Will Running Open Headers "Burn Up Valves?"
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Will Running Open Headers "Burn Up Valves?" My friend was trying to convince me that running open headers would "burn up the valves." First of all, what is he talking about and second of all, why is he wrong? 
The only way I've heard of screwing up a valve is by starting the motor with no headers/manifolds on it. That would cause a bent valve. There are probably a million cars running at the track with open headers. Some even drive on the street with them and have no problems, other than the noise.
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Originally Posted by LS69TA
The only way I've heard of screwing up a valve is by starting the motor with no headers/manifolds on it.
We're talking about the exhaust valves in the heads, right? How would running open headers or no headers/manifolds "burn them up?"
I know it won't, but I'm trying to argue that it won't.
it might happen if you run your motor with out any manifolds or headers at all. Although i've never in my life heard of this happening. The theory is that what happens is after you turn off your motor the cold air will hit the valves to quick and damage them.
Since you have a header on it and hot air rises the hot air will will stay in the tube by the head. So he is wrong.
Since you have a header on it and hot air rises the hot air will will stay in the tube by the head. So he is wrong.
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Thread Starter
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From: Southeastern IL
Originally Posted by SUX2BU
The theory is that what happens is after you turn off your motor the cold air will hit the valves to quick and damage them.
Since you have a header on it and hot air rises the hot air will will stay in the tube by the head.
Since you have a header on it and hot air rises the hot air will will stay in the tube by the head.
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