what do you keep talkin about a sit down for?
Will 760 fit in 93 square
- Thread starter Rheeder218
- Start date
what do you keep talkin about a sit down for?
I am assuming the 760 engine is a complete drop-in from another ski. They only came in sitdowns (not counting the past couple years European special edition Rius SJ's)
nope just a motor into a 650 square nose
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
They are 10x1.25 thread pitch some place like Mcmaster carr supply might have them,but when I was looking around here I struck out.
look earlier in this post there is a URL link. THe motor is coming from another member
Gotcha.
Since it's a crate engine from Yamaha, it will have staggered compression - I think.
Additionally, unless those carbs from that seller Norcal EX used to be on that engine and tuned to that engine, you will have to rejet and do the whole tuning shebang.
Since it's a crate engine from Yamaha, it will have staggered compression - I think.
Additionally, unless those carbs from that seller Norcal EX used to be on that engine and tuned to that engine, you will have to rejet and do the whole tuning shebang.
hmm i dont think i have ever heard of staggered compression. hmm have to check that out.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
My understandig is that the pumps are loaded more on the sitdowns which causes a timing problem because of crankshaft twisting or torsion from the front to the back cylinder,that is the reason for the staggered jetting and difference in compression.On a standup it is a nonissue
OK getting really really Fing pissed about puttin this 760 in square sj. First off the carbs, intake and all that does not fit at all, have to find new or used or w/e for that now. Then i try putting the exhuast together and the damn exhaust mount isnt right at all either! Am i going to have to get a new exhuast as well? What happen to this being a drop in motor with jsut mods to the exhuast manifold bolt hole? WTF
- Location
- Mooresville, NC
What exhaust setup are you going to run?
the stock one from the original 650.
- Location
- Mooresville, NC
The 760 used a different exhaust design; I guess it is usually a non-issue around here because 95% of the setups are using a B pipe. Maybe somebody has run this setup?
- Location
- mobile alabama
1st you need aftermarket exhaust!
2nd you need a goo set of duel carbs
3rd you need to find the local standup racer/freestyler/guro and ask him to tune your carbs
4th be paid up on insurance the 760 will rip your arms off
2nd you need a goo set of duel carbs
3rd you need to find the local standup racer/freestyler/guro and ask him to tune your carbs
4th be paid up on insurance the 760 will rip your arms off
The 760 is indeed a drop-in motor for the Superjet. But it should be understood the swap is for the LONGBLOCK. You cannot drop a 760 in and expect your accessories to bolt up.
I just looked through this thread. People told you the exhaust manifold would not fit. (2nd post in this thread!)
You were asking if the carbs needed to be tuned. That seemed to imply the carbs came with the motor. You never mentioned anything about reusing your parts.
Sorry bud...you'll get it figured out though.
I just looked through this thread. People told you the exhaust manifold would not fit. (2nd post in this thread!)
You were asking if the carbs needed to be tuned. That seemed to imply the carbs came with the motor. You never mentioned anything about reusing your parts.
Sorry bud...you'll get it figured out though.
Last edited:
norcal ex
X-H2
- Location
- San Jose, CA
Im the one who sold him the engine. I feel bad for hte misunderstanding, but i can see that i am not the only one confused about what was going on...
ok look at the rest of the posts they say jsut drill out the holes on the manifold and it bolts right up. that every thing is pretty much jsut drop in. If i get a 62t manifold will it bolt up to the rest of the exhuast system?
demolition_x
Not After Fame & Fortune
- Location
- Holden Beach / Wilmington NC
just get a b pipe, you won't regret it.
stock pipe is the worst design ever, its a rectangular box.
your just gonna want it down the road so why go through all the trouble of switching it later?
stock pipe is the worst design ever, its a rectangular box.
your just gonna want it down the road so why go through all the trouble of switching it later?
man this was just suppose to be a eaxy drop in motor for my buddies boat and its jsut keep getting deeper and deeper. im guessin the B pipe would be like 300ish right? and im pretty sure he doenst want to put that much more in to this boat. So im guessin that i am going to have to help him find a exhaust manifold and exahust bracket. Is there anything else that we need to finish this thing?