Super Jet Not another 760 in a sj thread!!

not knowing is sometimes a blessing. i wish i didnt know now what i didnt know then. i consider an all around ski one you can barrel roll, back flip , cruise around on or hit some buoys with.

Just because you can't backflip/barrel roll easily does not mean a ski is not a good all around rider, everyone has different needs and wants. I agree a 701 is better motor but you can not tell me a bolt on 760 is going to suck. We all know a RELIABLE and POWERFUL SJ costs a few k at a minimum (with some lucky exceptions) so if you can get something close for considerably less where is the harm in that? Just as you say at the end of the day its still a square but you can say that about anything, :):):):) I just spent a few k on my Jeep Wrangler to lift it put tires ect ect and I am still limited by my short wheelbase when it comes to certain kinds of wheeling, that doesn't mean my setup sucks it means I am enjoying what I have. Sure I could go finance a new 2013, but why when my 2003 makes me happy? Same thing with skis, not everyone (in fact most people don't) need a KDX1200 or Superfreak with some crazy motor to have a good time.
 
Ok so here's what I want out of my ski. I would like to have a motor that will help me be able to barrel roll and flip off of boat wakes and maybe do flatwater rolls. I know technique is a much larger part rather than power, but hey power didn't make anyone worse at it right? So will I be able to get enough power outta this 760 to accomplish my mission without going crazy sinking too much money on it?
 
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Ok so here's what I want out of my ski. I would like to have a motor that will help me be able to barrel roll and flip off of boat wakes and maybe do flatwater rolls. I know technique is a much larger part rather than power, but hey power didn't make anyone worse at it right? So will I be able to get enough power outta this 760 to accomplish my mission without going crazy sinking too much money on it?

If the wake is large enough and you are good enough most likly, but there are a lot of other things besides power that make it easier to flip. Footholds, shorter pole, correct prop, ect ect. I can tell you the 760 WILL be an improvement over the 650, but keep in mind they are not meant for low end torque, they are for high end power which I do not think is ideal for "freestyle" riding as you describe. If you have all the parts already then its a free swap so why not? If you really want to get crazy look for a cheap 701 and swap that over, you can still get a few $ for a running 650 to offset the cost. Its your ski and you need to decide how much time and effort you want to spend along with your end goal. Also saying "I want to freeride an SJ with the ability to do flips but not spend to much money" is not that easy. As I said before guys (my dumb self included) spend thousands making their skis setup for this task. Good luck with whatever you decide and do some research, there are plenty of guys with 760s who are happy with them.....
 
Location
Ohio
Alright having owned and ridden one a lot I will churp in. I know the 760 can be made to hit hard by decking the cylinders and custom domes......but IMO.....without doing that....they suck balls!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I hated it and could not wait to get out of my ski.


Fast? Sure. Bottom hit? ZERO!

Fun in surf or chasing boat wakes? No.....not IMO.

Better than a 650 until you can put together a 61x top end? Of course! It will open your eyes real quick when you are hitting 55MPH+ (pipe and prop depending of course!) and not even stressing the motor at all!

I would do it....just know that you will missing some pop....you can deck the cylinders and cut the domes next Winter...or bolt on a 61x top end.
 

98gti

C@R H@ul3R
Location
NW FL
I say just do what you can with what you have, sure in a perfect world we could all spend 30k on a toy, but thats just not the case, even if I had a million in the bank id still have a hard time spending that kind of money on a toy. The comment about selling the junk and buying what you really want is just plain ignorant. Thats like telling someone who drives a cavalier to just sell it b/c its junk and just go buy a corvette.
 
Ok so here's what I want out of my ski. I would like to have a motor that will help me be able to barrel roll and flip off of boat wakes and maybe do flatwater rolls. I know technique is a much larger part rather than power, but hey power didn't make anyone worse at it right? So will I be able to get enough power outta this 760 to accomplish my mission without going crazy sinking too much money on it?

i knew it! like i said, forget about it.
 
Location
hhh
i would contact chuck and talk to him about that 760. i hear he can make one rip all the way through. been thinking about it for my next engine
 
I say just do what you can with what you have, sure in a perfect world we could all spend 30k on a toy, but thats just not the case, even if I had a million in the bank id still have a hard time spending that kind of money on a toy. The comment about selling the junk and buying what you really want is just plain ignorant. Thats like telling someone who drives a cavalier to just sell it b/c its junk and just go buy a corvette.

i knew what this kid wanted to do and you didnt. everybody wants to flip n roll and are in hopes that with a couple changes, what they currently ride, will do that. ignorant is to think that this kid just wanted the tiny bit more power that the 760 would give him. ignorant is to just read what somebody types. you have to read it and then actually know what they are thinking in there inexperienced mind. like the guy that bought a coffman pipe and mikuni 44 setup for a 650 and swore he was going to be backflipping it. and i'd tell the guy with the cavalier the same thing if he thought he could put some race spark plug in there and do 150mph.
 
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Put your dicks up, this pissing contest is over boys!! haha sorry, had to say it. So anyways, anyone with any actual experience with such an engine have any luck getting some low end punch out of it?
 

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Location
Rentz, GA
Yes, I have an arm ripper 62T 760. Cylinders were worked over by TLR, cases done by RIVA. I have it in a 2007 SJ with an Enhancer, Carbon B-pipe, 140 mag pump with a 13/18 swirl and the thing rips off the bottom. So much so that I actually pulled the impeller today and swapped the 14/19 back in just so my wife will ride it again. It has taperbored 38's on it right now and it would only get stronger if I upgraded the carbs and intake. It's a heavy hull but the 13/18 made it a handful...in the surf anyways. It's still not enough power for real flatwater fun but I feel the same about my SS865. It's also a $13K ski which may be a bit out of the OP's price range.

I have ridden plenty of straight 760 swaps and was never really impressed until I built mine. Meanwhile, I have been quite impressed with several 61X setups before and even had a few where I couldn't believe they were just a 701 with nothing but bolt on mods.

If you had the engine sitting around and a bit of money and a few other key components, I'd say go for it, it's definitely better than the 650 but I wouldn't pull it from a good running ski just for the hell of it. My advice would be to keep riding what you have and save up for a decent 61X setup. They come up all the time and can usually be purchased cheaper than the cost to build one.

The other point to make here is all the other parts that are required to make an engine run better. You need carbs, electronics, pipe etc, etc. Power is the sum of all your parts and your ability to tune and match them correctly.
 
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Location
dfw
Just out of curiosity how much am I looking at decking the cylinders, port job, and possibly even bored from a reputable builder?

Guys that are having trouble getting better performance from a 760 over a 61x 701 are not reducing pump load to counter the higher port timing. In order to make a 760 work fairly well, you need a good pipe and very low pitched impeller/bored nozzle. You may be able to use the stock 760 ignition but the rpm will be up against the rev limiter with no way to increase it. Milling the head will make it more responsive and widening the exhaust port will make more power. Anyway we managed to get a race ported 760 working about as well as a "freestyle" 771 with a B-pipe, hooker 9-15, 85mm nozzle, 190psi, and careful carb tuning. The 771 will turn more prop without penalty but the 760 would not tolerate any load increase.
 

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Location
Rentz, GA
Mine is race ported as well and I have run it with a stock pump and nozzle with a 9/15 and a 10/16. The 9/15 had awesome bottom but ran out too low in the rpm. the 10/16 was good in the bottom but had a bit of a drop in the midrange and then came back on at higher rpm. The 9/15 would have ben better for flatwater where the 10/16 tamed it down and made it more linear and predictable for surf.

The 140 mag offered the most noticeable improvement but the 14/19 I started with opened up the mid range drop a little too much and more top end than required so I opted for the 13/18. Now it hits so hard it's like a light switch and it goes from an idle to full contact in an instant. Going to try a 14/18 next.

The first, (and only) ride with the 13/18 and It blew my wife off the back of the ski and she swam it in because she was afraid to start it up again. I rode it on the flat for awhile and couldn't believe how hard it was hitting. I then took it out in some sloppy surf and had my ass handed to me. The ski is set up for my wife so the pole is almost full length. Had I been able to shorten the pole and get my weight over the nose some more it would have been an awesome ride.

Overall I have been very impressed with this 760 which is why I like to post up when this topic comes up. This ski has a couple other tricks done to it for improved power so maybe it's not all the cylinder but either way, it's a 62T 760 that rips.

As far as I know my cylinder has not been decked but there is a good chance it has been resleeved so the port height may have been altered that way. The exhaust ports have been widened quite a bit as well. I took a pencil tracing off the cylinder before I assembled it but I have never had it apart since to put a degree wheel on it and map out the porting.

Bottom line, there are a few guys out there that know how to make the 62T work and work well. Meanwhile, just about anyone can make a 61x rip your arms off.
 
Nice. I also just kinda like the idea of going with the "underdog" of the engines. I know thats dumb and not saying that's what I'm for sure going to do or base my decision off of that but it just kinda has a little of the cool factor and problem of trying to figure out how to do it. Maybe one of these days I'll get it figured out. haha
 

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Location
Rentz, GA
Well the 760 will certainly grow with you and respond to all the regular bolt on mods plus I am a big fan of taking your time while building both your riding and wrenching skills so that they match your power. It's easy to build more power than you can handle but it's even easier to spend a ton of money on parts before you fully understand how to match them up correctly so they compliment each other. It's the same as racing. A really good mechanic can build a really cheap car that will blow the doors off the guy who can afford all the best parts.

P.S. I have under $1200 into my TLR ported 760 so it doesn't even have to cost alot. $500 for the TLR cylinder and pistons, $200 for the head, $250 for the RIVA ported cases and another $200 for the crank. add an enhancer, B-pipe, and taper bored 38's and you have a pretty potent package for a little over $2K.
 
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