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GMC V6 and V12 Engines Engine repair and rebuilding |
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#1
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What is the flap in the right side exhaust?
Ok, I'm sure I am just ignorant, but what is the exhaust flap thing in the right hand side exhaust?
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#2
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Re: What is the flap in the right side exhaust?
It's a heat riser valve;
The heat riser valve is located between the exhaust manifold and the head pipe and is used to hasten the warm-up of a cold engine. Malfunctioning or frozen valves can cause loss of power or exhaust manifold damage.
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1961 GMC Suburban 305A Overdrive 1962 GMC Utility 305D |
#3
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Re: What is the flap in the right side exhaust?
You can remove it with out any problems if you want.
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#4
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Re: What is the flap in the right side exhaust?
Crazy exhaust guy left mine in, I just leave it open. Doesn't hurt a thing.
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"Excuse the rust I use my truck" 1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. 1964 Chevy C20 292/SM420 1966 Chevy C10 292 hotrod 6/TKO600 My youtube channel aka Military Chevy: To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. |
#5
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Re: What is the flap in the right side exhaust?
Thanks for the info! Yeah mine was rusted about 1/4 of the way open. I just dropped out the exhaust to get the new 3" with a flowmaster 50 welded up!
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