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Join Date: May 2007
Location: Collegeville, PA
Posts: 1,369
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Camshaft options for twin plugged 3.4L Motronic
Guys,
I'm rebuilding my 3.2L Carrera into a reliable, street performance car. I'm sticking with Motronic for now but building so that I can go Carbs or ITBs down the road, with the understanding that I'll need to change camshafts when I do make that move. I realize Motronic limits my camshaft options, but I'd like to what my options are. My goal is a reliable street rod that's also fun to drive at DE events. I've read that 964, 993ss (Daugherty) and Webcams 20/21 are popular options. How will these cams vary? Any other options I should consider? Here's my build sheet: Carrera Crank/Oil Pump/Case Reconditioned/Balanced Carrera rods with ARP rod bolts Mahle P&Cs - 98mm bore with 10.4:1 static compression - "RSR" - Hemi-shaped dome with double valve reliefs Supertec Head Studs Supertec-Rebuilt Cylinder Heads - twin plugged - titanium springs/retainers 964/993 twin plug distributor Motronic Induction System with Andial Splitter J&S Safeguard to handle knock Steve Wong custom chip 993 Heat Exchangers with Flowmaster muffler Thanks for your input.
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Andy - 1987 911 Carrera Coupe |
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abit off center
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That is the exact setup I have: I used his super cup cams from camgrinder.
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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Try not, Do or Do not
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Nice choice for the build.
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Henry Schmidt SUPERTEC PERFORMANCE Ph: 760-728-3062 Email: supertec1@earthlink.net |
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Craig - What's the power delivery like on the super cup cams?
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Andy - 1987 911 Carrera Coupe |
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abit off center
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The original setting of 2.0mm overlap gave very good low end but less at 7k. John said to set it at 1.6mm and it keeps pulling up to 7k without a problem. Very nice engine. Mostly street but some track.
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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Quote:
That's what I'm going for ![]()
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Andy - 1987 911 Carrera Coupe |
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Emissions are not a concern, by the way.
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Andy - 1987 911 Carrera Coupe |
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Registered
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Location: Collegeville, PA
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It looks like the DC20, 993 Super Cup and 964 Super C2s are about the hottest cam I can reliably run on a street car having pistons with valve reliefs. Do any of these seem particularly well-suited for my setup?
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Andy - 1987 911 Carrera Coupe |
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