Stock Exhaust Gaskets w/Headers?

[Ricks70Duster340]

I bought a set of remflex gaskets to use for reattaching my headers after my rebuild. As I was putting them on the header shifted and the gasket slid down and bent... ruining them (yeah, both sides). Very frustrating waste of money.

I do have a set of stock manifold gaskets and am wondering if I could use those or if I need to buy a different type of header gasket?

 

[Kendog 170]

I would think so as long as the porting lines up. Probably won't last long.

 

[mygasser]

smear a little silicon sealer each side of the gaskets and they (almost certainly) won't blow. they don't come loose either as the silicon squeezes around the bolt threads holding them in place. being doing this for years on headers and not had any leak/loosen yet.
neil.

 

[Plymouth 65]

Stock manifold gaskets will not last long. Get some header gaskets and be done with it. 65

 

[AJ/FormS]

My experience is the same as responders 2>4;
stock or cheap gaskets without silicone will not last. I have had some success with hi-temp RTV/silicon yes, but clean up is a pita

I install studs into the end holes of the header flanges of the heads,
then notch my gaskets to fit.
This lets me hang the headers, start the nuts, then drop the high-quality gaskets in last, without sealers..
Easy-peasy.

And yes, I try to use the slanty round, manifold, cup-washers here as well, they just never come loose.

 

[Inertia]

If your headers are Doug's or TTI, the flanges are pretty fair/true, and seal on regular header gaskets very well.
I've always used the header gasket supplied, or Mr. Gaskets with great success, if the flanges are true.
Never needed " Remflex" .