Oil Pump????

[HammerDown]

Hi Volume or standard??? Mellings # M77HV. It comes with my new Milodon Jet oil Pan.
I belive my Crank Clearances were 2.50 and I prefer straight wt 40 oil.
Thanks for any input...

[Blown 472]

For what is it worth, I bought a mildon set up and the oil pressure was the same no matter what, cold or hot engine, I ripped it out and looked at it and called mildon and they said that is normal, not in there anymore after smoking a bearing it lost it's life and ended up in the broken parts box.

[GofastRacer]

I've always used a standard pump, never found any benefit to a high volume one. It just takes more power to operate. You can only push so much oil through the passages. All I do is blueprint it and shim the spring for more pressure, full throttle is at least 70 lbs with 40wt!.

[HammerDown]

Blown 472:
For what is it worth, I bought a mildon set up and the oil pressure was the same no matter what, cold or hot engine, I ripped it out and looked at it and called mildon and they said that is normal, not in there anymore after smoking a bearing it lost it's life and ended up in the broken parts box. $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
Just wondering, when you say you bought a "Milodon setup"...was that the Pan with the Mellings High Volume pump W/ pick-up? Or just the Pan?
I wonder why the oil psi would be the same cold or hot. How about Idle vs higher rpm's psi? Also I'm wondering why a cooked bearing with all that psi?
The pan I'm looking to get is a Miloden #31557 comes with a Mellings M77HV and the pick/up, I don't know if I can swap it out with the standard "M77" pump.
And true I don't see any issues with my standard pump...just looking for any pro/con's with the Hi-Volume one.
Thanks for your input...

[Blown 472]

I bought the pump, pan, and pick up. I dont know why the same psi all the time, it was 60 psi hot or cold, checked the bypass spring and it all seemed to move fine, I put a stock cj pump in it now and will see what happens.

[HammerDown]

Intresting...I've come to find that all Mercruiser motors come with Mellings # M77HV (high Volume) pumps. And also that Melling makes ALL and everyones pumps out there, even GM's.
At least thats what I was told.
The above came from FlatLander Racing...I'll be calling Melling's Monday. I tend to be a educated consumer....for some things

[LeE ss13]

GofastRacer:
I've always used a standard pump, never found any benefit to a high volume one. It just takes more power to operate. You can only push so much oil through the passages. All I do is blueprint it and shim the spring for more pressure, full throttle is at least 70 lbs with 40wt!. Art !!!! I thought I was the only racer on the planet (besides my late father) that did that !!! And I run 30wt. What I like about a standard pump is that if the oil pressure is any different when you first start it up, then somethings wrong. With a High Volume, the crank can be ground down .010" and the pressure will still be high. And you're right ...why waste the HP turning it.

[Fiat48]

Bill "Grumpy" Jenkins did you guys one better. He ran small block oil pumps rather than big block pumps.

[Infomaniac]

Too much oil pressure and too much valve spring tension are both big wastes of HP.

[slotracer]

i am putting a 454 back together and was wondering how do you blue print a pump?
any help would be great. thanks
pat(slotracer)