I just put in a new crankshaft bolt, and it came out within 1 hour of driving. The pulley walked a bit and caused my A/C belt to start jumping a groove. The noise indicated the problem, and I got lucky with no damage.

I torqued it like this:
Use old bolt to hit 240 #
Remove old bolt, put new bolt on at 37 #
Mark the bolt and pulley with chalk, tighten new bolt for 140 degrees

I did not loctite, other than that I can't figure out why it came out so fast. It was suggested that I pin the crank, get a new bolt and put in the same way, but with loctite. Your thoughts?

 

It is a good Idea to pin at High HP level's. I would use locetite

 

Locktight for sure, and pinning would be a good idea, a known issue. get it ready for t/t at Bremerton this Friday, though.
Robert

 

Anybody know where to get a new crank bolt besides the dealer?

Also, does anybody have a crankshaft pinning kit laying around?

 

I have both

 

Whoa that is awesome, I am in Spanaway where are you located? Any chance I can drive by and pick up tonight? I will be glad to rent the pin kit from ya.

 

His company is;
Speed Secrets
Ellis Groo
Monroe
425-922-8944
speedsecretsefi.com

 

Shoot me a call you can come and get them

 

Be prepared Chris. If you've never done this before, get a SLOW drill, and some GOOD bits, and a COMFY chair. You will be there for an hour or so....at least I was.

 

My respnse is an emphatic "yes." i rolled my own; was not hard to do and wished I had done it before my supercharger spun the pulley, loosened the bolt, and made a big mess when the pulley crept forward.

it's not hard to do; just get a compact air drill with 2 speeds and you'll be fine.

 

Just for FYI, I decided to try the suggestion from another LS1Tech member named SLED. I re-torqued the old bolt (which was a new bolt) and smothered it with blue loc-tite. I know it's torque to yield, but there is a chance I did not get full yield the first time. So I marked with chalk and twisted it to nearly 5 o'clock, where I maybe went to 4 o'clock the first time. That steering rack is a PITA with turbo plumbing.

So far with 100 miles on it, I have stopped and looked under the hood 4 times along the way, and shes lookin good. woohoo

 

Sled knows his stuff.

I would still pin it my self Mine has been pinned going on nine years

 

So Chris, will we see you at the T/T out at Bremerton Friday night? There will be a couple other SH 10.xx vettes there. Come on out, it's going to be a good weather night for records.
Robert