I'm experiencing the knock from hell in my 300SD. Almost has to be the crankshaft bearings, hopefully not a seriously damaged crank as well.

I've only had a couple of different types of engines out in my life (the Saab V-4 about 9 times) and the only one I rebuilt was the Saab.

What do you think? Is pulling the engine just to get the crank out a worthy endeavor? Am I going to need bou-coups special tools?

The engine is strong in all other depts. and felt strong before the knock went terminal. I'd like to save this car, I mean dang, I'd just found and installed front seats in excellent shape, same color, the hard to find dark brown, a couple of months before this happened. Got 'em off a low miles, totaled '89 560 SEL. I mean, of course I've got to keep this car running now.

**EDIT** Uhhh... beaucoup is actually spelled beaucoup. French for mucho mas.

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Te futueo et caballum tuum

1986 300SDL, 362K
1984 300D, 138K