scottie mac
X-
The SJ from 94 on up has used 61x cylinders. It never came with 62T cylinders. The 96 and above SJ motors are all 62t case/61x cylinder blocks.
Scottie
Scottie
61x 62t 64u engine codes
- Thread starter ItsRixter
- Start date
ItsRixter
SoCal Wav Jumping shiznit
- Location
- Sunny Diego
62t cylinders came on couch 701's and had different porting
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- Location
- Washington, PA
So this thread went off on a 61x and 62t discussion. I am trying to get some info on the 64u. What displacement is it? I know some one said its a 62t case that takes a 760 sleve so is it actually a 760? Thats what I am thinking I am just not sure. I am looking at a blaster that has one in it and trying to decide if I should buy it or not. How well does this work in a blaster?
OCD Solutions
Original, Clean and Dependable Solutions
- Location
- Rentz, GA
The only difference in the cases I am aware of is that the 64u cases have a second pulse line.
The 64U may be clearanced to accept 760 jugs as well but I am not 100% on that either. I had a set of 62T jugs that needed to be bored out to clearance my 62T 760 top end.
The 64U may be clearanced to accept 760 jugs as well but I am not 100% on that either. I had a set of 62T jugs that needed to be bored out to clearance my 62T 760 top end.
- Location
- Washington, PA
I think I will just stay away from it. I don't know why its in there or whats going on but If I'm going to do something like that I'd rather do it myself and know what I have.
- Location
- Washington, PA
I am back to this issue agian and never got it resolved the first time. With more research it appears all that matters is whats stamped into the cases. What does the tag above the starter cover represent then. It is a printed tag that reads 64u on a 96 Blaster I am looking at. Why would it have that if it is a 62t case though?
VXSXH20
Sionis Industries
- Location
- Mid-Atlantic
revived an old thread but after searching, figured I'd post here..I have come across 2 engines that I cannot figure out what the came in or what the base model was...
*I have a 62E = but it has a "61x" on the OEM yamaha single carb intake manifold and the cases have the flat top intake (not angled) just like the 61x? how could it be label a 62 if the bottom cases are the same as a 61x? -the level flat single intake?
*Also have 61L = i think iwas in a old couch like a raider or vxr or something like that is where it came from- also a OEM single carb. is that the same as a 61x?
-Please Advise. Thanks- JW
*I have a 62E = but it has a "61x" on the OEM yamaha single carb intake manifold and the cases have the flat top intake (not angled) just like the 61x? how could it be label a 62 if the bottom cases are the same as a 61x? -the level flat single intake?
*Also have 61L = i think iwas in a old couch like a raider or vxr or something like that is where it came from- also a OEM single carb. is that the same as a 61x?
-Please Advise. Thanks- JW
- Location
- Lake Havasu City, AZ USA
Im pretty sure the 62L is the 650(6m6) engine, and the 62E is a 61X base engine. Those codes are for the different models, they just use 6M6 and 61X engines.
Someone correct me if Im wrong...
Someone correct me if Im wrong...
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- Location
- Nashville, TN
A Little Help?
I bought a SJ650 for 200$ and am in the process of rebuilding it for next season. I am learning as I go but need advice as to what waverunner you would suggest for my donor ski. The engine in this sj is locked up and I have gutted the entire hull. I have lots of good parts I can reuse but would like to buy a whole new freshwater ski to cannibalize. This one was registered in NC and was ate up by the salt water.
I was looking over your engine codes and am leaning towards using a 701 engine from what I have been reading. I noticed that there is a 700 and 701 engine code. Can you tell me if this matters and will I be able to convert the whole lower unit over as well as all electrical components? I read what the guy wrote about his experience with doing that and said it came off without a hitch. What would be the best waverunner for me to be shopping for for this undertaking? Thanks
I bought a SJ650 for 200$ and am in the process of rebuilding it for next season. I am learning as I go but need advice as to what waverunner you would suggest for my donor ski. The engine in this sj is locked up and I have gutted the entire hull. I have lots of good parts I can reuse but would like to buy a whole new freshwater ski to cannibalize. This one was registered in NC and was ate up by the salt water.
I was looking over your engine codes and am leaning towards using a 701 engine from what I have been reading. I noticed that there is a 700 and 701 engine code. Can you tell me if this matters and will I be able to convert the whole lower unit over as well as all electrical components? I read what the guy wrote about his experience with doing that and said it came off without a hitch. What would be the best waverunner for me to be shopping for for this undertaking? Thanks
- Location
- mississippi
bump useful info
61 x cases mostly came in 701 yamaha ,superjet uses the the 62t cases ,it was a dual carb setup from the factory for more low end hit,out of the hole , best used for surf riders,but didnt have as much in the top end . Most yamaha surf riders prefer the 62t case with the 61x cylinder and dual 38 mm dual carb setup,but some also prefer the 62t 760 cylinders,mounted on the 62t cases with the dual 44 mm carb setup.most of the parts are the same but not all,the 760 engines were installed in skis with digital gauges for speedo,and fuel, etc.. and the 760 electrical is different then the 701 ,the moduals ,or computer . stator s were bigger...dont know the exact specs...but you get the point , I am currently looking into the differance between the 62T 701 cylinders and the 62T 760 cylinders ,look into different porting?? were they just bored bigger? Or were they different sleeves?Remember the ebox is different in the 760! I have a true Yamaha 760 with 64Y on the tag ,it has a 62 T case with 62T cylinder with a 64x head . I removed it from a stock 1996 Yamaha Waveblaster 2 . It is now in my WB1
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ItsRixter
SoCal Wav Jumping shiznit
- Location
- Sunny Diego
Roscoe your statement "Superjet also used the 62t cylinders and 62t head" is incorrect. All Superjets (at least from 1994 to today) use 61x cylinders. From 1996 on they use 64U heads. This was already stated previously in this thread.
- Location
- Abu Dhabi, United Arab Emirates
Bumpity bump
- Location
- ne.pa
roscoe some of what he said is right but alot is wrong. all sj up to 96 were all 61x same as waveblaster 1 in 96 they went to 62t bottom 61x cyl.
and mostly everything is cross compatible with yamaha gear from the 650 to the 760 they all run the 6m6 crankso timing should be all the same for all motors the only real difference is the positioning of the electrics and water lines if you change the stator from a 62t to a 61x i would also recomend changing the cdi as well
- Location
- Jensen Beach, Fl
I run a 61X case with 62T cylinder ( 760 ) with a 64X head... The ski rips, but, it needs just a little more on bottom end... Runs smooth from bottom to top... Running an MSD enhancer, Factory Pipe, Mikuni SBN 44, Milled stock head, Boyessen Reeds... Solas repitched prop from Group K 13 / 17... Any recommendations for that extra bottom hit ???
Vumad
Super Hero, with a cape!
- Location
- St. Pete, FL
A question about donor skis...
61x/62t is rarely available. Most donor skis are going to be couches with 62t/62t, 61x/61x or 760 models. (does anything other than WB1 and SJ come 61x/62t?)
My question is, that if I want a 61x/62t, what would be my best option?
A complete 760 (that comes with dual 44 carbs), swap to a 61x cylinder, drop in.
Or a complete 62t/62t (that comes with 38mm carbs), swap to a 61x cylinder, drop in.
It would seem to me that if swapping cylinders is necessary, it would make sense to start with the 760 due to the 44mm carbs, which would be better suited for a B-pipe, head, etc. However, I'm not sure of the subtle difference in electronics or other components between the two, if any.
61x/62t is rarely available. Most donor skis are going to be couches with 62t/62t, 61x/61x or 760 models. (does anything other than WB1 and SJ come 61x/62t?)
My question is, that if I want a 61x/62t, what would be my best option?
A complete 760 (that comes with dual 44 carbs), swap to a 61x cylinder, drop in.
Or a complete 62t/62t (that comes with 38mm carbs), swap to a 61x cylinder, drop in.
It would seem to me that if swapping cylinders is necessary, it would make sense to start with the 760 due to the 44mm carbs, which would be better suited for a B-pipe, head, etc. However, I'm not sure of the subtle difference in electronics or other components between the two, if any.
The 62t case, 61x cylinder 701 dual 38s
The 62t case 62t cylinder 760 dual 44s
The 62t cylinder has bigger exhaust manifold bolt holes then a 61x,so if using a 701 61x exhaust manifold or a stock 701 Factory b pipe exhaust manifold, holes will need to be drilled bigger ,in manifold, also port matching on exhaust manifold, the exhaust ports on a 62t cylinder is bigger then a 61x even if they are both 701 s ,this will need to be done if you are using a 701 61x manifold on a 62t cylinder . the 62t cylinder has the extra 2 exhaust mounting holes ,in the top ,of the cylinder for all the big rear facing stock exhausts yamaha uses. I put my 701 61x in my WB2 and using stock raider 701 exhaust that exits the rear. I'm lacking the 2 exhaust supporting bolt holes that are in the 62t cylinders ,after putting 701 61x engine with single 44 carb and 701 ebox ,in WB2, kinda turns WB2 ,into a waverunner III IMO . Stock 155 Pump is to big for 701 and I'm not going to get into a repitched prop .Hope this helps someone out!
The 62t case 62t cylinder 760 dual 44s
The 62t cylinder has bigger exhaust manifold bolt holes then a 61x,so if using a 701 61x exhaust manifold or a stock 701 Factory b pipe exhaust manifold, holes will need to be drilled bigger ,in manifold, also port matching on exhaust manifold, the exhaust ports on a 62t cylinder is bigger then a 61x even if they are both 701 s ,this will need to be done if you are using a 701 61x manifold on a 62t cylinder . the 62t cylinder has the extra 2 exhaust mounting holes ,in the top ,of the cylinder for all the big rear facing stock exhausts yamaha uses. I put my 701 61x in my WB2 and using stock raider 701 exhaust that exits the rear. I'm lacking the 2 exhaust supporting bolt holes that are in the 62t cylinders ,after putting 701 61x engine with single 44 carb and 701 ebox ,in WB2, kinda turns WB2 ,into a waverunner III IMO . Stock 155 Pump is to big for 701 and I'm not going to get into a repitched prop .Hope this helps someone out!
- Location
- Mccall idaho
Will a full Coffman dry exhaust from a 94 wave blaster fit my 94 super jet?