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Registered
Join Date: Apr 2004
Location: Philadelphia, pa
Posts: 469
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Cam Timing
I have just finished the cam timing process and I want to double check that I did it correctly. Is it correct that the cam dots on both the left and right cam should be both facing the same direction at the same time? And am I correct in thinking that the opening measurement at TDC (5.2mm) should alternate between crank revolutions (e.g., first revolution #1 cyc. opens, second revolution #4 opens, third revolution #1 opens again). Thanks in advance.
Don _________________________________________ 1963 356B Super 1969 911S 1981 911SC 2001 C320 |
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04-04-2006, 02:05 PM
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Join Date: Jun 2004
Location: Rio Rancho, New Mexico
Posts: 1,325
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Don,
You got it. Sounds like a hot cam.
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DOUG '76 911S 2.7, webers, solex cams, JE pistons, '74 exhaust, 23 & 28 torsion bars, 930 calipers & rotors, Hoosiers on 8's & 9's. '85 911 Carrera, stock, just painted, Orient Red |
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04-04-2006, 05:51 PM
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Join Date: Apr 2004
Location: Philadelphia, pa
Posts: 469
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Can I get more bottom end power by advancing the cam somewhat?
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04-05-2006, 02:15 PM
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Join Date: Feb 2004
Location: California
Posts: 926
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Quote:
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John Dougherty Dougherty Racing Cams |
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04-05-2006, 02:50 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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2.0S w/ Webers, right Don? Sounds like the rebuild is coming along great. Congrats!
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- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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04-05-2006, 03:00 PM
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Join Date: Apr 2006
Location: Norway
Posts: 3
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Hey Don, what kind of engine are you making, and what type of cams are in it.
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-58 Porsche traktor -75 911 -85 944 |
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04-06-2006, 07:18 AM
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Registered
Join Date: Apr 2004
Location: Philadelphia, pa
Posts: 469
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Gutten tag!
Its nothing fancy. I am just rebuilding the top end of my 69S. It got an S cam which is kind of peaky and I thought I could give more bottom end power while its out. I have rebuilt the tranny, resealed the interface bewteen case and chainbox, camtowers and heads, put in updated the chain tensioners and idler arms, dressed up the engine and engine compartment, put on 2 Weber 40mm IDA 3C, etc. Next winter I will do the bottom of the motor including the case, crank, etc and if I can afford it maybe upgrade to 2.2 from the current 2.0. don ______________________________________ 1963 356B T6 Super 1969 911S 1981 911SC 2001 C320 |
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04-06-2006, 02:27 PM
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