[Tigers] Oil Pressure & Rear Main Leak Question

[Dave Munroe]

Mark's comments are true to my experience.

When my stroker engine was built in '05 I had a high-volume Melling oil pump installed to protect my SCAT balanced rotating assembly and other high dollar parts.

But on start-up the pressure guage was only indicating 45psi cold and 20psi hot at idle.

8,000 miles and 5 years later, I had the engine removed and blueprinted to correct some other problems, and from advice on this list I had the hi-vo oil pump replaced with a Melling stock pump. On the dyno the engine was now indicating 70+psi on start-up and over 75 at redline.

The engine is now back in the car, and this morning on start-up on the in-dash guage it was reading........yes - 45psi. So there is obviously something wrong with the guage or something else in the oiling system.

For ex: on the dyno we did not hook up the remote filter system, but instead installed a large filter directly to the block.

I will first try by-passing the remote filter, and if there is no change, I will try another guage. Other than that, I am stumped.

BTW, on disassembly and dimemsion checking, the crank, rod and main bearings were well within "new" tolerance, and looked perfect. This after approx 8,000 miles of running on what I thought was low oil pressure.

I will appreciate any comments or observations...

Tks

Dave

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