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Old 5th February 2017, 11:43 AM   #41
2 Tenths
United Kingdom
Join Date: Jun 2009
Location: Glos
GT40: A Tractor
Posts: 250
Re: The season starts soon.

Originally Posted by MHNCO View Post
I know nothing about Porsche drivetrains but wondered if one could fit in an air-cooled flat 6 from the 911? 917s are right up there with me but have never considered one as I imagined the expense of running the proper flat 12 would make it an unrealistic proposition.
Yes, you could very easily! Graham's car has an air cooled flat 6 in it, I am putting a 3.4ltr Direct Injection flat 6 in mine (from a Cayman S)and transaxle too. I think with an air cooled engine you'd be looking at using a G50 transaxle.
You could fit any engine in to be honest as there is a lot of room
I know of someone who is planning on putting a BMW M5 engine in his 917!! That'll certainly be an interesting ride!!
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Old 5th February 2017, 03:35 PM   #42
91740Gt's Avatar
6 Tenths
United Kingdom
Join Date: Jun 2003
Location: Suffolk, Englan
GT40: Racing
Posts: 630
Re: The season starts soon.

As my 917K is an outright race car, and in order to comply to "historic" type regulations in various series I have to run an aircooled Porsche engine. Mine is a "breathed upon" 3.6 ltr (964) engine and mated to a 915 gearbox for lightness. The G50 type are way heavier, and weight, or lack of, is everything in racing, especially with the 917, and the last place I want extra weight is on the tail end. Having to run silencers for most meetings does not help its balance, although I do remove the dog before a meeting !!!!!!!
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