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I recommend to have it checked out. Posted by SWEDECAR [Email] (#112) [Profile/Gallery] (more from SWEDECAR) on Sat, 10 Jul 2004 09:21:41 In Reply to: Headbolt retorque question, Tom, Fri, 9 Jul 2004 22:01:51 Members do not see ads below this line. - Help Keep This Site Online - Signup |
After lifting the valve cover on several cars and checking the head bolts I strongly recommend that everyone have it checked out. So far none of the cars have had the bolts torqued properly.
Some bolts are so loose that I'm amazed the car ran at all. I checked with my torque wrench and some bolts comes loose with about 50Nm (37 lbf-ft) torque. Proper tightening torque when retorqueing is 60Nm (44 lbf-ft) PLUS! 90 degree.
Not all 10 bolts have the same low torque when checking so I wonder how it could go so wrong at the automated plant when putting the engines together. Or if it is that the quality of the bolt itself is bad allowing different bolts to stretch in different ways?
I also wonder if this could be a reason for the oil sludge problem that we're seeing.
Having a loose cylinder head gasket may allow both combustion gasses, coolant and oil to mix in small quantities, maybe creating the crystal like sludge?
Anders
posted by 67.122.161...
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