Author Topic: Hot Air Blockoff  (Read 1309 times)

Offline jdon88

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Hot Air Blockoff
« on: February 28, 2018, 08:18:33 AM »
I'm getting ready to convert to electric choke and wondering how to block off the intake port where the hot air tubes go thru to the exhaust passage.  This is for a 1976 Pontiac cast iron intake, I would use the existing part with the upper tubes removed but I can't find a gasket for it.  Or I could make a block off plate and make a gasket out of high temp gasket material.  Any thoughts?

Offline unruhjonny

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Re: Hot Air Blockoff
« Reply #1 on: February 28, 2018, 03:16:49 PM »
The lower part shouldn't need any gasket, but I have seen exhaust type gaskets used here...

I would personally just reinstall it, and not give it a worry unless it leaks.

I cannot recall if the felpro full gasket kit even provides anything for this spot...

Offline jdon88

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Re: Hot Air Blockoff
« Reply #2 on: March 01, 2018, 11:57:39 AM »
The original one had a gasket but it came out in pieces.  I ended up making a block off plate by cutting and grinding some steel I had around.  I made the gasket out of the exhaust crossover block off material that came with the intake gasket.  I tried to add a picture but file size too large?