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Registered
Join Date: May 2004
Location: Boulder, Colorado
Posts: 7,275
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964 Cam setting
What is the overlap valve opening spec for timing these cams?
Is this what one would use if installing this cam in an SC or 3.2? |
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08-03-2013, 08:21 PM
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Registered
Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
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1.26mm
This is the spec sheet that came with my 964 grind #40 from WebCam. Hope it's of some help. 
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08-03-2013, 08:38 PM
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Sorry for breaking in here... what is "grind #40"? Are there different 964 profile details?
I am about to do the same thing as Walt. |
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08-03-2013, 08:45 PM
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Registered
Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
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Grind # 40 is WebCam's 964 cam grind. It's the same profile as a stock 964 cam.
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08-04-2013, 06:57 AM
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Registered
Join Date: Jul 2008
Location: Spokane WA
Posts: 585
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I used 1.8 per Daugherty Racing Cams recommendation on my 3.2 with stock pistons and 964 cams.
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08-04-2013, 08:00 PM
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Registered
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1.8 as well on an 83 SC. Stock pistons.
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08-04-2013, 09:28 PM
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Registered User
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what if one had an SC with non-stock (Euro) pistons and used the 964?
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08-04-2013, 10:14 PM
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Registered
Join Date: Jul 2006
Location: S. Florida
Posts: 7,249
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Setting cam timing so an intake valve is open 1.8mm at TDC overlap before the intake stroke with valve lash at .004" would be advancing cam timing a little from stock 964 settings and that should make a little better lower to midrange torque and probably take away a little top end power.
I'm no expert but thats how I understand it. |
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08-05-2013, 04:00 PM
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Registered
Join Date: Jan 2006
Location: Clayton NC
Posts: 1,674
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A friend did 2.00 with 964 cams and JE pistons.
__________________
gary 70T coupe forever almost done 88 Carrera Targa diamond blue |
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08-24-2013, 08:58 AM
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P911
