<VV> Cooling the Corvair Engine

[FrankCB at aol.com]

Guys,
    I haven't seen anyone mention what I think is a  good possibility for 
improving the cooling of the engine.  How about  PREVENTING the heat from the 
manifolds and engine compartment piping (in the  case of the turbos) from getting 
back to the engine by thermally coating the  inside AND the outside of the 
headers and turbo pipes with a ceramic  coating as offered by outfits like Swain 
and Jet Hot.  The inside coating  would help protect the metal from excessive 
expansion as well as keeping the  exhaust gas HOTTER so it's more effective 
when it hits the turbine wheel in the  turbo.  The outside coating would keep 
the manifold and engine compartment  piping from sending heated air back into 
the cooling system.  
    Comments???
    Frank "cooler heads needed" Burkhard
 
 
In a message dated 8/3/2007 3:56:27 PM Eastern Daylight Time, ronh at owt.com  
writes:

The  manifolds won't be radiating, they will be convecting and the heated air 
 
will rise up through the engine and into the engine  compartment.
RonH

----- Original Message ----- 
From: "Tony  Underwood" <tonyu at roava.net>
To:  <virtualvairs at corvair.org>
Sent: Friday, August 03, 2007 3:14  PM
Subject: Re: <VV> Re: VirtualVairs Digest, Vol 31, Issue  7


> At 10:49 PM 8/2/2007, Roger Gault  wrote:
>>Tony,
>>I wondered about the logs heating the heads  too.  In particular, I 
>>wondered
>>if that was the  reason the left side thermistor reads higher (under the
>>log).   So, I insulated the area between the logs and the heads with  
>>multiple
>>layers of aluminum foil to block any  radiation.  I was shocked to find 
>>that
>>I couldn't  see any difference in the thermistor reading (actually,  a
>>thermocouple mounted on a bolt in that  position).
>>
>>I still think the logs should heat the  heads, since they're probably 
>>running
>>somewhere above  1000F at highway speeds, but I don't know how to explain
>>away my  experimental results.
>
>
> As long as the fan is blowing  air through the heads, it's likely the 
> manifolds won't contribute  much.   But when you shut down the engine and 
> it sits there  with the hot manifolds radiating, the heat soak  begins.
>
>
> It's as good a reason to look at headers as  any other.
>
>
>
> tony..







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