Re: HiVolume-or- Hi pressure oil pump
 

Doing good and watching the weather forcast for the weekend :drink:

I was told the same thing as Strip, I have a melling hi-volume pump set at 72psi bypass, with the v-twin oil I never see less than 40psi even at 260* oil temp. Cold, it pegs at 80psi, so I run real easy until I see some oil temp.

Re: HiVolume-or- Hi pressure oil pump
 

I Remeber We Had That Oil Discussion Before, I Am Going To Run It This Time....i Am At Home Waiting For My Jessel Stuff To Show Up So I Can Put The Motor Together And Get It Back In The Boat.........


Our Weather Sucks Up Her But Nice Weekend Coming

Re: HiVolume-or- Hi pressure oil pump
 

I am see alot less oil pressure when hot, but I am running high bearing clear,and straight 40 Val racing oil. I am sure the syn would help,but its not showing any signs of a prob at 7.5psi after I tore it down this past winter.we will see what happens at 9 :eek:

Re: HiVolume-or- Hi pressure oil pump
 

Std Volume oil pump. . .shim the spring .125". No issues.

Re: HiVolume-or- Hi pressure oil pump
 

Now Chris we cant leave a stock pump alone ,atleast bebur inside ,cut the anticavatation groves in it,ck the height and I even sand down the casting lines on the outside :rolleyes: :drink:

Re: HiVolume-or- Hi pressure oil pump
 

HV pumps, 50W racing oil. 90 psi WOT cold, 80 psi hot and 50-60 @ idle.

Some may say it's high but I don't mind! :cool:

Re: HiVolume-or- Hi pressure oil pump
 

My concern about high oil pressure (not confirmed) is that this would throw off the differential bypass in the gen5/6 blocks (the 30psi spring if installed) causing more oil to bypass the cooler.

Likewise it may cause the filter to bypass more at cold start up.

Don't know if these concerns are valid, just wondering.

My gen 4 has the filter pad adapter bypass plugged so that I know all the oil goes to the cooler and remote filter.

Re: HiVolume-or- Hi pressure oil pump
 

I don't have a bypass.