Header pipe to head fitment

The Tin Man · May 23, 2020

Hi all!
I have a set of header pipes I'm looking at using. The end of the pipe that seats into the head seems worn or uneven to the face of the welded flange. It varies from 5/8 to 1/4. I'm wondering if it I need to square it up by refacing it or even build it up with a weld and reface or if it's just fine? Your advice appreciated.

Ratranger · May 24, 2020

I don't think that part make a big difference. The rings are what holf it all in place and crush the gasket.

The Tin Man · May 24, 2020

Ratranger said:
I don't think that part make a big difference. The rings are what holf it all in place and crush the gasket.

cool learning all the time.

5twins · May 24, 2020

Yes, that end just sticks into a step cut into the exhaust port and centers the pipe. It doesn't butt up against anything and seal. Here's a cutaway view of the MikesXS torque insert. It's designed in a similar manner to the end of a stock headpipe. As you can see, that stepped down end doesn't seal to anything, just centers the part in the head .....

The Tin Man · May 24, 2020

Thats why you are a Guru,, how goods the cut away!. i am member of the AND the National Dyslexic Association a picture is worth 1000 words!

5twins said:
Yes, that end just sticks into a step cut into the exhaust port and centers the pipe. It doesn't butt up against anything and seal. Here's a cutaway view of the MikesXS torque insert. It's designed in a similar manner to the end of a stock headpipe. As you can see, that stepped down end doesn't seal to anything, just centers the part in the head .....

The Tin Man · May 24, 2020

Does anyone use3 muffler putty or gue of somekind or just the gasket? Im wondering the same at the moffler header join. seems it could be a little leaky?

Header pipe to head fitment

The Tin Man

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