<VV> Porsche Cooling

[Ron]

What's all this nonsense about comparing details between a Porsche and the 
Corvair?  In case you haven't noticed, there's a slight difference in the 
money involved on these two vehicles!  It's comparable to comparing a Cessna 
150 to a P 51 Mustang and criticizing the Cessna because it wasn't equal to 
the P 51.  The delete button is the only recourse.
Ronh

----- Original Message ----- 
From: <jvhroberts at aol.com>
To: <ricebugg at mtco.com>; <virtualvairs at corvair.org>
Sent: Saturday, September 10, 2011 10:49 AM
Subject: Re: <VV> Porsche Cooling


>
> From a clean sheet approach, one of the ways to improve the cooling 
> ability of air cooled engines is to use lots of little cylinders instead 
> of a few larger ones, and an 8 cylinder 91 CID engine certainly fits that 
> description! After all, VW had engines that size with half the cylinders.
>
> Porsche chose the flat 6 for the 911 because the 4 cylinder design was a 
> dead end as far as their performance targets go. Same goes as to why they 
> chose OHC, 8 main bearings, etc.
>
> Your point about the stillborn evolution of the Corvair is spot on. Once 
> they decided on a PG trannied econocar, little was done to advance beyond 
> that stage. Look at a 1965 180HP engine and a 1960 80 HP engine, and 
> outside the induction equipment, the differences aren't impressive. 
> Whereas a Porsche 2.0L  911T engine vs. a 3.0L 911 SC engine a decade and 
> a half later are night and day.
>
> Not to defend Porsche or spank Chevy, but this is pretty much how it is. 
> I've actually seen more improvements from individuals and the aftermarket 
> for Corvairs than GM ever did!! LOL
>
>
>
> John Roberts
>
>
>
>
> -----Original Message-----
> From: James P. Rice <ricebugg at mtco.com>
> To: virtualvairs <virtualvairs at corvair.org>
> Sent: Sat, Sep 10, 2011 11:59 am
> Subject: <VV> Porsche Cooling
>
>
> Sorry for the tardy response, but Porsche certainly had figured out how to
> cool the center 4 cylinders of their 1.5L flat 8-cylinder F1 engine.  But
> then they used a shaft driven flat fan.
>
> There is some reason to believe Porsche known Chevy R&D had stuffed a
> Corvair into the back of a 356 and said stuffing may have influenced them
> going to a 2L 6 cylinder.
>
> But trust me, Porsche had the brains and talent to do what they did even 
> if
> Chevy produced the Chevy II in 1959 instead of the Corvair.  Which 
> actually
> probably would have sold a lot better than the Corvair, give the sales
> response to the Falcon.  Remember the Falcon set new car sales records 
> that
> first year and out sold the Corvair 2 or 3 to one for both of their
> production lives.  SFAIK, nobody in this community has considered the 
> impact
> of Chevy II sales on the demise of the Corvair.
>
> The belt drive fan on the Corvair was designed for an economy car with a
> automatic transaxle.  When Chevy put a manual into the car, and folks 
> could
> go out and play boy racer by banging shifts up and down, there were
> problems.  Compounded by nobody knowing how tight or loose to adjust them.
> In the 2nd race the Corvair ever participated in, they (apparently Chevy
> R&D) had created and installed the first spring load idler pulley on the
> cars with good success.
>
> Historically Yours,
> James Rice
>
> ------------------------------
>
> Message: 8
> Date: Fri, 19 Aug 2011 15:12:02 -0400
> From: Marc Sheridan <sheridanma1966 at gmail.com>
> Subject: Re: <VV> Mecum Monterey - 63 Vair
> To: Wrsssatty at aol.com
> Cc: virtualvairs at corvair.org
>
> Bob Benzinger told us in Flagstaff that Porsche could not figure out how 
> to
> cool the center cylinders until Chevrolet did it with the Corvair.
>
> Marc Sheridan
>
> ------------------------------
>
> Message: 9
> Date: Fri, 19 Aug 2011 15:25:46 -0400
> From: "BBRT" <chsadek at comcast.net>
> Subject: <VV> '63 911 - '63 Vair
> To: <virtualvairs at corvair.org>
>
> Well, maybe Porsche had a problem with their center cylinders on their
> development 6 cylinder engines, but the 911 came out in '63. First US 
> models
> were delivered in '65, the last year of their 356. They sure didn't adopt
> the right-angle Corvair belt driven cooling fan... :>)
>
> Chuck S
>
> ----- Original Message -----
> From: "Marc Sheridan" <sheridanma1966 at gmail.com>
>
>> Bob Benzinger told us in Flagstaff that Porsche could not figure out how
> to cool the center cylinders until Chevrolet did it with the Corvair.
>>
>> Marc Sheridan
>
>
>
>
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