Too much header heat!

Mendocino

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May 15, 2002

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Colorado

• Mar 27, 2005

• #1

Hi,

this has been beat to death here, but I wanted to post these images of my header heat damage. I had a Holley that ran very rich on my SBC, and changed it to a rebuilt Quadrajet, which runs much better and much leaner. Consequently there is much more heat. I drove the pig ~12 kms with the new carb and found the following (engine temp was fine):

In spite of all the commentary to the contrary, I will use header heat wrap, as that is preferable to the painful wiring kit.

Cheers,

Jeff

 

Last edited: Mar 27, 2005

Degnol

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Kansastitty

• Mar 27, 2005

• #2

How about an aluminum heatshield? You could attach it to the brace with bolts or sheetmetal screws. Might want to do both and make sure you are not running TOO lean. I had the exhaust manifold red hoy before I rebuilt my carb..


Ceramic coating????




GL

Ed

 

LC_Hamma

The Anti-Leafer

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Dallas, Georgia

• Mar 27, 2005

• #3

I had my headers ceramic coated locally. I bit spendy, but I'd rather not use the wrap - I think mud would cake on it too easily.

 

Mendocino

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Colorado

• Mar 27, 2005

• Thread starter
• #4

Carb is not too lean, the old one was way too rich. i have an aux tank so the exhaust vents behind the doors and it stank! When I get to it, I think i will go with cermic coated block huggers. At the moment I am gone for weeks at a time and have other things i need to get to.

--Jeff

 

P

Ponce

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Salem, OR

• Mar 27, 2005

• #5

What do your spark plugs look like?

 

camcruiser13

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sittin on the couch in UT

• Mar 28, 2005

• #6

i melted those same connections, i used heat wrap and now its much cooler, mud does turn them brown but i dont care as long as the temp is lower.

 

Kofoed

SILVER Star

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• Mar 28, 2005

• #7

LC_Hamma said:

I had my headers ceramic coated locally. I bit spendy, but I'd rather not use the wrap - I think mud would cake on it too easily.

Click to expand...

My muffler guy has a source that ceramic coats the inside of the headers, so the heat enver gets to the metal tube.