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C3-R C3-R is offline
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Join Date: Apr 2004
Location: New Jersey
Posts: 76
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3.2 CIS questions

So I have 1974 911 hot rod with steel 930 flares, a dp front spoiler and rear bumper and a 3.2 CIS motor built by RUF when they were doing the original SCR cars back in the early 80’s. The motor recently dynoed at 193 at 5600 rpm and 205 tq at 4000 rpm at the wheels on a dynapack dyno. It has SSIs. I’ve been researching on the forum to see if there are any ways to potentially get a little more power out of the engine and understand that the cis is a limiting factor especially with going for hotter cams. I believe the compression ratio is 9:8 which is I believe higher than stock. And the motor hasn’t been apart under my ownership so i don’t know what cams or pistons are in it. Because the motor is healthy there’s no reason to disassemble other than to check what internals it has. All that being said I was thinking a modern fuel injection system would help but there’s a part of me that thinks PMO carbs would be a cool old school touch and feel. What gains could I realistically expect to achieve by going with either modern fuel injection or carbs? Thanks in advance.
Old 11-03-2023, 09:37 AM
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