]

read this (http://www.x-h2o.com/showthread.php?t=25526)

I have already read that ,most of it does not apply to this.So list me the tangible reasons to swap a 701 into an X2.I can hear it already,it just hits so hard off the bottom :poke:

[yamanube]

A) the kawasaki 650 motor SUCKS
B) the yamaha motor has much better out of the box power than almost all of kawasakis motors
C) performance parts for the yamaha are EVERYWHERE used and new
D) they make much better power with the same parts/work and displacement than the kawasaki engines
E) ask the japanese, they are doing it in their freestyle X2's there must be some reason

just like the thread says, more bang for your buck especially in a freestyle app. a 701 is way better with bolt ons than a 650/750 and respond much better to mods

do this, ride a kawasaki 650sx with a pipe, then ride a 650 superjet with a pipe, then ride a kawasaki 750 with a pipe, the ride at 701 or 760 with a pipe which is better?

http://i162.photobucket.com/albums/t275/wadman3/x2-cus33.jpg


http://i162.photobucket.com/albums/t275/wadman3/x2-cus27-2.jpg

http://i162.photobucket.com/albums/t275/wadman3/x2-cus26.jpg

http://i162.photobucket.com/albums/t275/wadman3/x2-cus07.jpg

http://i162.photobucket.com/albums/t275/wadman3/x2-cus23.jpg

[WFO Speedracer]

Actually a KAWI 750 with just a pipe pulls better than a Yami 701 with just a pipe IMO.

[yamanube]

Actually a KAWI 750 with just a pipe pulls better than a Yami 701 with just a pipe IMO.


maybe (read maybe) on the top end, definitly not on the bottom end

[BlueBreadTruck]

I agree somewhat... a 701 is MUCH stronger than a 650....and with a Pipe it runs strong, however a kawasaki 750 with an equally good pipe would pull harder. especially if its not a big pin (top end porting vs 701 low end)

[extreemthrottle]

A) the kawasaki 650 motor SUCKS
B) the yamaha motor has much better out of the box power than almost all of kawasakis motors
C) performance parts for the yamaha are EVERYWHERE used and new
D) they make much better power with the same parts/work and displacement than the kawasaki engines
E) ask the japanese, they are doing it in their freestyle X2's there must be some reason

just like the thread says, more bang for your buck especially in a freestyle app. a 701 is way better with bolt ons than a 650/750 and respond much better to mods

do this, ride a kawasaki 650sx with a pipe, then ride a 650 superjet with a pipe, then ride a kawasaki 750 with a pipe, the ride at 701 or 760 with a pipe which is better?



i have to disagree with you , the kawi twin platform,either 650 or 750 is one of the most reliable motors out there, its just as reliable as the yamaha twins (61x). thats why they put those motors in so many skis for so long.

and as far as bottom end i still have'nt ridden a ski with similar mods to either my old 650sx or my old x-2, that had the brap we all look for. i got a b-1 now with more mods and has less bottom end and had more problems then both of the others combined! its all an opinion and they're like a$$holes, everyone's got one.

yes the yamaha a/m parts are more available, and there were probably more yamahas sold over the last 15 years than kawi,which would explain the availablility of new and used parts.. just my two cents..

[WFO Speedracer]

Truefully I want to hear why a 701 swap makes more sense than a 750 swap.I know the 750 pulls harder,parts are plentiful,its a bolt in,all the electronics swap over,it goes in just like it was made to be in there.

[yamanube]

I have never ridden a 650 with any amount of bolt ons that had an acceptable amount of low end power and not even close to what my 701 was stock. I have only ridden one 750, it was a dual carb in great shape and it was a turd down low, reasonable mid range and good top end. It just seems that kawasaki motors have a different powerband, even the SXR doesnt have the low end grunt I was hoping it would. If the kawasaki 750 engine was the powerhouse you claim it is I would think you would see more 750sx(I)(Pro) set up for freestyle but they are fazed out. IMO I think the ONLY reason it is the desired choise for an X2 IS because it bolts in, I would bet if the 701/760 bolted into an X2 you guys would be singing a different tune!

[WFO Speedracer]

Lets compare apples and apples shall we,if you want to talk SX or X2 vs SJ lets compare 650 to 650,not 65o to 701 hmmmmmmmm not that much to talk about is there?

[yamanube]

Lets compare apples and apples shall we,if you want to talk SX or X2 vs SJ lets compare 650 to 650,not 65o to 701 hmmmmmmmm not that much to talk about is there?

Sure
yamaha 650 > kawasaki 650
yamaha 760 > kawasaki 750
yamaha 800 ? kawasaki 800

WEDOO Im surprised you are not on my side, it seems the only reason you have skis is so you can swap in some wierd ass motor combo to make a never ending project out of it. You ride a 300, and I dont even want to bring up the wierd ass sitdown with a pole idea you had.

[WFO Speedracer]

Lets stick with the 650 version,a strong case can be made that the 750-760 isn't a fair comparison because of the displacement difference and the larger carbs used,also on the 800-800 because one engine has power valves and the other does not and one uses much larger carbs.I will let the carb issue slide on the 650 Yami,its a pig regardless of carb size ,oh and BTW quit sidestepping.

[yamanube]

Lets stick with the 650 version,a strong case can be made that the 750-760 isn't a fair comparison because of the displacement difference and the larger carbs used,also on the 800-800 because one engine has power valves and the other does not and one uses much larger carbs.I will let the carb issue slide on the 650 Yami,its a pig regardless of carb size ,oh and BTW quit sidestepping.

So what you are saying is...

yamaha 760>kaw 750 (10cc really that much difference? 1.33%more displacement) yamaha 800>kaw800 ???
irregardless of how they are equipped, the can both be considered stock, wouldnt it be easier to just say Im right?

Do you really think a kaw650 with say a SBN44 and a pipe makes more power than a yam 650 with a pipe? Not only is that BS IMO but its has absolutely nothing to do with the topic of the thread (which is what I was trying to argue) swapping a 701 into an X2 is SOOO much better than a 650 and IMO better than a 750. What am I sidestepping now?

[dbrutherford]

I wouldn't go so far to say that a Yami 650 is better than a Kawie 650! I had a stock 95 X2 with the a primer and the water restricted to the exhaust pipe some. Well it would smoke my friends stock 650 square all day long.

I will be the first to admit though my stock 650's are weak!

Also I had a group K modded 750 SS engine in a 650 SX that I was not very impressed with the power difference over a modded 650. The ski had every bolt on imaginable on it too. Then again I suck at carb tuning and the jetting was never right.

A friend once had a 750 SXi Pro with a dry pipe that would rip your arms off in the mid range. However for right out of the hole bottom end... you better wait for the mid range to kick in and hang on.

Any 701 I ever rode was stock and had a decent pull especially after I jumped right off a stock 650 X2.

No matter what engine you compare, they all have their flaws as far as power output. We all want more power! To pull the big tricks, you will NEED that power!

So as far as engine swaps go for my X2's... I will just use a Kawasaki 750 SXi Pro or ZXi engine or get an 800 SXR engine. The swap is far too easy to curse yourself and use a Yamaha engine.

Finally it doesn't matter how much power you have if it isn't getting to the water! You better have a good pump/prop/grate/plate/nozzle setup to hook it all up.

[WFO Speedracer]

So what you are saying is...

yamaha 760>kaw 750 (10cc really that much difference? 1.33%more displacement) yamaha 800>kaw800 ???
irregardless of how they are equipped, the can both be considered stock, wouldnt it be easier to just say Im right?

Do you really think a kaw650 with say a SBN44 and a pipe makes more power than a yam 650 with a pipe? Not only is that BS IMO but its has absolutely nothing to do with the topic of the thread (which is what I was trying to argue) swapping a 701 into an X2 is SOOO much better than a 650 and IMO better than a 750. What am I sidestepping now?

You see you still haven't told me why it is soooooooo much better ,you haven't told me that because you can't.Yes I will say a Kawi 650 with a pipe and a 44mm carb will be faster than a 650 yami with a pipe and a carb.

[yamanube]

You see you still haven't told me why it is soooooooo much better ,you haven't told me that because you can't.

I have no way to physical prove to you that one is better (this is the internet) thats why I said ride and compare (650kawi650yami, 750kaw760yami, etc..) now you are just trying to start a pissing match because you have nothing better to do other than work on your hot vapor powered wetbike which you are waiting on parts from russia to finish. Im not playing this game right now....call up one of those "little japanese fellers" and ask them why they do it, they seem to be ahead of the curve.

[crab]

The irony here is thak the yami guy's want the longer stroke like the Kawi's, and the kawi guy's want the bottom end porting like a 701.

[WFO Speedracer]

I have no way to physical prove to you that one is better (this is the internet) thats why I said ride and compare (650kawi650yami, 750kaw760yami, etc..) now you are just trying to start a pissing match because you have nothing better to do other than work on your hot vapor powered wetbike which you are waiting on parts from russia to finish. Im not playing this game right now....call up one of those "little japanese fellers" and ask them why they do it, they seem to be ahead of the curve.

Really I knew all along that you couldn't tell me ,its just a silly little game some of you like to play here,you say its better but can't say why,theres no proof because well,there is no proof.Its all smoke and mirrors ,its just better because you say it is.I have ridden and compared a large amount of watercraft.This is what I have found,the highest percentage of repairs here are on Seadoos,next Yamaha and last Kawasaki,is that because Kawasaki's are some paragon of reliability no it is directly related to sales Seadoos sell very well here followed by Yamaha and then Kawasaki.Are their certain things Yamaha does that are better than everyone else,sure but the same can be said of Seadoo and Kawasaki or Honda for that matter.Your arguement is lame .Ideally you would have a Kawasaki stroke with a yamaha cylinder ,Seadoo power valves and a Polaris ignition..:dunno:

[Big Kahuna]

i have to disagree with you , the kawi twin platform,either 650 or 750 is one of the most reliable motors out there, its just as reliable as the yamaha twins (61x). thats why they put those motors in so many skis for so long.
This topic is not about reliability, it is about putting a Yamaha motor in an X2.

and as far as bottom end i still have'nt ridden a ski with similar mods to either my old 650sx or my old x-2, that had the brap we all look for. i got a b-1 now with more mods and has less bottom end and had more problems then both of the others combined! its all an opinion and they're like a$$holes, everyone's got one.

compairing the mods in your 650sx and x2 to a modded 701 Blaster is not apples to apples either, it takes alot of power to really make a blaster hit good off the bottom.
yes the yamaha a/m parts are more available, and there were probably more yamahas sold over the last 15 years than kawi,which would explain the availablility of new and used parts.. just my two cents..


If you take a 650 Kawi motor and a 650 SJ motor and apply the same mods, Pipe, head... the Yamaha motor will make more power off the bottom, it is how the motor is setup... why do you think Kawasaki has made so many changes to the 750 motor setup over the years, one year the 750 would make good bottom end but horrible top, then a few years later it was god top with horrible bottom... and If I am not mistaken they actually designed the SXR 800 cylinder to have better bottom end, why? because Kanimori knew what could be gotten out of the motor after a few mods were added to it, you can always find more top end power out of any motor, you just cannot make them get bottom end if they are not designed for it.

[yamanube]

My 'argument' is entirely what this thread is about...I guess you should stick to PWCtoday if you feel you are king dingaling here. Not as many people are as impressed by a little bit faster kawasaki 300 or a seadoo powered X2(WR3 with a pole WTF?), rather talk about swapping in a proven, versatile and readily available engine into a cool vintage ski. You have barely posted any on topic information rather just spout your experience in an attempt to raise yourself above.

[dbrutherford]

If you want to test reliablilty.. give me your ski... I can Fugg up any engine!

Still though, a stock 650 square is not as hyped up as people on here make it out to be. Just as a stock 650 X2 is not all the hype. I own two and will admit it. Now drop a bigger engine in there, soem handeling ie pump mods, and you have a nice ski.

The stock square I rode handled great. But then again it wasn't going very fast to get squierly yet. That dry pipe 750 SXi Pro I talked about... it was like riding a pencil it was so out of control. The dry pipe power didn't help that either.

Round Nose SJ's are good at what they do, power to weight and that power is better down low than a Kawie of the same displacement. How much better? Not worth going out and buying a ew SJ for it! 10+ years with just BNG?

Most of the Japanese X2 guys are putting big bore Kawie powerplants in them. Those pics of the 701/760 versions are not as common.

[WFO Speedracer]

My 'argument' is entirely what this thread is about...I guess you should stick to PWCtoday if you feel you are king dingaling here. Not as many people are as impressed by a little bit faster kawasaki 300 or a seadoo powered X2(WR3 with a pole WTF?), rather talk about swapping in a proven, versatile and readily available engine into a cool vintage ski. You have barely posted any on topic information rather just spout your experience in an attempt to raise yourself above.

If you have some kind of personal problem with me perhaps you should take it to pm,this is really not the place for it.I don't know what your damage is besides that you started something that you couldn't finish here,really what are you doing in this forum argueing anyway? It's an X2 forum last time I checked,also last time I checked your ownership of a Superjet does not make you in any way ,shape form or fashion superior to me.I seem to remember taking a lot of my personal time measuring and figuering on a certain Thunderjet project you were working on a while back,now what was your beef with me again?Btw it seems several people are interested in modding 300sx's now,much to your dismay and the Thunderjet was the coolest thing since sliced bread when you owned it.Since when is a Rotax 720 not a proven versatile readily available ebgine?I am not in the Superjet forum thrashing it,it really makes you look like a d#ckhead.

[betrezra]

A yami in a x-2 hull could be cool..... but why when big power kawi's are plentiful and cheap....

I just picked up a good 750 small pin engine just rebuilt top end for $350 shipped!!!!

I've yet to find anything with yami on it even close to that.

-------------------------------------------

PS - Don't feed the trolls.... they're running around the x-2 forums these days :) :)

____________________________________

[dbrutherford]

I have no problem with SJ guys. But I will say it gets old when all I ever hear is how I should get an SJ. I will get one, just not yet. Maybe when the 4 bangers come out and the price drops some. I paid around 800 for each of my X2's and I have tons of parts just waiting to get put on them. Since RN's are more newer than X2's I would like to know how many super clean barely used 800 dollar SN's are out there?

I admit it I really would like a new RN. But once you look at the price and the cost of all the aftermarket parts you will have to buy... I may just save up for a complete turnkey boat once there are more players making them.

[yamanube]

Great lets make this a superjet powered argument....so back on topic, we are talking about X2s.




701 in an X2, yeah people are doing it. Looks cool, what else?
For what reason does the 701 not go in easily because it is designed with 2 seperate bed plates so it sits to low?

(this is not a, why we should run a kawasaki motor in our kawasaki, its ABOUT 701 powered X2 if anybody is trolling its the guys who pointed the finger because I own a superjet I am now allowed to talk about anything else, dont get all butthurt, wedo try and stay on topic)

[Big Kahuna]

guys, I am going home for the night, would it be all possible to hold off the insults, name calling until sometime tomorrow morning, I would like to go home, drink a beer and chill out............

Personally, I want to see an Tigershark 770 motor installed in an X2

ducking and running...........

[yamanube]

If you have some kind of personal problem with me perhaps you should take it to pm,this is really not the place for it.I don't know what your damage is besides that you started something that you couldn't finish here,really what are you doing in this forum argueing anyway? It's an X2 forum last time I checked,also last time I checked your ownership of a Superjet does not make you in any way ,shape form or fashion superior to me.I seem to remember taking a lot of my personal time measuring and figuering on a certain Thunderjet project you were working on a while back,now what was your beef with me again?Btw it seems several people are interested in modding 300sx's now,much to your dismay and the Thunderjet was the coolest thing since sliced bread when you owned it.Since when is a Rotax 720 not a proven versatile readily available ebgine?I am not in the Superjet forum thrashing it,it really makes you look like a d#ckhead.

Like I said I am not playing your game. I was trying to keep it X2 only but you derailed that train quick. Sure you measure the length of the laserjet driveshaft, thanks :hail:the self appointed laserjet expert:hail: and for your info the Thunderjet was by far not the coolest thing when I owned it (ask anybody who rode with me). Take it to PMs, do whatever makes you feel good but dont play the poor me game I know your type and have seen you try and turn arguments around on other people take your garbage to private messages, I dont care but dont rush for the last word to make me look like a "d!ckhead" thats an exgirlfriend game.:smashfreakB:


sorry BK, I was typing while you posted...Im done

[WFO Speedracer]

I have test fitted pretty much every engine available to me that will physically fit and several that would not into the X2 hull,comparatively the 701-760 engine transplant seems to be one of the more difficult to fit in.That is why I ask why this particular engine.

[yamanube]

I have test fitted pretty much every engine available to me that will physically fit and several that would not into the X2 hull,comparatively the 701-760 engine transplant seems to be one of the more difficult to fit in.That is why I ask why this particular engine.

For what reason? Hits the bottom of the hull or the mounting area is not on the right alignment?

[WFO Speedracer]

Mounting areas are way out of alignment,now if someone had bed plates that adapted it up that would be another thing entirely.

[BlueBreadTruck]

honestly, I like the 701. My blaster has one...and yeah tons more power than a stock x2.

And not to say that a B-piped 701 is slow..not in the least...they plain rip.

However my small pin 800 with a blaster chamber is much faster low end and top end than a b-piped superjet....i have raced one.

I know its bored to an 800, However why goto the work of trying to get a yamaha engine to fit, when a 750 will literally bolt in and have the potential to be faster?

That being said, I think a stock 701 x2 would be TONS of fun to ride....but im not going through all that work.

[crab]

It really comes down to the whole Ford vs Chevy thing, both make great power when done right. Dan Hansen finally convinced me to stay team green and build it up, since you already have the longer stroke working for you. Bluebread, did Sand do your motor?

[dbrutherford]

It really comes down to the whole Ford vs Chevy thing, both make great power when done right. Dan Hansen finally convinced me to stay team green and build it up, since you already have the longer stroke working for you. Bluebread, did Sand do your motor?

I hate it when people build a Ford roadster and put a Chevy engine in them. Never understood why but someone told me that it is was because the Chevy drive line was easier to mock up in the Ford chassis/body.

[crab]

I hate it when people build a Ford roadster and put a Chevy engine in them. Never understood why but someone told me that it is was because the Chevy drive line was easier to mock up in the Ford chassis/body.Simpler and cheaper, just price out a simple rebuild on a 350 chev vs 302/351 ford. Even the aftermarket parts are less, ford changed stuff all the time year to year. I may be putting a big bowtie on my Ranchero, we'll see. They even make HEI chev distributors now to fit fords.

[betrezra]

The cool thing is there are plenty of options.... so If you have the gumption to ACTUALLY do something rather than talk... then get after it and show us some pics of a cool build.

The whole yam vs kawi thing is played out...... yadi yaddaaa.... who cares.

I'm a fan of fast and unique. If you've actually built something rare and unique and FAST.... then post it.

Not too impressed with a bolt-on ski.... big deal. Let's see the cool swap skiis.... they get me fired-up.

Who actually has a yami-x-2?....... let's see the goods!!!!!

Vids pleez........ REAL experience would be nice.

[dbrutherford]

I hear X2 Cartel has a hydrogen peroxide injected high presure....


I saw a show on discover where this hydro racing boat had twin gas turbine engines in a boat that competed against the Miss Bud Weiser boat. They make smaller turbines, that engine may be an opppurtunity. Those engines wouldn't like water injestion too awful much....

[BlueBreadTruck]

It really comes down to the whole Ford vs Chevy thing, both make great power when done right. Dan Hansen finally convinced me to stay team green and build it up, since you already have the longer stroke working for you. Bluebread, did Sand do your motor?

who is sand? I just had it bored and put it togther myself...nothing special at all....no porting, even runs the stock head @ 180 psi.

[Legdragger]

I think it would be cool to have an easy kawi to yamaha conversion kit. I would try one with a 5 mill lamey on it. But that is quite an engineering project to make the swap when I know I have limited time a money that I would rather spend riding and going on trips to make new jet ski friends. A nice kawi big bore goes real good and is easy to drop in although even that has conflicts with dual carbs and electrics and gas tanks.......

Please try to remember:
This is the X2 section, don't take it serious enough to get offended, we are just having fun.:bananalama:

[eel]

These are my reasons.
A kawi 800 sxr engine is a time bomb when you start to make serious hp.

You can get good useable and relatively reliable power out of a 701 BASED engine.

You can just about get parts for it at your local convenience store.

x-h2o and ebay is full of goodies.

I wouldn't use an upright rotax as an anchor, they are not worthy of that.

[Legdragger]

How much powe does a 780 XP motor make? They are kinda cool looking motors with the power valves.......

[djyox]

Ford vs. Chev.

Every 650sx/x2 I've been on is dullsville. I would never believe the hype that you can make good power out of a 650, no matter who was telling me, UNLESS I rode one that had good power I would listen then, but not until I felt it for myself.
I already fell for that money pit once on believing that the 550 could be made into something. My 550 got lots of goodies, and went through two motors just to do both the PP and Reed, both were huge disapointments, compared to other skis.


However, my first time on a SJ was the 650. I'm unsure of what was done under the hood, but it had good power and compared to my 550 was a great ride! I can't say the same about the kawi 650s. I honestly think that was the redheaded step child and kawi should have dumped them or never even made them and just jumped right into the 750s.



Now the real question I would love to see answered, is what motor/setup are those japs running in those videos??? Can a kawi be built to have low end punch like a yamaha? How much porting work would have to be done to do that? PJS 800s have good low end? what about those?



Well Pete seems to be having fun on his kawi base motor, so I'm following suit for my x2 project and getting a 750, and will be building that up. However, if I did know how to fit the 701 in the x2, I would be all over that.

[WFO Speedracer]

How much powe does a 780 XP motor make? They are kinda cool looking motors with the power valves.......

110 hp stock but without putting a full vee into the hull and major glass work it won't fit,already looked at that one,it sits too high and the starter won't clear,the 720 with some minor mods to the stock bed plate is pretty much a bolt in.I have plenty of spare parts,but I haven't seen too many 720 engines grenade.There are plenty of these 720 engines in hx race boats and they hold up fairly well with way more mods than this one is going to have.

[D Slicker]

I have an extra ported 701 sitting in my shop and know my way around an X-2. New project???????

[wadman]

I have an extra ported 701 sitting in my shop and know my way around an X-2. New project???????

sounds like a plan.

dibs if you ever want to get rid of it.

[djyox]

110 hp stock but without putting a full vee into the hull and major glass work it won't fit,already looked at that one,it sits too high and the starter won't clear,the 720 with some minor mods to the stock bed plate is pretty much a bolt in.I have plenty of spare parts,but I haven't seen too many 720 engines grenade.There are plenty of these 720 engines in hx race boats and they hold up fairly well with way more mods than this one is going to have.
How cheap can one of those 720's go for?

[WFO Speedracer]

How cheap can one of those 720's go for?

As cheap or cheaper than a yami-kawi engine setup,I wouldn't advise it unless you have acess to lots of parts like I do as finding all the ingition-electronics can get expensive.I am running a 93xp ignition which is configured to run without an MPEM and uses a seperate rev limiter.This and the older yellow engine 587 ignition are the only ones that will work without an MPEM. BK can we resume the namecalling now? J/K we worked it out.

[dbrutherford]

Yamanube, sorry if I sounded like I was getting on your case. I wasn't trying to. I want a SJ myself but I have to wait until they come down in price some or I get more debt paid off. I like the idea of having a stund up but similar to an X2 with a conversion hood :)

[Legdragger]

I nominate DSlicker to engineer a conversion kit for us to put Yamaha motors into Our X2's!

Just step on his foot so he can't ride for a few months and he will have it all figured out for us.......:nutkick:

[yamanube]

Wedo, how about the 657X seadoo motors? It seems SD engineered that motor pretty well at like 85hp out of the box.

[kevbo]

I don't think quick throttle response is as important for an X2 as it is for a standup. I would rather have the most power I could get even if it came with a slight lagg. A high ported Yamaha is no better than a high ported Kawasaki. I could make a Yamaha fit but probably won't mess with is as long as there are plenty of big pin 750s around.

[WFO Speedracer]

Wedo, how about the 657X seadoo motors? It seems SD engineered that motor pretty well at like 85hp out of the box.

The 650 would work also especially an X engine but the 720 has the same stroke and a lot bigger bore.The 720 will go out to 754cc's with a 2mm overbore,the liners are thick enough to accept that size bore.

[D Slicker]

I nominate DSlicker to engineer a conversion kit for us to put Yamaha motors into Our X2's!

Just step on his foot so he can't ride for a few months and he will have it all figured out for us.......:nutkick:

:haha: Thanks pete. I have to get one of the hulls back I sold first. :argue:

[Legdragger]

:haha: Thanks pete. I have to get one of the hulls back I sold first. :argue:

I can donate a hull to that project, no problem.:veryhappy:

[D Slicker]

I would need hull, pump, center bearing carrier driveshaft, bed plate and motor mounts. Now i regret selling everything.

[Legdragger]

I would need hull, pump, center bearing carrier driveshaft, bed plate and motor mounts. Now i regret selling everything.

Consider yourself sponsored!

When are you visiting your Grandmother? I will bring it down to her place when you come up.

[D Slicker]

I probably wont be there till December. November is really busy for me plus I have to finish my SJ before I start another project.

[djyox]

Hell yeah! Hope you figure out something cost effective and that works well!

[X2guy]

Ive been toying with this idea for a while and wanted to be the first but then started to ask myself why? I always want more power and was thinking about building the engine up that is pictured to plop in my X2. It's a set of 62T cases with a brand new Able top end. All I needed was a stroker crank and a set of pistons. Oh...and also some mega port work. So with this engine I'd be at a 73mm stroke and a 82mm bore. 785cc's or something like that which is still smaller than my 800cc small pin. Would the yami be better than my kawi....Maybe but it wouldn't be worth the additional $2500 to build it up.
Now what kind of stroker options do we have for kawi's? With a stroker crank I'm sure we could get them up to 900cc's and if ported right make gobs of bottom end.

[w-nut]

i have considerd the stroker crank as well useing big bore sleaves bored out to 84.5 and a 5 mm stroker crank takes you to 886.2cc for big pin or small pin 85 and a 5mm stroker crank 896.7cc

[D Slicker]

I looked at some of the jap sites and it lookes like they are using the stock bedplate for a 650/750 somehow.

[Legdragger]

I looked at some of the jap sites and it lookes like they are using the stock bedplate for a 650/750 somehow.

Very interesting......

[shawn_NJ]

Brent,

If you are serious, I have these:
pump, bed plate and motor mounts, and my green 95 hull (will need someof your glassing skills)

That I will def donate to the cause!

[D Slicker]

Brent,

If you are serious, I have these:
pump, bed plate and motor mounts, and my green 95 hull (will need someof your glassing skills)

That I will def donate to the cause!

Shawn, I sent you a pm.

[BlueBreadTruck]

if anyone does this, I would be very interested. I have a basically complete x2 hull that I could make work if i got a 701.....

I welded up the bedplate myself for my js 300/650 swap and it really wasent that hard.....just took a bit of time to line everything up and then weld it in place...i used a 650 bedplate and modified it quite a bit.

I would say it would be easyer with a bottom set of 701 cases so you have good access to make sure the coupler has correct alignment.

[Legdragger]

It really isn't re-inventing the wheel but it is one of those projects I have little motivation for. I am sure Brent can make it work if he has the time and energy.

[D Slicker]

It really isn't re-inventing the wheel but it is one of those projects I have little motivation for. I am sure Brent can make it work if he has the time and energy.


I just need to finish my SJ then I am on it.

[djyox]

I just need to finish my SJ then I am on it.
Awwwwwwww..........

[D Slicker]

Awwwwwwww..........

I should be done by thanksgiving (hopefully)

[Legdragger]

Nice!!

[thundercat]

I have a bed plate too mount a 701 in a x-2 $200.00

[shawn_NJ]

I have a bed plate too mount a 701 in a x-2 $200.00

Can you post a pic?

[X2guy]

I have a bed plate too mount a 701 in a x-2 $200.00

Really? I kept emailing those shin racing guys asking to buy a bed plate to save me the engineering but no one got back to me. I work for a Japanese company and asked one of the guys to read my google translated email...he told me it made no sense. Thats when I started to give up on this project and started asking why?

[Legdragger]

Something is fishy with this guy.. I have never heard of such a thing existing and he happens to have one and none of us know the guy? Right..........

[yamanube]

Something is fishy with this guy.. I have never heard of such a thing existing and he happens to have one and none of us know the guy? Right..........

He had another thread with it for sale for $150. He seems to spend more time over on PWCT.

[D Slicker]

I sent an email to shin racing also with no response but then again i didn't expect one.

[djyox]

He had another thread with it for sale for $150. He seems to spend more time over on PWCT.
But a picture for an item that is for sale shouldn't be out of the question... If I knew the guy was ligit and had what he says he has, I would be all over it...

AND I would lend it to one of you builder guys to make some copys or what ever needed to help others get a lovely 701 in their X-2...

[dbrutherford]

Yeah I wanna see a picture!! You know what they say... a thousand words or something...

[thundercat]

I can make all the plates you want and the price will drop also I try to post a pic by the weekend

[WFO Speedracer]

Interesting maybe he's just in the right place at the right time?:rant:

[Legdragger]

Those things will sell like hotcakes if they work. Can you show a picture of a motor in a hull with one? I will sign up for one if they work. Then I will be getting a Tim Judge 5mm lamey to go in it!

[WFO Speedracer]

Those things will sell like hotcakes if they work. Can you show a picture of a motor in a hull with one? I will sign up for one if they work. Then I will be getting a Tim Judge 5mm lamey to go in it!

You know you say that but in actuality when a company does come out with something like this it doesn't sell,IE the R&d pump cone-big hub conversion.I think as a whole the X2 riders are thrifty,there are some out there that will spend whatever to have the best of the best but X2 riders in general are a sub section of a sub section of a sub section and the guys who want a Yamaha engine in their X2 are a sub section of that group.

[Vumad]

Why would you build a yamaha out of a Kawi? The 750 can hit hard enough. I would venture to say that if people want a yamaha engine that bad, they will go the route of a SJ conversion ski and same themselves a lot of aggrivation and money.

It would be like this... If your going to "upgrade" to a yamaha powerplant, then you're probably going to want to "upgrade" to a yamaha drive line, then you're probably going to want to "upgrade" to that super nice Yamaha bottom deck. Not much of an X2 anymore...

[Legdragger]

It would make it easier for a Yamaha guy to retrofit all his Yamaha parts if he wanted to play around with an X2 and not have to start a new collection of Kawasaki parts. There is no need to upgrade the pump. The 650 pump can be upgraded to an SXR prop and big hub, or you can put a 750 pump in it pretty easily and upgrade that to a big hub setup or you can go with a Kawi based Mag pump and get a legit big hub.

Overall the Kawi driveline is easier to align and cheaper to fix than the Yamaha. I have never heard of a kawi blowing drive line splines although I am sure anything can fail.

[shawn_NJ]

I am DEFINETLY in for one. Team Sceam 5mm stroker going in mine if this is real...lol

[2nd nature]

i spoke with some one thats did this mod.said it wasnt hard.. im looking for an x2 hull myself. planning on sticking a yami based motor set up in it. id like to stick my jetworks 4 mil in one.getting bored on not having a ski to fix or work on. cant figure out if its a good thing or bad.

[wadman]

Those things will sell like hotcakes if they work. Can you show a picture of a motor in a hull with one? I will sign up for one if they work. Then I will be getting a Tim Judge 5mm lamey to go in it!

i would take a plate too. how much is a Tim Judge 5mm lamey? i would take a plate too.

[djyox]

I would run with a yamaha motor because I'm going to be either putting money into a kawi motor, or I could put it into a yami motor.... My personal prefrence is yamaha. If I can run either, have to buy both a new motor and ebox anyhow, then why not pick what I want to run??



If you can get us some more info on those motor mount plates for the 701, let me know! Because I'm going to have to buy a 750 motor soon, and I wont waste my money on one if I can get one of these plates.... So the sooner the better!!! Don't let me buy a kawi motor.... save me... save me....

[Legdragger]

If I have a yamaha motor in my X2 then the 840 goes in the Jet Mate!

Anyone want to go barefoot water skiing! Whoo Hoo!

[thundercat]

Here's a couple of pics. I do not have a picture of the ski with the motor in it, but I ran a 750 hull with a 701 motor in it all summer. It had a mod Blaster B pipe on it. There is one mod that you will need to do to the case. You will need to shave one of the case bosses, as you can see from the picture, down other than that the plate will bolt right up to a 650 or 750 Kaw. I have done many other conversions, for example, I used an Ultra motor in a SXI Pro. So for the bad new, I am not a computer jockey so I will not be able to post a lot on this very often. If you want one PM me.

[dbrutherford]

How about some more pictures of that Ultra engine in the stand up! Your conversions look good! Keep them coming!!

[Legdragger]

Thundercat, where are you from?

[shawn_NJ]

Thundercat, let me know if you have more! I'm IN! Holy chit, I cant believe its for real....lol

[djyox]

My goodness!!!

When are you going to be making more?

[Legdragger]

That looks way too easy to make now that I see it. Nice work.

[dbrutherford]

That looks way too easy to make now that I see it. Nice work.

That is what I thought. Then again I have never fooled with many Yamaha engines. Won't a billet Kawasaki styke coupler be needed on the Yamaha engine to match up with the drive shaft coupler? I htough someone made those billet couplers for Yamaha's that turned them into Kawie styles? I still wonder about drive shaft alignment.

[BlueBreadTruck]

first of all, that is a 650/750 plate.......i would love to see the bottom.... I have like 5 extra bedplates, i need to find a spare set of 701 cases so i can mock it up...ill use my spare x2 hull!

the coupler issue is allready solved. my buddy broke his superjet couplers and ordered a UMI coupler set, and they use a kawie connection, so you just change the engine side coupler and its a drop in deal.

With yamaha engines being cheaper to go to the next step...IE powervalves, strokers, etc.....this might be the way to go!

[WFO Speedracer]

Yeah I looked at this with some spare engines and bedplates I have laying around,I don't really get what bolts he is using to mount up at the front of the engine,nothing lines up there.

[djyox]

I guess I can't see what you guys are seeing in that picture.... I think I would need to buy one from you talented mofo's...

[WFO Speedracer]

I am glad I am not the only one not seeing it.