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This past week I have been breaking the speedster down. I asked it what it would want to be when it gets put back together. Pretty sure I heard something about a 917. Not sure how i would cram 8 more cylinders into the engine compartment, but the horizontal fan shroud is reminiscent of the 917 motor.
Its a good look, I think. I would have switched the linkage on the carbs so the cross bar sat close to the firewall. Not that its ever gonna happen, Just wondering if there is a kit of sorts out there for this. I had never seen it before on a type I.

Bill... great answer.

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Corvair, hmmm. Not what I was going for. I was doing research on the 911 fan shroud conversion today. Seems to be problems with uneven cooling of the cylinders from one bank of cylinders to the other. If you were to take a large fan, center it beetwen the cylinders, and blow air directly down wouldn't it be easier to divide the air equally? That has gotta be to "simple" right?
Actually, GM blames Ralph Nader for the demise of the Corvair. By the time Ralphie boy wrote his book "Unsafe at any speed" GM had switched to IRS and had very little problems with the Corvair.

Back in the 60's. I remember seeing several 356 Porsche's with a Corvair engine. You had to split the case and install a reverse rotation cam shaft or, swap the ring gear as the GM engine rotated opposite from a VW or Porsche 4 cylinder
A lot of my friends still use Corvair power in their sandrails and several companies make some really neat products to increase Torque and HP. The 140 engine had 4 carb's to feed 6 cylinders, several companies did machine work and produced manifolds to accommodate Porsche triple Weber Carbs. Very strong engines for their day.
I've owned a '62 swing axle Corvair (to which I added a camber compensator and seat belts) and an IRS '65 Corvair. The '65 lasted me 250,000 miles and its' new owner drove it away.

Nadar didn't really kill the Corvair, as stated above, GM had all ready changed to an IRS when the book was published. I was working for GM at the Tech Center in Detroit at the time. GM politics killed the Corvair. The head of Chevy Engineering (Knudsen?) was in the running to be GM president. His GM rival used Nadars book to kill him. You may recall GM never defended their position or educated the public on the difference between swing axle and IRS? The rival became GM president. The Corvair was a great handling small car, sacrificed to GM politics. "69 was the last year. You could argue that air cooled engines died when the Clean Air Act was passed in 1970. Fuel injection could have saved it, but that would have cost GM more money.
The horizontal fan on the Corvair was famous for tossing off the fan belt anytime you hit over about 5500rpm, at least mine was. I had a new 63 Turbo Spyder for a short period of time and I tossed the belt a dozen times or more. New belts, 4 different dealerships, who knows how many mechanics, and the regional GM tech rep all had their hands in it, and it still tossed the belt when you least wanted it to.....new pulleys, new fan assembly, all no resolution.

The photo at the start of this thread reminds me all too much of the Corvair.... but on the other hand I had a 65 Corvair that never tossed its belt, but it wasn't the turbo either....it's fatal flaw was eating the outboard crank seal often....
when i was in college i had a '63 corvair...it leaked a little oil but was fairly reliable with no problems to speak of...it was an automatic so that funky shift lever on the dash took a while to get used to...one night it was stolen since the ignition would turn with a screwdriver...the police found the car a few blocks away where the thieves had abandoned it because of a tossed fanbelt.....
Jim, if my totally unreliable memory serves me - it seldom does - there was an engineering change between the 63 and the 64 Corvair engines. They increased the displacement in 64 and changed the depth of the idler pulley and maybe the spec on the fan belt also?

I did blow the fan belt off my 65 - twice in five minutes - but that was coming down a mountain driving way too fast - with an automatic yet. But that was the only incident in over 20 years of ownership. that 65 was absolutwly the most dead reliable vehicle I have ever owned. Ever!
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