Re: Torque settings for the heads - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: Torque settings for the heads
Posted by Anders (more from Anders) on Sun, 21 Apr 2002 11:44:53
In Reply to: Torque settings for the heads, SLAAB
[Profile/Gallery]
, Sun, 21 Apr 2002 10:33:25
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It depends on if you have the old or new style headbolts.
Pull one bolt out and look at the shape of it.
Both of them have the E16 torx head but the new style have a loose washer and is threaded almost all the way with a little waist in the threading.
Old style have no loose washer but a flange head instead and the threads are only about half of the bolt.
Old style torque. First stage 60Nm, second stage 80Nm, third stage 90 degree.
New style torque. First stage 40Nm, second stage 60Nm, third stage 90 degree.
Saab seems to have had problems with the head gasket leaking and I suspect it being the result of the new bolts that are not even close to the strenght of the old ones.
Saab lowered the torque specs for the new ones, which also don't make sense, more than it allows the bolt not to break when tigthening.
At 80K miles though, I wouldn't mess around with retorquing the bolt, I would go with new gasket, or not disturb it at all.
posted by 24.126.8...
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