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Threaded holes in t-case mount

Posted: Tue May 02, 2006 6:55 pm
by markil
Last trip I did I lost the 4 bolts that hold the arm on the passenger side of the t-case to the case. The thread on the casing got stripped and I need to tap in a new thread now.

I have both t-case arms braced heavily including a ring and bigger rubber mounts with bolts throught them. So the thread on these bolts that goes into the cast alloy casing was the next weakest point I guess. I'm guessing that these bolts probly got loose before getting stripped too :roll:

My question is what's the best way to go about doing this? Should I just get the next size bolts with the same thread or use a corser or finer thread? I think the finer thread is more likely to strip again but a corser thread is more likely to vibrate loose, but I don't know for sure.

What does everyone else think?

Posted: Tue May 02, 2006 6:59 pm
by OVERKILL ENG
The best way is to helicoil them.
The helicoil is a steal thread that reolaces the original thread .we use a thread lock solution (form of locktight)to hold the helicoil into the case the the bolt screws into the helicoil a lot stronger than factory.
SAM

Posted: Tue May 02, 2006 8:25 pm
by Red_Zook
Yep helly coil
OR at work we sell a locking power coil by bordo
havvent sold any yet...BUT basiacly half way down the thread there is a ring of thread that streches out further and works like a spring... they recon keeps bolts tight.. mite be worth a try!
Philby

Posted: Tue May 02, 2006 8:26 pm
by lay80n
Have stripped the bolts on my T-case too. Drilled - tapped and helicoiled, all good now. Though about fitting studs, but didn't bother with it.
Layto....