SOLD Yamaha 781 engine

[Yami-Rider]

Sold

Selling a 781 flat top engine I got with a SJ I bought. Dont know the history on it or who built it. Will need rebuilt

The good
Cases are epoxy/ported/fly cut for big bore sleeves
Case threads are all good
Cylinder has big bore sleeves
Cylinder is fully ported/transfers/exhaust
R&D 85.5 pistons

The bad
Cylinder has 5 helicoil head bolts
3 Exhaust bolts holes will need to be time-certed
Crank rotates smoothly, but one of the small end connecting rod surfaces is rough, so crank will need rebuilt.

$350 shipped

 

[tobyfred]

How much

Sent from my SM-G955U using Tapatalk

 

[Yami-Rider]

 

[Yami-Rider]

Purple holes need time certs, red hole has a bolt broke off 1/2" down in the hole



Top of cylinder was deck 4mm to work with flattop pistons only, will need to run flat top domes, ADA still makes them.

 

[Yami-Rider]

How much

350 shipped

 

[MTRHEAD]

Pm