Crank Thread

[waxer52]

Got a garage to do some work on my rb25/30 and they have managed to destroy the thread in the end of the crank where the pulley is bolted on.

What can be done to fix it while the engine is still in the car.

Can I redrill and rethread the hole to the next size up from standard.

Also I have an rd28 engine here and I'm wondering can I use that if I have to replace the crank.

Thanks.

[jarrod83]

How badly damaged is it? i managed to damage mine one night foolishly... rang up an engineering mob and they said they could fix it no worries, they said they could retap it and see if it will hold otherwise they could tap it out slightly bigger and make a new custom bolt, I'd recommend finding a good engineering place and doing something similar

Jarrod

[waxer52]

Its totally mangled the bolt. I might try a helicoil on it and if that does not work I will have to rethread bigger and use a custom bolt.

[kopcicle]

Its totally mangled the bolt. I might try a helicoil on it and if that does not work I will have to rethread bigger and use a custom bolt.

Sry to bother but does this link make my a$$ look too big ?

Piston Bore Damage

look I realize that it was posted some time ago and my partners in crime at btk would like to apologize for not getting to it sooner . How you fell through the cracks I don't know .

If it doesn't ring a bell then ...

Nevermind and have a great day

~kop