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Registered
Join Date: Oct 2006
Location: Paso Robles, CA
Posts: 376
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3.6l Oil relief valve cap torque
Rebuilding a 1992 964 3.6l and installing the Oil pressure relief valve cap I torqued it down to it's spec (44 ft-lb), but the aluminum washer got completely deformed (see picture below). Is this correct? The original old washers were not deformed at all? 44 ft-lb seems like a lot for this bolt, but I looked up the torque spec in several locations and they all verify. It doesn't feel right....
 Please advise Emerson
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1981 911sc RoW Coupe (forever under 3.6L conversion) 2003 996TT Basalt black |
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03-06-2012, 05:18 PM
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Schleprock
Join Date: Sep 2000
Location: Frankfort IL USA
Posts: 16,639
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I think it's a typo. The fitting needs to be snug enough to indent the seal ring but not mangle it.
Check your seal ring material by using the old seal ring and tightening it to 44. If it mushes that one too, you know it's too high.
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Kevin L '86 Carrera "Larry" |
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03-07-2012, 07:13 AM
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Registered
Join Date: May 2004
Location: Boulder, Colorado
Posts: 7,275
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Wayne gives about 44 for the earlier motors, and it is the same plug thread. The later plugs take a regular socket, which is nice and allows tightening and removing to go smoothly. The older screwdriver slot plugs usually end up being turned with a pipe wrench. I don't recall ever actually torquing these, and have not had one fall out.
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03-08-2012, 10:05 PM
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