turbo manifold bolts

[mk3concepts]

alright..so my car was just in the shop to put on a new manifold..to hopefully get rid of the exhuast leak..when i got the car back..the leak noise was still there..but not as loud as b4..so i check if there is any loose bolts..i find 1 loose bolt..so i decide to tighten it..as im tightening it..it doesnt seem like its getting any tighter..it just keeps twisting?? do i need a new stud on there????

 

[mk3concepts]

oo..also while im tightening the bolt..it seems the stud is turning with it..i forgot to put that in

 

[TurboWarrior]

When that starts happening replace all the nuts and studs new from toyota. The ones that spin after have to be helicoiled. Torque exactly to toyota spec to minimize the chance of stripping any more from overtorquing. Its the aluminum head that causes this. The threads get weak and pull out. This is caused too by the fact that the studs are a much stronger material then the threads so they can easily destroy them.

 

[mk3concepts]

so is the hole where the stud goes into bad now??? or i just need to get new studs and bolts???

 

[TurboWarrior]

If its spinning the threads are at the very least damaged in that hole. So yes it is bad. It needs to be heli coiled. There are kits out there. You clean out the hole of old threads, spin in the coil with a tool and that gives you a new thread.

New studs may torque down in the same hole but the thread is still damaged. It could come loose at some point. Proper way is to helicoil. And visually inspect the other holes for obvious damage.

 

[thedave925]

Dude, visit driftmotion.com (Bigaaron) and purchase the 7/16" stud kit, the tap, and the rightangle drive adapter. It'll be the best bang for the buck!

 

[Poodles]

I concur ^^

my head was annealed to the point that the stock size helicoils pulled out, had to upgrade...

 

[mk3concepts]

so that kit on driftmotion is the right size??? for the stud holes ??