Reusable bolts?

[cwest32]

I am rebuilding my 2011 LML Duramax and I am receiving mixed information about which bolts are reusable. I know the connecting rod bolts are not supposed to be reused what else? Thanks

 

[rcr1978]

Head, mains, flywheel, converter, cam, crank ect. You can probably be fine with the damper and cam bolts if they are keyed. I would even to do injector hold down and rocker shafts just to save some possible headaches.

 

[Hambone]

X2

 

[torqued2dmax]

Head, mains, flywheel, converter, cam, crank ect. You can probably be fine with the damper and cam bolts if they are keyed. I would even to do injector hold down and rocker shafts just to save some possible headaches.

But I heard of a guy who told another guy that he new of a person that reused any bolts without any problems ! If it was you or someone very competent that you know, that last torqued the non TTY bolts , you might get away with reusing them if you must ! Good list of recommended bolts to change by the way !

 

[MAXX IT OUT]

To tell you guys the truth, other than the fact I have head studs and main studs, I reused everything else and it has made it 40k since then. No sure I would recommenced it as the way to go, but in a tight spot it worked.

 

[Chevy1925]

Guy did a bunch of testing and even posted in here how many times you can cycle the “tty” bolts the engine uses. I’ll see if I can find it. The only TTY ones I reuse are the flywheel and balancer bolt unless specified otherwise.

 

[TheBac]

This thread definitely belongs in Engine Building. Good info to have in general.


I guiltily admit I reused my rod bolts on my build....but 9 years, 60,000 miles and pushing 575hp for a while they seem to be holding fine.