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River Rat
Join Date: Dec 2005
Location: 1000 Islands NY
Posts: 404
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Good Cams for 930
A buddy of mine is cleaning out his garage of nonessential Porsche parts and he has a set of Web cams that I could pick up. The number on the box is 05-281 and I checked on the Web Cam web site and found the following description:
Valve Lift 485/.452 Duration 258°/246° Duration @ .050" 238°/226° Grind Number 20/21 Special performance profile for 911SC / Carrera / 964 engines. Works with stock injection. Price Per Set (2) I have an 86 turbo with a few bolt-ons: k27-7200, 1 bar boost, B&B exhaust, Andial intercooler, etc. I was thinking about picking them up and using them when a rebuild is necessary. Does anyone have any experience with these cams in a 930? Regards, Dave
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1986 930 - K27-7200, Andial Intercooler, Tial Wastegate, Electronic Boost Controller, B&B headers, Bodart Zork, Leask Adjustable WUR, Full Elephant Racing Suspension w/Adustable Spring Plates and Von Shocks, Wevo Transmission Mounts, Fuel Safe Fuel Cell, Forgelines (9"/11"), Hargett Shifter, Innovate AFR, Cobra CF Seats, DAS Rollbar, Coleman Floating Rotors, Lightweight Interior, Forgeline 17" x 9"/11", 2800 lbs. |
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11-11-2008, 06:03 AM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Dave,
Those cams would work just fine in your 930, especially with CIS.  Just make certain that your AFR's are OK above 4K at 1 bar.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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11-11-2008, 07:34 AM
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Registered
Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
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Call Laurie @ Webcam and ask her opinion relating to how you are going to drive the car. 951-369-5144
She ground them and she knows her stuff.. she's fun to talk to and she can recommend the cam timing for them. Those cams have a little more lift and duration than 964/C2 cams which for her are grind #40. Going beyond 964 cams in a CIS 930 with 7:1 compression ratio may leave you wishing you had more midrange power if you drive on the street. Her favorite 930 street cam is SC/Carrera grind for good midrange power. |
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11-11-2008, 10:22 AM
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Smart quod bastardus
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Why did not Porsche go with the SC/Carrera grind for good midrange power to begin with when they sold the car?
I don't understand why Porsche never used these cams if they were better than the stock original 930 cams? Was it emissions or what? Fred
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, full bay intercooler, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.95 bar max ---"When you're racing it's life! Anything else either before or after, is just waiting" |
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11-11-2008, 01:01 PM
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Registered
Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
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They did use them...
They used SC cams in the higher horsepower 930S. and, The '94 3.6 liter turbo S came with 964 grind cams in it. |
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11-11-2008, 01:26 PM
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Max Sluiter
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Why don't they put a GT3 motor into a Cayman and strip out the plush interior?
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance |
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11-11-2008, 02:08 PM
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Wer bremst verliert
Join Date: Jan 2005
Location: Toronto, Ontario
Posts: 4,767
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Or a GT2?
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2007 911 Turbo - Not a toy 1985 911 Cab - Wife's toy 1982 911 3.2 Indiash Rot Track Supercharged track toy 1978 911 3.0 Lichtbau toy "Gretchen" 1971 911 Targa S backroad toy |
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11-11-2008, 03:54 PM
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Made in Flacht
Join Date: Jun 2008
Location: VA & MA
Posts: 58
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I'm guessing that emissions played a big part in cam choice at Porsche in the mid-80s especially for the CA market which took a big chunk of US sales.
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1988 944S 2001 Boxster S Seal Grey, M030, PSM 2003 Ford F-350 Dually 6.0 litre Turbo Diesel - You think YOU got torque  1995 International 9200 Road Tractor 11 Litre Single Axle Daycab Eaton Super 10 Tranny |
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08-06-2009, 12:50 PM
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Herman the German
1971 Porsche 911S
