Hello I did a little research but still unsure. The engine is a complete stock 97 760 and will stay pump gas stockish. Either cylinder I use would get a bore, port work and new pistons. Now remember this will have the stock head, 44 carbs and a b pipe. Do I send the 61x or the 760 cyl. to a machine shop. This will be a spare to cover any down time for the summer incase I brake the lamey again. Thanks for any insight lpw says sell and find another lamey lol.
Which to build 760 or 61x cyl.
- Thread starter XFT LOU
- Start date
Mouthfulloflake
ISJWTA member #2
- Location
- NW Arkansas
im piecing a gp760 engine together right now too
I figure if it sucks, Ill sell the oem44 carbs and run 38s, and a ported 61x cylinder.
build the 760 I say... why not?
I figure if it sucks, Ill sell the oem44 carbs and run 38s, and a ported 61x cylinder.
build the 760 I say... why not?
crammit442
makin' legs
- Location
- here
A well done 760 cylinder will spank on an average 61x, but all things equal the 61x would be a better starting place for what you do. A LOT more money to make it the same displacement, though. You really should get a girdled head if you're gonna spend the money to port(on either cylinder). Cylinders really do crack. You could always just keep a set of domes to run with the head shell from the Lamey because you won't be needing it for the Lamey if it's blown up.
Mouthfulloflake
ISJWTA member #2
- Location
- NW Arkansas
Hey Charles..
can you more specifically define 'well done' for me?
I plan to widen exhaust port, clean up the transfer casting flash and mismatch.
Girdled ADA, increased compression, MAYBE some static timing advance, MSD enhancer, dual OEM 44s... B pipe..
what else? or what different?
its an experiment for me, but one that I would like to work well!
Thanks!
can you more specifically define 'well done' for me?
I plan to widen exhaust port, clean up the transfer casting flash and mismatch.
Girdled ADA, increased compression, MAYBE some static timing advance, MSD enhancer, dual OEM 44s... B pipe..
what else? or what different?
its an experiment for me, but one that I would like to work well!
Thanks!
Kennay
Squarenose for the _____
- Location
- Myrtle Beach, SC
Keep in mind that with the 760 electronics, you can't run an msd enhancer, and also the stock digital ignition decreases timing to the rear cylinder. Also, you will need to get the squish band on the front cylinder deepened so you can have the head milled for more compression. The rear cylinder's dome comes from yamaha with more squish to slightly lower compression ~10lbs. I recently found this out after buying a 760. Luckily I will be running an aftermarket girdled head, and I have 61x electronics.
Mouthfulloflake
ISJWTA member #2
- Location
- NW Arkansas
I sold of the 64x stuff, and plan to run 61x stator, flywheel and E box.
( including an MSD enhancer)
Ive got all the stuff ready to bolt together, im asking for advice on the setup, tuning, compression, timing
( including an MSD enhancer)
Ive got all the stuff ready to bolt together, im asking for advice on the setup, tuning, compression, timing
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crammit442
makin' legs
- Location
- here
I just mean that a well setup ported 760 can run as good or better than just an average "freestyle" ported 61x. That's all. Nothing secret. Just really dialed in with a good prop/nozzle/pipe/compression/porting/ignition package. I think the complete package is really what makes all the difference.
Mouthfulloflake
ISJWTA member #2
- Location
- NW Arkansas
gotcha.
Kennay
Squarenose for the _____
- Location
- Myrtle Beach, SC
I know.
I wasn't refering to your situation. I should have quoted the guy. It took me a few minutes to finish posting my comment.Kennay
Squarenose for the _____
- Location
- Myrtle Beach, SC
Although now that I think about it, the squish band is so tight, you would probably have to get both of them recut anyway to get the head milled.
GIL
Power In The Hands Of Few
- Location
- Cullman AL
There is ONLY 1 correct answer to your dilema---
LPW701!!!!!!!!!!!!!!!!!!
it's cheap as hell, reliable as hell, and more fun than a barrell of naked women!
(and u already know LPW real well)!
LPW701!!!!!!!!!!!!!!!!!!
it's cheap as hell, reliable as hell, and more fun than a barrell of naked women!
(and u already know LPW real well)!
Mouthfulloflake
ISJWTA member #2
- Location
- NW Arkansas
I am following you now Kennay.
but im betting Lou plans to use the same ignition from his Lamey on his backup engine if it comes to that.
and also, as Crammit suggested, It would make sense to use the head there too.
but im betting Lou plans to use the same ignition from his Lamey on his backup engine if it comes to that.
and also, as Crammit suggested, It would make sense to use the head there too.
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Kennay
Squarenose for the _____
- Location
- Myrtle Beach, SC
Milling the head dude.
And for the record, you didn't start this post. :bananapowerslide: I am talking to the original poster.
Kennay
Squarenose for the _____
- Location
- Myrtle Beach, SC
AH! LOL man, we probably need to just go to bed. It's getting too confusing around here.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
I am sorry but it is not more fun than a barrell full of naked women unless they are fat women then maybe you are right.:Banane09:
Mouthfulloflake
ISJWTA member #2
- Location
- NW Arkansas
My tired old ass could keep up if you would quote who you are responding too!
AH! LOL man, we probably need to just go to bed. It's getting too confusing around here.
Kennay
Squarenose for the _____
- Location
- Myrtle Beach, SC
Ah. I just saw where he said "Complete 760" so I figured he was using all the stock stuff. I hope I see you sometime after our ski's are done so we can switch ski's to compare 760's. I think I am going to leave mine stock ported for a bit. I am going with the dual 46mm carbs chuck has suggested as well. It will be nice to see how the combos compare. Are you doing any case work?
Kennay
Squarenose for the _____
- Location
- Myrtle Beach, SC
NevAr! Makes it too simple :loser:
Mouthfulloflake
ISJWTA member #2
- Location
- NW Arkansas
the only way you would get fat girls in a barrel is with a chipper shredder, and am pretty sure that lou already has a thread started on that in another section.
- Location
- So. IL
Lou needs to correct me if I am wrong but he wants a complete drop in.
I would just bolt it in as it is and let her eat. Don't spend any money. I don't think you can go from a high horsepower motor to a very mild motor and have any fun anyhow. So it would just be a pacifier until your lamey comes back from the shop anyhow. Just something to get you on the water for a few weeks. Just my $.02
And fat girls will slide into about anything with enough baby oil.... WOW that was some good times.. Umm O wait .. nevermind
I would just bolt it in as it is and let her eat. Don't spend any money. I don't think you can go from a high horsepower motor to a very mild motor and have any fun anyhow. So it would just be a pacifier until your lamey comes back from the shop anyhow. Just something to get you on the water for a few weeks. Just my $.02
And fat girls will slide into about anything with enough baby oil.... WOW that was some good times.. Umm O wait .. nevermind
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