760/701 questions, a few of them

[EightySeven550]

So here's the deal.

Just got a 760 (64x) engine. Just looking at the engine now, the coupler is a "5 finger" coupler. How do I get this to work on my superjet with a 3 finger coupler?

The exhaust is different (but I can use a stock 701 exhaust? I think)

Let me know what you guys think I need?

thanks all

 

[Boris]

unscrew the 5 finger coupler and screw on a 3 finger piece.

 

[EightySeven550]

wasnt sure if the crankshaft was the same diameter.

 

[Kennay]

if you already have one five finger, find another. They are stronger than the cast 3 fingers.

 

[marz831]

The exhaust is different (but I can use a stock 701 exhaust? I think)

You're better off with a b pipe, but yes you can run stock 701 exhaust. You will have to drill out the bolt holes in the exhaust manifold to match your cylinders. You may also have to rejet/adjust carbs to compensate for a more restrictive pipe.

 

[EightySeven550]

I will get a b-pipe when I can afford it (anyone wanna trade my JS550 for a b-pipe)

How can I get a 5 finger coupler on my short shaft
(or should I say how do i get my 3 finger off the short shaft?)

 

[orangefinger]

You will need the tool and heat !

 

[Kennay]

A vise, a cloth to go around the midshaft to keep from gouging it, and a 2x4 that needs to be turned in the standard direction to loosen; Left.

 

[Speedfreak]

A chain wrench works pretty well but will leave teeth marks on the outside if you are super worried about the looks of it.

 

[Matt_E]

You're better off with a b pipe, but yes you can run stock 701 exhaust. You will have to drill out the bolt holes in the exhaust manifold to match your cylinders. You may also have to rejet/adjust carbs to compensate for a more restrictive pipe.

While that is possible, you need to be aware that the exhaust ports do not match.

 

[infamy]

While that is possible, you need to be aware that the exhaust ports do not match.

so will a 701 b-pipe manifold fit on a 64x ?

 

[Big Kahuna]

so will a 701 b-pipe manifold fit on a 64x ?

drill the holes out or install timecerts to reduce the bolt size. also, the ext port window is slightly different,

 

[thegoldenboy]

.

 

[marz831]

While that is possible, you need to be aware that the exhaust ports do not match.

Yeah, I just figured he was looking for a quick fix until he got a b-pipe.

If you could find a b-pipe with a 62t manifold, that would be ideal.

 

[Matt_E]

so will a 701 b-pipe manifold fit on a 64x ?

Yes, but you need to either drill out the manifold or use timeserts/helicoils on the cylinder.

For the ports, you can simply match the manifold ports. I Have done that without a problem.

 

[infamy]

Yes, but you need to either drill out the manifold or use timeserts/helicoils on the cylinder.

For the ports, you can simply match the manifold ports. I Have done that without a problem.

sorry , this might be a dumb question, but what do you mean "match the manifold ports". how is that done???

 

[Matt_E]

Grind the smaller of the ports to match the larger one. While watching the wall thickness!