<VV> Cooling the Corvair Engine

[Dennis & Debbie PLEAU]

Wow some real instrumented data!!!  Jim lowered his temps under the same 
conditions by around 200 degrees using the same meter.  Other than reversing 
the logs reversing the logs, everything he did is applicable to a car or 
van.

Dennis


>From: James Davis <jld at wk.net>
>To: virtualvairs at corvair.org
>Subject: Re: <VV> Cooling the Corvair Engine
>Date: Sat, 04 Aug 2007 16:38:50 -0500
>
>Case in point.  UV #388 with stock 140 exhaust system and de-flashed heads 
>- could not use full throttle for more than five minutes on a 90 F degree 
>day (cylinder head temps 480+ F).  Removed the air doors, kept the lower 
>shrouds, and reversed the cast iron exhaust - 400-450 F degree cylinder 
>head temps on 90 degree day @ 3,600 rpm full throttle (60 mph) for 30 
>minutes.  Replaced the cast iron manifolds and replaced with Clark's 
>headers (lower shrouds in place) - 300-360 F cylinder head temperatures on 
>90 degree day @ 3,600 rpm for 30 minutes  Replaced the 65 fan and top 
>shroud with a 61 radial blade (24 blade) steel fan and matching shroud - 
>280-320 F cylinder head temps on 90 degree day @ 3,600 rpm full throttle 
>for 30 minutes  .  Cylinder head temperatures measured with VDO instruments 
>with thermocouples on both heads in thermosister location. Same engine, 
>differential and transmission for 79,000 miles.
>Jim Davis
>