The Ford Barn - View Single Post - Is this hole behind my oil pump gear normal?

JWL · 08-05-2021, 04:34 AM

That "hole" prevents pressure potential in the gear case which could lead to serious leakage at the gasket face. If you pressure feed your oiling system and observe the outflow into the lifter galley you will see what that hole is all about.

The fit of the oil pump in the block is not perfect. Some worse than others. Also the pressurized oil escapes through the upper pump bushing of which much goes into the gear case.

08-05-2021, 04:34 AM	#9
JWL Member Emeritus Join Date: May 2010 Location: Fitzgerald, Georgia Posts: 2,204	Re: Is this hole behind my oil pump gear normal? That "hole" prevents pressure potential in the gear case which could lead to serious leakage at the gasket face. If you pressure feed your oiling system and observe the outflow into the lifter galley you will see what that hole is all about. The fit of the oil pump in the block is not perfect. Some worse than others. Also the pressurized oil escapes through the upper pump bushing of which much goes into the gear case.