crank issue, thread damaged
#1
crank issue, thread damaged
No idea how it happened (probably transportation) but i have a bent bolt in my crank, me and a friend managed to get it out hoping it was just the bolt that was damaged. Some if the threads are damaged hoping to re tap it on the same thread.
Having some trouble working out the pitch so if anyone has that on the top of their head would be helpful
Also any other options other then replacing the crank. Just rebuilt the engine then spotted this..such a set back for me right now arrgh
Having some trouble working out the pitch so if anyone has that on the top of their head would be helpful
Also any other options other then replacing the crank. Just rebuilt the engine then spotted this..such a set back for me right now arrgh
#4
Re: crank issue, thread damaged
it will depend on how bad and how much the thread are damage, you carry one of the good bolt your using just to match the thread. if the thread whole is rally bad just replace the fly wheel and bolt
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#6
Re: crank issue, thread damaged
Yeah theres no issue with the fly wheel.
Its not too bad, the first few threads have been effected.
Im just looking for a list of options. Other then the crank. Comes to that the car can stay off the road while i save for forged stuff.
First one is tapping the same thread in. Then hope. The thread isnt to mangled so it could work.
Or going for a larger pitch.
Another idea i had is to remove any loose bits. Taper the bolts slightly at the end and see if the thread can match up to the good threads further down
Its not too bad, the first few threads have been effected.
Im just looking for a list of options. Other then the crank. Comes to that the car can stay off the road while i save for forged stuff.
First one is tapping the same thread in. Then hope. The thread isnt to mangled so it could work.
Or going for a larger pitch.
Another idea i had is to remove any loose bits. Taper the bolts slightly at the end and see if the thread can match up to the good threads further down
#7
crank issue, thread damaged
If its only the first few but is clean further in you might be OK chasing the threads back to the same pitch. Just be careful and I'm sure using something like wd40 to lubricate the tap would help. But wait for more expert opinions before you do as I've never had an issue like yours
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#8
GDD Lonely Krew
Re: crank issue, thread damaged
Its not recommended but MANY people have run with more than one bolt missing out of their flywheel. Not saying you should do this just saying. If its only the first few threads, chase with tap, and try the bolt, if it torques fine then you're ok, or you could try to find a slightly longer bolt. Pictures would help a ton as everyones perceptions and estimations are different..
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