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Re: Torque For Head Bolts and More (archive)
[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]
Posted by Jim Baron on November 20, 2000 at 11:16:11:

In Reply to: Torque For Head Bolts and More posted by Dan in BFL on November 19, 2000 at 01:44:03:

These torque by degrees of turning rather than ft/lbs or newton/meters specs are given when the head bolts are of the "torque-to-yield" type used in modern assembly line situations where the head bolts are all torqued at once by a robot.

1. You MUST get new head bolts rather than reuse the old ones or risk serious problems after reassembly.

2. I've successfully done quite a few of these with a simple arrangement made by fitting a plastic protractor to a short extension on a 1/2 drive breaker bar, but you must be within 5% or less of dead on specifications -- I recommend that you go to a serious mechanic's tool store and study one of the protractor-equiped torque wrenches in person and then decide whether you want to pay the price for the real thing or try to improvise your own. When in doubt, pay the price!

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