Ok I'm in the middle of a cam swap. Today I pulled the Harmonic balancer off. So I take the old cam out put the new one in, also I'm installing a true roller timing chain. So I pull off the old crank sprocket and go to install the new one when I find the bolt hole in the crank is damaged!! I mean the bolt wouldnt even start. Does anyone have any addvice about taping the hole out? Or is there anyother way? I hate to beg but I got this far with inciden, help me please.

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87 Z28 305 TPI, Auto, 2.73, Gutted air boxes, K & N fillters, SLP Airfoil, Dyno Max 3" cat back, Accel 8.8 mm spirals, Accel cap and rotor, Accel coil, rapid fires, and 170* Stat.
Best 15.414 @ 87.47.

 

i'm guessing you've never tapped a hole? you shouldn't have to really cut new threads, just clean up the ones you have. i'll guess you didn't use anything to protect the threads when you had a puller on the damper. buy a thread chasing tap instead of thread cutting. use something like wd-40 or tap oil. make sure you start out square and don't get the hole or threads crocked. good luck

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ICON Motorsports

1st & 3rd

 

Had the same thing happen to me. Had to start a tap and then was able to thread in the bolt. Freaked me out for a second too, but all is well

 

Try actually stripping the snout Out, thats Fun




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60 Ranchero - Project ( Money Hole )
85 Sport Coupe LG4 - Daily Driver

Livin' the Stereotype