<VV> LM turbos and no lower shrouds

[jvhroberts at aol.com]

 As a turbo owner, I'd have to say you're dead wrong. Mine definitely ran cooler with the lower shrouds removed, and even then, adequate is NOT a word I would use! These cars can always use more, especially at prolonged full power. 

 

John Roberts
 

 

-----Original Message-----
From: Eric S. Eberhard <flash at vicsmba.com>
To: jvhroberts <jvhroberts at aol.com>; virtualvairs <virtualvairs at corvair.org>
Sent: Mon, Oct 24, 2011 5:36 pm
Subject: Re: <VV> LM turbos and no lower shrouds


I really think that a stock engine with the stock cooling is more 
than adequate.  In fact, I would bet money that a stock engine with 
stock cooling runs COOLER than one with the shrouds removed.  And I 
dare you to drive spiritedly and get that lower part really hot and 
then splash through some cold water.  And, I really like my heater in 
the winter.

You don't get much worse (for straining the cooling system) than the 
spirited driving in AZ where 105 is common, 120 happens .... I never 
had cooling problems even on steep grades.  I drove my little Spyder 
30k miles and it never complained.  I've gone over 100 mph in that 
car when it was over 100.  My coupe has A/C and PG and I can drive it 
up a 6% grade with A/C on (which blows ice BTW stock except Sanden 
compressor) at 75 (my engine is tweaked a little, it is a 110 instead 
of 102) when it is 105 out, no problems.  In fact in all of my life 
of having Corvairs (including 2 LM turbos and 1 EM turbo) and always 
with stock shrouds, bellows, doors, and very importantly the sealing 
of the engine compartment -- I have never had a Corvair 
overheat.  Not even after losing a belt (STOP fast!).  In fact, if 
anything I'd complain that it warms up too slow on cold days ... 
seems to take forever even with the doors closed and the summer 
plates off.  And I am not in-experienced -- I've had them 35 years, 
10 more years if count the ones I worked on with my grandpa, and I 
have owned as many as 10 at a time, never zero, and currently 
2.  Last time I checked I have had more than 30 Corvairs.  I actually 
do know what I am talking about.  So I will simply have to agree to disagree.

E

At 03:30 AM 10/23/2011, jvhroberts at aol.com wrote:
>Um, the stock system is not all that and a bag o' chips. Sorry. For 
>those of us who have turbo cars, etc., the cooling is utterly 
>inadequate. Removing the shrouds produces a noticeable drop in CHT 
>and oil temperature.
>Even on a non turbo car, if driven spiritedly, the cooling system 
>runs out of breath.
>
>So, there is, in fact a better system out there. GM simply failed to 
>install it!!
>
>John Roberts
>
>
>-----Original Message-----
>From: Eric S. Eberhard <flash at vicsmba.com>
>To: virtualvairs <virtualvairs at corvair.org>
>Sent: Sun, Oct 23, 2011 2:30 am
>Subject: <VV> LM turbos and no lower shrouds
>
>
>
>
>I am always puzzled by this discussion which comes up every so
>often.  The car was designed well from the factory.  If you have
>everything correct -- all the shrouds as well as seals and so forth,
>there is no better system.  I am in AZ, totally bone-stock, at
>altitude (3500-8000 feet), summer temps of 110 ... and I NEVER have
>even gotten remotely close to overheating.  Our speed limit is 75 and
>I can go up a 6% grade at 80, no over heating.  From my 3500 to 7500
>feet happens in 6 miles, no overheat even at 80.
>
>


Eric S. Eberhard
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