LT Malice

iTrader: (3)

I am constantly springing exhaust leaks in my turbo v6. 95% of the time they are from my header flanges. The flanges seem to be very slightly warped. I'm gonna get them machined so they are straight again.

What are some tricks that you all use to seal up your exhaust. My car has literally NEVER been without at least one leak.

Loctite on the header bolts?
double up your header gaskets?
Spray copper spray on the header gaskets? (I was told to do this for MLS head gaskets, so I thought about giving it a try on the headers too)

spray water or some other coolant on the headers after each pass at the strip?

EDIT: here are some pics if they'll help.
http://www.cardomain.com/ride/600086/3

Dragframe

iTrader: (14)

i think if you sprayed anything real cool on the headers after a run you would make the headers brittle (that is what happens when you drop a weld into water after you just got done with it...) and they would probly warp when you sprayed the water on them because of cooling them so quickly....

but im not positive...

LT Malice

iTrader: (3)

you're prolly right. That might cause them to warp more. I was hastily brainstorming a way to get them cool/sealed.

Tiago

iTrader: (27)

if you're not already, I recommend using hte stock GM multi-layer-steel header gaskets...

they are the only ones that don't leak in my experience.

qqwqeqwrqwqtq

1/2in thick flanges. Then you don't even need gaskets.

Fullthrottledan1

did you make headers for it? the first time i welded up headers for my truck i didnt attach them to a head or a table when i welded them so one of them warped a little. i know what you mean i HATE exhaust leaks, sounds like ***. I put a thin coating of RTV on there and let it dry first, so it formed a seal, then put the gasket on, and bolted the header.

LT Malice

iTrader: (3)

I'll give those a try. I have the $45 Abbott racing gaskets from FTV6 on the car right now. They don't port match very well and both sets I've had have leaked.

I have 3/8" flanges. I had the headers custom fabricated(I'm not competent enough to make them myself ), and I told them I wanted 1/2" flanges, but I only got 3/8s. I'm hesitant to have them machined. but I want them to be straight again.

67Firebird455

iTrader: (27)

I'm a fan of the GM mls gaskets. I had no leaking problem whatsoever with my LT's using those gaskets, until I installed the turbo and the backpressure shot way the hell up.