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935TURBO's Avatar
 
Join Date: Jan 2007
Location: PARIS & BURGUNDY....FRANCE
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993 GT2 evo cams....on 930/66...?

Hi,

one of my friend asked me about the possibility to fit 993 GT2 EVO cams on his 930/66 engine....is that possible....?...does some of you did it....?....

Thanks...
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Old 03-09-2008, 02:59 PM
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Hi Serge,

I've put those cams in four different engines. Two 3.3's, one 3.4, and one 3.6.

I was not the boss at the time and personally think the 964 cam is probably more than adequate for most 930's for all around performance

I don't remember all the details but here goes...



All with CIS injection. I can't remember all the port sizes but I remember one 3.3 had 36mm intake ports, the other 3 had 38mm. All had billet injector blocks to match.

I used cams from Webcam, they timed to 2.65mm lift on overlap.

They all had a fair amount of "cam lurch" which was an obnoxious violent pulsing when coasting below 1800 rpm, the cars w/ lightweight flywheel/clutch combos were really annoying...

Be prepared for your eyes to "tear up" anytime your checking the oil, and you may want a change of clothes after, from the fumes, this is with CO set for smoothest idle/low end possible.

One car had a prototype SSI exhaust w K27, the others had a short tube header config w/ the flat style collectors, not the best...

I think they all ran at least 7bar of CIS system pressure...
Old 03-09-2008, 07:39 PM
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I run those cams on a Motec 3.45 engine (3.6 stroke and chamfered head). Runs like a dream. Haven't heard of using those cams on a CIS engine however.

Last edited by Bruce M.; 03-10-2008 at 02:04 PM..
Old 03-09-2008, 10:46 PM
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I got them on my 3.4 motor (3.6 crank/stk pistons/cyls) and I love them. The car woke up in the midrange and up top. Low end drivability is a little sacrifice.
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Old 03-10-2008, 01:55 PM
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I have them in mine, 3.4 pistons, 3.6 crank etc. Olli has them in his as well and IA generally uses them for their EFI builds.
Old 03-10-2008, 02:44 PM
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