my flywheel came off and stripped the enterance to the holes in the crankshaft how can i rethread it? what is the best way?

 

good luck...

the best way would be to replace the engine....

but if you can find someone to drill and tap those holes larger then you may be in luck but there is a greater chance of ****ing it up. the crank is very hard to drill and tap especially inside the car.

put another engine in...it would be easier.

 

you can replace the crank. cheaper then the whole engine.

 

Ya def dont get complete engine just find a new crank, there not to expensive used, but make sure all the measurements are in spec.

 

new crank. possibly helicoil?

 

not necessarily true...

You dont even know what kind of motor it is. If he has something like an old D15 or D16, then buying a new motor would be much cheaper than replacing the crankshaft.

Cant just buy a crank and throw it in. It might need to be machined and you must replace the rod and main bearings.

If its a motor that costs more than $750 to replace, then i say fix it, but if you can find a new short block cheaper than $750, then replace the whole thing.

Another option, just tap the threads a size larger than original and use a slightly bigger bolt. Should have enough room for a size up from OEM. Worst case, youll have to bring the flywheel to a machinest to drill the holes slightly bigger. Could do it yourself, but if you drill them crooked, could risk throwing it off balance.

 

http://www.helicoil.in/helicoil.htm 94

 

would you really trust a helocoil in the crank? if you do you are clearly a moron.

 

as a matter of fact i would . Ive seen helicoils used almost everywhere. and theyre sometimes stringer then the orginal threads depending on material.

 

I have used helicoils on head blots for a Harley 101cuin drag bike, so yes I would trust them, and it's helicoil not helocoil, "moron". 94

 

fmc knows his ****, helped me out more than a few times with questions and problems ive had

 

finally someone else that realizes Keen-serts / timeserts /helicoil's are very very strong. in many case stronger then the orginal threads.

OP if you arent comfrotable using a helicoli yourself, take it to a machine shop and they could do it for you for probably cheaper then what you could get a new crank for.

 

Question I have is how the f#@k did you strip all 8 crank bolt threads and have your flywheel come off? Is this something that might happen again or was it installer error and the treads were all stripped?

If it is all 8 threads I would remove the crank and take it to a machine shop and see what they say. Find out what they think, if it can be repaired and for how much. Take that price and put it against the cost of a replacement engine (+ labour) then go from there!

 

i got it fixed already, the idiot who had the car before me didn't torque the bolts down right. i just used some old bolts and rethreaded the holes

 

thread inserts are incredibly strong, we use them in a number of the milling machines and lathes at work that had gotten stripped out by shitty setup guys. never an issue I would trust them in the crank for up to half of the holes but i see you already got this straightened out anyways.