Stripped Exhaust Threads

[FBM]

I have an Alpine front mount Apex. A couple of the header bolt holes have the threads stripped. Anybody have some suggestions on repairing this?

 

[gunnerthesnowman]

I have an Alpine front mount Apex. A couple of the header bolt holes have the threads stripped. Anybody have some suggestions on repairing this?

Helicoil www.helicoil.in/ is the engine in or out of the sled ?

 

[FBM]

Engine is in. Trying to avoid removing just for this. I remember years ago using an appoxy type product on a sb chev with the same problem. The appoxy went in the hole. A releasing agent was applied to the bolt. The bolt was threaded in and left in as the appoxy hardened. Bolt was then turned out leaving threads in the hardened appoxy. I can't remember what company made the stuff. Ever heard of this?

 

[BigFish BC]

i have used loctite form a thread on small thing,but not sure how it would work on exaust bolts lots of heat.
https://www.acklandsgrainger.com/AG...balProductDetailDisplay.do?item_code=LCT28654


http://www.youtube.com/watch?v=gdsFkZMSGH4

 

[FBM]

Thanks

 

[1500psi]

Tt

A short drill bit and a 90* drill and I'm sure I could heli coil just about any holes stripped out on a apex, worst case scenario if your going to do something like what your talking about use a stud and nuts so u can let the stud setup before header install. Also you can pull the motor mount bolts and Rock the motor up a bit if its a harder to get to thread and delta box comes off easy

 

[BCBOOST]

The holes in the head are threaded deeper then you think. The stock bolts used with most front mount headers only utilize about a third of the threads. there are longer bolts available from Yamaha, or you could use a stud.
BC.

 

[partsman]

I used time serts to repair stripped manifold bolts on a nytro way better than helicoils. The motor was in the sled when repaired.

 

[Mountaintech]

I used time serts to repair stripped manifold bolts on a nytro way better than helicoils. The motor was in the sled when repaired.

X2. Much better than a HeliCoil.