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Re: Thermal Coatings
- To: quattro@coimbra.ans.net (Non Receipt Notification Requested) (IPM Return Requested)
- Subject: Re: Thermal Coatings
- From: glen.powell@smc.com
- Date: 18 Apr 1995 16:36:42 -0400
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- P1-Message-Id: US*ATTMAIL*SMCLAN;X400ATT Apr 18 16:36:42 1995
- P1-Recipient: quattro@coimbra.ans.net
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- X400-Trace: US*ATTMAIL*SMCLANarrival 18 Apr 1995 16:36:42 -0400action Relayed
From the turbo on back you do *not* want to coat or thermal-wrap the
exhaust. You want the exhaust to expell as much heat as possible to lower
the density and volume of exhuast gasses to be expelled, this reduces
backpressure and helps to decrease turbo lag and bring the boost up
faster. Do all your coating/wrapping before/at the turbo, turbine side
only. A Pro-Rally guy I know wrapped both the exhaust manifold and the
turbo and he says the performance improvement is noticable. Wrapping of
cast exhaust manifolds is NOT recommended though, due to the increased
possibility of cracking. I may look at the possibility of coating the SS
header for the Killer ur-Q Engine From Hell project.
-glen