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Old 02-28-2005, 05:33 PM
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Don Moyer Don Moyer is offline
 
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Brad,

The best time to evaluate your oil pressure is when the engine is fully warmed up and at your favorite cruising power setting. The oil pressure should then stabilize between 35 and 40 psi. When you retard the throttle to idle, the pressure will usually stay at 20 psi or above, although Universal allowed a minimum pressure at idle of 10 psi.

Your question regarding oil level in the bottom of the accessory drive is a bit more complicated. Any time the engine is running, the accessory drive is receiving oil through a small "splash basin" built into the front of the main accessory drive housing. The oil level reaches a return drain hole in the forward face of the housing, which maintains a level within the accessory drive that just barely reaches over the bottom of the distributor drive gear, and at a level that is difficult to see when looking down into the distributor mounting hole.

During our rebuilding process at MMI, we plug the original drain hole and provide one that is approximately 1/2" higher than the original. (See our tech tip for more details of this modification.)

Best regards,
Don Moyer

Last edited by Don Moyer; 02-28-2005 at 05:38 PM.