tapping the crank threads
Thread Starter
Teching In
Joined: Jan 2002
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From: Denver PA
tapping the crank threads I posted yesterday about my crank snout threads being completely stripped. After comfirming this with a larger piece of 16mm threaded rod, my only alternative to replacing the crankshaft is to have the crank tapped for a larger bolt. A machine shop pro will have at it tomorrow morning. Any chance of this working?
Thread Starter
Teching In
Joined: Jan 2002
Posts: 21
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From: Denver PA
Re: tapping the crank threads From what I've gathered over the last 24 hours, I'd still have to cut new threads for the heli-coil. Then, I'd hope the epoxy it uses held up. The only advantage would be using the stock bolt. I've found a 3/4 " replacement bolt that will work if the threads are done well.
Adkoonerstrator
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From: Deep in the seedy underworld of Koonerville
Re: tapping the crank threads I think you'll be fine. evidently the crank snout is relatively soft metal to work with. It should except new threads pretty easily.
Bigger thread = Stronger thread <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Just make sure you get the strongest bolt you can for the job. I think grade 8 is about as strong as they get.
Good luck
Johnnie
Bigger thread = Stronger thread <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Just make sure you get the strongest bolt you can for the job. I think grade 8 is about as strong as they get.
Good luck
Johnnie
Re: tapping the crank threads Grade 8 is the strongest you can get with a socket head. YOu can go stronger with the torx headed bolts. Just a little FYI. I had to do a lot of research on bolts a while back. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
How many times did you put a pulley on that car of yours? You got me paranoid here.
ERic
<small>[ March 29, 2002, 03:50 PM: Message edited by: wizkid ]</small>
How many times did you put a pulley on that car of yours? You got me paranoid here.
ERic
<small>[ March 29, 2002, 03:50 PM: Message edited by: wizkid ]</small>
Launching!
Joined: Feb 2002
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From: Crossville , Tn
Re: tapping the crank threads Not sure If the LS1 crank is much different then most other small block chevys , But I bought a 70 SS Nova a few years back and a few days after having it the balancer and pulley just fell off , Lucky for me I wasn't getting on it at the time , The guy had jb welded the damn bolt into the crank !!! Anyway to make a long story short I just drilled out and tapped the crank and got a grade 8 bolt as wizkid stated , and locktited it down and it held awsome , I ran a 150 shot through that motor day in and day out , The guy that ended up with that car put that motor in a 68 camaro and sprayed the **** out of it with now problems , So I would say you shouldn't have any problems , Just be carefull if you do it your self !!! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
