Alloy case 6

[Howard R]

Hi All

Do any of you historians out there know whether the factory put any alloy case motors in the early 6's. At the time the car was released Porsche was using the alloy motor in the 911. The Targa rules we race under prohibit changing the case material so you can't put a 3.6 in a mag case 911 or 914, but it also stops you putting an early alloy 2.0 case in a later mag case car.

Some hard evidence needed. Thanks.

How

[MXMARK]

How, I'm no historian, but I have read "In its six-cylinder format, the 914 was equipped with the 2.0-liter engine from the 1969 911T." Magnesium case.
This was from the Red Book. Maybe some one else knows.
I hope this helps, I hope they did a couple of cars for your sake.
Mark

[Dave at Pelican Parts]

AFAIK, all 911 engine crankcases were magnesium from 68 or 69 through 75. In 76, the Turbo got the aluminum case, and of course the SC was the first "regular" 911 to have an aluminum crankcase since "early 1968", according to Anderson's book.

I think you're SOL on the aluminum case.

--DD

[SteveStromberg]

I would ask the Rules Steward about that. You are installing a heavier case in your car. The rule was most likley written to pervent changing Cast Iron Blocks to Alloy reducing weight not adding as in you would be doing. Steve

[BURN-BROS]

Btw, the factory did use alloy cases for some of their race prepared cars in the 70s. Try to track down if the 916s or gts were prepared this way. I don't know if this would fit you in with the rules but I hope this helps.

[Howard R]

Thanks for the input guys.

[Dave at Pelican Parts]

I believe that the 916s (which were street cars, BTW) all used mag cases. Some of the race motors may have used aluminum cases; I am not sure. But the factory 914-6 race program was pretty haphazard at best... Good luck documenting any of those cars!

--DD