Did inframe rebuild of 310 B backhoe in fall at 3200 hrs. New cylinder sleeves, pistons, rings. Head completely rebuilt with all new valves. Currently having lots of blowby, consuming 1 quart of oil per week with heavy use. High pressure causing oil pan to leak. (hrs now at 3326, or only 114 hrs.)
Did compression test. Cyl 1 300 psi, 2 @280, 3 @ 280, 4 @ 260 (manual says 350 for all, but all within 50 psi).
One wise mechanic says it just needs more break-in time. Been running that sucker hard, digging rocks and stumps from my new building site, I should say major boulders, as the glacier has blessed us with tractor size obstacles everywhere.
Thoughts? Really feel something is amiss.
Did compression test. Cyl 1 300 psi, 2 @280, 3 @ 280, 4 @ 260 (manual says 350 for all, but all within 50 psi).
One wise mechanic says it just needs more break-in time. Been running that sucker hard, digging rocks and stumps from my new building site, I should say major boulders, as the glacier has blessed us with tractor size obstacles everywhere.
Thoughts? Really feel something is amiss.