Hey Rook and Grn14,
I have been reading up on valve cover issues here to educate myself if and when mine leaks. I got 2800 mile on my 2010 14 and hope not have a leak at all. I work in power plants on turbines and also jet engines and all types of machinery. Any time we torque bolts we have to get an engineer to calculate the torque if we use oil or never-seize on the threads... they usually decrease the torque 20% for that..... extensions and universal joints add a percentage.
I did a quick search to see if I could find something in writing but only found a couple things that I attached to this. I wonder if using the universal as you said you did (quote from Rook)" OH SHIT, did I go and strip my threads???? why the fock didn't I listen to Grn?? It was very awkward turning with the extension and the universal joint adapter it requires to get in on that one. Very hard to feel the bolt. It turned about an eighth of a turn (the others were hardly moving at this point, going from 80 to 87 in lbs) FINALLY thank GOD I hear the wrench click.
Just maybe bolt isn`t torqued enough! Just my 2cents also gaskets never get reused in the kingdom of money power plants. Everything gets new gaskets when taken apart. Just trying to help solve the mystery. I cut and pasted stuff below in my brief search on the topic.
question about torque wrenches
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wtfbbq Posted: Dec 11 2005, 10:32 AM Quote
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when using a universal joint extention does the amout of torque you apply to the bolt the same as the amout of torque read from the torque wrench?
some friends at work and i were arguing this, i say no it doesnt change it, its no different than using a strait extention because you really dont change the axis of rotation and the distance the end of the extention travels is the same distance that the point at which torque is read travels
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Schneibster Posted: Dec 11 2005, 10:53 AM Quote
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Actually, there're two problems with using a universal on a torque wrench.
The first is, there's friction in the joints.
The second is, when you apply a force at an angle, you don't get the full force in the original direction; it's a (relatively) complicated formula. Keep in mind where you'd be at if you tried to use it at a right angle: the wrench would "click," but none of the torque would be applied to the bolt, at least not in the direction it turns; the force would all be applied perpendicular to the direction the bolt runs, alright, but not in the direction it turns. If you go look the complicated formula up, it's based on the angle; at such-and-such an angle, you get so-and-so percentage of the torque applied to the wrench applied in the direction the bolt turns, and the rest goes in this other perpendicular direction and doesn't go into tightening the bolt.
So the upshot is, the bolt won't be tight enough if you use a universal.
Trust me, I've had the same argument myself, and we proved it by tightening a bolt with the universal on and bent 45 degrees, and then checking the torque without the universal. I was on the other end of the bet than you are, and I got to drink the brewskis.
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