mjr46

Hey I have a melling high volume oil pump I've always used these with my 7 qt moroso pan, anyone use them with a stock pan??? 5 qt. If so do you have any problem with it pumping dry on high rpm/ hard runs??

rcdblink716

I've heard they will suck a 4 or 5 quart pan dry. The high volume pump isn't really necessary unless ur running real loose tolerances or high revs. I run one with a 8 qt pan

mjr46

yeah I've heard the same. I just have a new one and wanted to put it to use without spending more money.

rcdblink716

It doesn't make a whole lot of sense putting an oil pump on a motor that doesn't need it especially a high volume cause all it's going to do is cost u hp. And none of us wanna give that up haha. I'm not sure how u would know if ur sucking it dry except for a pressure drop. Personally, I wouldn't risk it.

my77stang

a high pressure pump > a high volume pump

(melling # M68A)

rcdblink716

high pressure is not better, it's just got a stronger spring in the pressure relief mechanism in order to make increased pressure. High volume is better but only required if u run loose tolerances

OnyxCobra

I run a melling high volume oil pump with the stock 5qt pan, so far it's worked beautifully. Only thing for install is you have to switch one of the bolts on the bottom of the pump so it doesn't dent the pan.