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Rufton · 05-15-2013, 01:18 PM

Valves like to burn if they don't seat properly; valve can't transfer much heat to seat if it doesn't touch.

Headers have more surface area than manifold so they radiate more heat.

05-15-2013, 01:18 PM	#5
Rufton Registered User Join Date: Apr 2013 Location: Knoxville TN Posts: 1,170	Re: 10 exhaust question Valves like to burn if they don't seat properly; valve can't transfer much heat to seat if it doesn't touch. Headers have more surface area than manifold so they radiate more heat.