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ASE Master
 
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Join Date: May 2008
Location: Lynchburg, VA
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S2 head specs FSM wrong?

I have an S2 head in the machine shop. The FSM states the new thickness is 147mm, and minimum after machining is 146.6mm. This is listed for both the S and S2. My head is measuring 149.8mm. I suspect that the head thickness was changed for the S2, but not documented correctly in the FSM. Can anyone shed light on this?

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1989 944S2 (sold after 11 great years)
1980 911SC Weissach (bucket list car)
1975 914 1.8 (future restoration)
1993 968 Coupe 6 speed (new acquisition)
Old 02-19-2013, 10:57 AM
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what are you having done?
Old 02-19-2013, 11:04 AM
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Quote:
Originally Posted by mueller944s2 View Post
what are you having done?
Valve job. The head needs a light resurfacing. It's nice to know if you are starting with a virgin casting or not.
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1989 944S2 (sold after 11 great years)
1980 911SC Weissach (bucket list car)
1975 914 1.8 (future restoration)
1993 968 Coupe 6 speed (new acquisition)
Old 02-19-2013, 11:14 AM
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Are you sure your measuring from the correct spot? Sounds like you might be measuring from sealing surface for the cam cover, you need to measure from the boss for the bolt.

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Jon
1988 Granite Green 911 3.4L
2005 Arctic Silver 996 GT3
Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1
Old 02-19-2013, 02:10 PM
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Quote:
Originally Posted by Techno Duck View Post
Are you sure your measuring from the correct spot? Sounds like you might be measuring from sealing surface for the cam cover, you need to measure from the boss for the bolt.
Techno, you are a prince among Porschephiles. That solves the mystery. The online version of the FSM I was looking at omitted the photograph, and it's easy to miss just looking at the line drawing. (My FSM is at home, I'm at work)
Thanks!
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1989 944S2 (sold after 11 great years)
1980 911SC Weissach (bucket list car)
1975 914 1.8 (future restoration)
1993 968 Coupe 6 speed (new acquisition)

Last edited by alfadoc; 02-19-2013 at 02:24 PM..
Old 02-19-2013, 02:17 PM
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+1 for techno

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1991 cabriolet (sold)
1989 S2
1988 S
1987 944 n/a (sold)
1987 944 factory yellow (junked )
Old 02-20-2013, 02:18 PM
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