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      10-19-2020, 10:26 AM   #15
amg6975
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Drives: '12 M1.5, '05 ZHP, '98 M3/4/5
Join Date: May 2017
Location: Rochester NY

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Quote:
Originally Posted by AndyW View Post
How does it not affect timing...don't you remove the oil pump and the oil sprocket? How do you get the upper bearing off if you can't get the crankshaft out of the way? I need to watch some YouTube videos...lol.

UPDATE: OK, I think i understand now...the oil pump sprocket remains captured and the chain stays on when you remove the oil pump.

Is there any way to determine the correct replacement bearings to get before opening the engine?
You can move the crank all you want, as long as you don't remove the timing chain you'll just move the cams too and everything stays in time. The oil pump does not run off the timing chain.

From what I remember there are two versions of bearings based on production date. Put your VIN in realoem to get the factory PN your car has. Order accordingly. You may want to plastigauge them to double check everything is correctly gapped.
Appreciate 1
AndyW673.50