Posted by NCWayne on May 19, 2012 at 06:54:25 from (69.40.232.132):
In Reply to: Re torque posted by Kenneth R Ohnstad on May 19, 2012 at 03:58:30:
I've built alot of engines over the years and rarely do I retorque the head. With construction equipment, there are many times when it's impossible test run the engine before it's back in the machine do to hydraulic pumps, etc, etc attached to it. Then when the engine is back in the machine and completely assembled you can't get to the head bolts, (((and often can't even get the valve cover off))) because of turbo lines, fuel lines, and pretty much anything else you can think of being in the way. Some engines have so many things in the way once runnable that it would require several hours and another $100 worth of gaskets to disassemble and reassemble to do a retorque. What I have found is always go to the upper end of the torque specs, and always run the torque pattern to full torque at least twice to insure every bolt is staying at the proper torque as the others are getting pulled down compressing the gasket. Like I said, I've built alot of engines and never had a problem with any of the ones that didn't get a retorque after running.
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