Torque value for large plug in S4 head?
#2
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This is going to sound like a preposterous amount of torque, but I once watched Greg torque one of these to 60 ft lbs, with Drei-Bond on the crush ring.
#4
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This might be one of those times where a second opinion is a good idea, but I'm pretty sure I'm remembering the value correctly, and it's a large diameter plug with plenty of thread engagement surface. And you don't want it to leak, given that getting at it again means removing the timing belt and belt covers. I looked around a bit last night and couldn't find that torque value in any of the printed literature. Maybe it exists in the 944 or 968 WSM (?)
#5
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There is nothing about this plug in either WSM (944 or 968). I found this general purpose torque chart online. The sealing ring used for this plug is a C 38 x 44. I assume, that we are dealing with a standard M 38 x 1,5 metric thread. 60 NM with some sealant around the sealing ring will be enough (even less would be OK IMHO). If you compare this to the oil drain plug with a M 20 x 1,5 thread and 50 NM in aluminium, 60 NM is just fine.
#7
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To be honest I like the sound of 44 ft-lbs better too. But then I'm kind of the king of the undertorqued fasteners....