Yes, if properly put together. However:
On one of my OM603s , some yahoooo (probably at a stealership) put
the intake back on with a 100 ft-lb rattle wrench and locktite. You
would never get that apart with 1/4" stuff. I didn't think it would
come apart with 3/8 without breaking. Only by being very careful I
didn't break the wrenches. I beat on the bolts to try to break loose
the locktite. Still the allen was twisted about 1/6 turn many times
and I would back off. That was probably 60-80 ft-lb.
If you put your thumb around the rachet head, and turn the wrench
about as tight as you can, that is roughly 25 ft-lb, and that is
close enough on the intake manifold bolts. Even tension is more
important than whether they all are 20 or 25 or 28.
NO hylomar or anything else on the gasket. The gasket has a sealer on it.
A 1/4" drive setup is even easier to use - slips right in in the tight
spots.
OK Don
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