<VV> LM turbos and no lower shrouds

[kevin nash]

Eric- The only way I've been able to "never even come close to overheating" my early turbo when it was completely stonestock was to drop the compression ratio down to 6.5:1. I found it impossible to get the head temps much over 350 degree's no matter how hard I pushed it. When it was set-up that way, I usual ran regular gas in it during the winter and spring, justto help warm it up a little more quickly. During the summer months, then I ran Super, just to make sure I wasnt going to haveany ping problems- I beat that car on a daily basis for years, and it never pinged, never had any sort of high head temps, anyof the usual complaints that others have had with (completely stone stock and well cared for) turbo corvairs. But then again,the guys that I had heard the complaints from were running the stock compression ratio!  I have to believe that your elevationhas something to do with it. Kevin Nash
> 
> Message: 6
> Date: Mon, 24 Oct 2011 14:35:52 -0700
> From: "Eric S. Eberhard" <flash at vicsmba.com>
> Subject: Re: <VV> LM turbos and no lower shrouds
> To: jvhroberts at aol.com,virtualvairs at corvair.org
> Message-ID: <6.2.3.4.2.20111024142421.0725b2d8 at mail.spamarrest.com>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
> 
> 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.