[Railcarmover]

I differ with your conclusions.A rise in readings with a 'wet' compression test indicates piston ring wear.An increase of crankcase pressure from using a higher compression head indicates compression pressure blowing by the rings,verified by the 'bag' test.The increase in rear main leakage may not be a rear main bearing leak,but an oil leak from the pan/bearing area aggravated by higher crankcase pressure caused by compression leaking past the rings..in short,given what you've stated Id say you have bad rings.


Raising compression does not cause accelerated bearing wear..it does show any weakness in rings,valves,deck condition and head stud retention ability.