a bolt on my hotside to the manifold broke. would this cause a loss of performance. I was thinking about drilling it out and putting a bigger bolt through so it could seal again. Let me know what you think

 

watever it takes to fix it, gotta do it

 

Yup, with all that heat the mating surfaces could warp. Drill and re-tap for a bigger bolt or drill it and put in a heli-coil.

 

do you think im losing some power

 

Recant, Actually, no. The leak is after the turbo so you wouldn't see a power loss. If the leak was bad, you would probably hear it. It might not be, but I would fix it anyways.

 

If you think about what he said, that it was a bolt or stud that fastens the hotside to the exhaust manifold, it would actually be pre-turbine. If it were a fastener securing the O2 housing to the hotside...that would be after the turbo.

 

If that dosen't work I have one I could sell for 25.00.

 

Isn´t the turbo secured to the exhaust manifold via two bolts and two studs? Was it one of the studs that broke off? If it´s a stud, won´t you have to drill it and use an Easy-Out? It´s best to replace the studs with through bolts. Whatever you do, apply high-temp anti-sieze compound to the threads when you reassemle it.I don´t know, but I think that you´re gonna have to remove the hotside to do the job, aren´t you?

 

****, I had to reread that. Sorry. Yes you will lose power. Drill it out and use a heli-coil. I did that on my old eclipse, worked like a charm.

 

yes it was one of the studs. Its the one on the left front. I dont think ill have to remove the hotside but well see. also whats a helicoil. Thanks for all the reply

 

A heli coil looks like a spring that gets put in the hole after you drill it the correct size. Then the bolt threads right into it. Any car parts stor should have them and get the kit if you can. It will come with instructions.

 

ok ill look into thanks for the help hopefully this is whats holding my trap speeds down.

 

If there is indeed a leak where you describe it, then it'll cause huge knock counts. An exhaust leak before the turbo plays havoc on your AFR's and can cause huge detonation. Don't race or even boost until you get it fixed.

 

ive been driving on it for a little while. Hopefully i didnt break anything. Im going to drill all thew way and put a bolt and nut on it.

 

Once you drill it out, you may wanna spray liquid wrench on the other three fasteners, loosen them all, and retorque everything evenly following the correct sequence and torque specs. Don't forget to apply high-temp antisieze on all the threads.