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Recommend a Cam
Looking for some recommendations for cam choice. Engine will be a early aluminum cased 2.7 liter. Case will have all the mods done to it for high RPM operation as will the crankshaft. 10.5:1 compression JE Pistons, Dual Plug Heads ported to 43 intake, 40 exhaust. Induction is ITB and EFI, ignition also computer controled. Use is 90% Track, plus driving there and back and occasional early morning back road blasts. I don't need to worry about driving in stop and go traffic so high RPM operation will be the norm. I am looking at the motor being safe to 7800 and want my power band to peak around 7500. This is going to go into a 68R styled car with a 901
Suggestions?
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Robert Currently Porsche less (but the wife has 2) |
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02-05-2008, 08:20 AM
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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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02-05-2008, 08:50 AM
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Location: Portland Oregon
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Quote:
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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02-05-2008, 01:28 PM
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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
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The GE60 is very nice for a track car wih ocassional street time. In that vein, look at the DC62, as well.
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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02-05-2008, 01:29 PM
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Everything that I think you will need to know is right here.
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John '69 911E "It's a poor craftsman who blames their tools" -- Unknown "Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman |
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02-05-2008, 02:01 PM
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Thanks for the suggestions, and the reading, my eyes, and head hurt now
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Robert Currently Porsche less (but the wife has 2) |
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02-05-2008, 05:32 PM
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Looks like GE60's are only available for 4 bearing carriers? Can you just swap the carriers and use them with earlier (2.7) heads?
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Robert Currently Porsche less (but the wife has 2) |
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02-06-2008, 02:21 PM
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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
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You can run 4 bearing cams in 3 bearing carriers as long as the bearing diameter is correct (turned down).
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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02-06-2008, 02:24 PM
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You probably know this but you must use stiffer valve springs and/or titanium retainers with these cams.
-Andy
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72 Carrera RS replica, Spec 911 racer |
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02-07-2008, 10:08 AM
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I recommend a SC or T cam
AM
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1970 911E - track / weekend car 1970 911S - under restoration 1986 930 Slant Nose - fun car |
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02-07-2008, 10:45 AM
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Robert Currently Porsche less (but the wife has 2) |
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02-07-2008, 11:05 AM
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 By the way, I just ordered some Nitto NT01's from the place in ON I sent the link to, almost $300.00 cheaper with shipping than I could find them in Calgary. And hows this for an idea for the EFI?   I'd need an adapter plate for the manifold bolts, but can you say DIY High butterfly?
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Robert Currently Porsche less (but the wife has 2) |
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02-07-2008, 11:10 AM
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1968 Porsche 911T
1986 Porsche Carrera
1969 Porsche 911E 2.0 E
