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cam timing 120/104 web cams?
Webcam's site does not show any info on cam lobe centers or set up timing. Can anyone help?
thanks! dave |
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06-11-2005, 12:56 PM
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Thanks to Steve Weiner at Rennsport for the help!
db
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1970 914-6 street"evil cockaroach" 1970 911 Targa "ST" Jade Green IROC Tribute (ready to race) |
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06-11-2005, 01:08 PM
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PRO Motorsports
Join Date: Nov 2001
Location: Burbank, CA
Posts: 4,580
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The answer is 5.2mm. Just posting the info to help anyone if they find this thread while doing a search.
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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06-11-2005, 04:20 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Dave & Tyson:
Good talking with you today and happy to help, anytime...  Lobe centers are 100 deg; I & E.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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06-11-2005, 08:05 PM
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I had good results by advancing the 120/104 cam slightly past 5.2. The HP curve goes right off the charts on my 3L and this moved it down slightly. In retrospect I think I got the wrong grind...
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Chris ---------------------------------------------- 1996 993 RS Replica 2023 KTM 890 Adventure R 1971 Norton 750 Commando Alcon Brake Kits |
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06-11-2005, 09:32 PM
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PRO Motorsports
Join Date: Nov 2001
Location: Burbank, CA
Posts: 4,580
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Thanks guys!
These cams replaced the 906 grind that came in Dave's motor. What possesed Dave to buy a full-on race motor for his street/track 914/6 is beyond me. (Errrr, no it isn't  ) These cams are much more responsive at lower revs, but I've got some more carb tuning ahead of me to get the top-end where it should be. Should be a screamer when she's dialed-in. Thanks again Steve!
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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06-16-2005, 07:34 PM
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1970 Porsche 911 S 
