BB oil pump gear design.

66Satellite47 said:

I mostly used the TRW high volume pumps in my bracket motors, I went with the Milodon dual external pump in my tube Arrow. The Milodon had different shaped rotors. Seems like the Melling has the same shape as the TRW. I agree with Doug, lots more things to consider in the oil system. Bearing clearance, rod side clearance mainly.

Click to expand...

Melling definitely has MoPar style rounded gear lobes (at least all of the many that I have used). All TRW gears are not the spikey "Ford style" gears, I found out. I'm not trying to find the Holy Grail here, just hoping to get some benefit from the different gears. Somehow Milodon felt it was an advantage for their high-end pump, and I wanted to know why. To know for sure, I'd just have to try these gears myself and see, back-to-back on a known-quantity (hot idle/revving oil pressure, etc.) engine, compared to a standard M-63 or M-63HV. I wouldn't forsake my favorite HV unless things remained constant with the TRW gears and the standard M-63 was less.

Well I suppose ... if you've got nothing better to do. That'd be the last damn thing I'd ever bother with though.

Stanton said:

Well I suppose ... if you've got nothing better to do. That'd be the last damn thing I'd ever bother with though.

Click to expand...

The devil's in the details. We could be arguing about engine paint colors just as easily.

which one pulses less and bounces your timing and gears round
which one takes the least hp to turn

Well before I went to all the hassle I'd phone or ask someone like Ray Barton or Tim Banning or some other BB Mopar guru.

Just wondering if any one of you guys would want to sell one of those old kits that use the plate or know where I can still get one