993.NINJA

Does anyone know what engine number M64/85S on a 993 is fitted to ??

Bill Verburg

I have no record of M64/85S
M64/05S was the 3.8 power kit aka X51 that was retrofitted to '94/95 M64/05

M64/75 was 993 RSR w/o intake restrictors
M6480 was 993RSR w/38-48.2m intake restrictors
the last M64 was 1999 993GT2Evo, only 1 was built w/ M64/84

993.NINJA

Thanks for the info Bill.
The stranger thing is, it does exist but I cannot find anything either.
Could it have been a GT2 3.8 kit that Porsche Motorsports was going to release, but found the power was still not enough to compete at Le Mans, so left it to concentrate on the GT1.
(Guessing).

Do you know where the one of GT2 3.8 is in the World ?

Bill Verburg

I don't know that that last GT2 was a 3.8, it was built in 1999 and was built to the then current GT2 racing spec chassis # 1463 892

It's only appearance(that I know of) was the Feb 2000 Daytona 24, Drivers Z. Brown, D. Warnock, S. Trenery, V Rice. It wore #4 and finished 72nd/17th in GTO

993.NINJA

Here's what I found.
But still not the M63/85S but seems closer.

Bill Verburg

right you are, I had typo'ed that in my dB

cr was also raised to 9.5 from 8 on the Evos and 9 on the street GT2

I'll keep looking, how do you know this exists?

993.NINJA

Yes, it definitely exists.
A Racing team's owner used to have the 993.

993.NINJA

The 993 was used by many top customer teams until as late as 2001 (Roock, Konrad, Freisinger, Larbre, etc) and would have had close support from the factory.
Good info mentioned to me by GT Porsche Magazine.