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Oil Pump?
Posted: May 24th, 2012, 3:47 pm
by EVIL95XJ
high volume or not?
Re: Oil Pump?
Posted: May 24th, 2012, 4:55 pm
by 604rail_king
it really comes down to personal preference (or budget) as both work fine.
from what i gathered when researching, many went with the High Volume Melling for a few key reasons. i went with the HV also (yet to be installed). it does require you to massage the pan though.
Re: Oil Pump?
Posted: May 24th, 2012, 5:50 pm
by EVIL95XJ
no real pros or cons besides the pan?
Re: Oil Pump?
Posted: May 24th, 2012, 6:03 pm
by Muad'Dib
No need for the HV unless you plan on running loose bearing clearances.
Re: Oil Pump?
Posted: May 24th, 2012, 7:09 pm
by IH 392
Muad'Dib wrote:No need for the HV unless you plan on running loose bearing clearances.
YEP!, if your clearances are correct there is NO need for an oil heater pump!
Re: Oil Pump?
Posted: May 25th, 2012, 5:22 am
by cruiser54
Know where the HV oil pump came from? It wasn't developed for any particular high performance applications. According to my buddy at JeepTech, it was a military specified pump for some 4.0s that the military used in certain applications and that had a different oil pan. I use them.
Re: Oil Pump?
Posted: May 25th, 2012, 7:13 am
by SilverXJ
Different oil pan? Does he know what was different about them?
The Mopar stroker comes with a HV pump for some reason.
Re: Oil Pump?
Posted: May 25th, 2012, 2:28 pm
by cruiser54
SilverXJ wrote:Different oil pan? Does he know what was different about them?
Actually straighter cut gears than stock and obviously a bit longer gears. The stock pump has barely discernable angle to the gears.
The Mopar stroker comes with a HV pump for some reason.
Re: Oil Pump?
Posted: May 25th, 2012, 2:42 pm
by SilverXJ
cruiser54 wrote:Actually straighter cut gears than stock and obviously a bit longer gears. The stock pump has barely discernable angle to the gears.
I was asking about the oil pan.
Re: Oil Pump?
Posted: May 25th, 2012, 7:51 pm
by cruiser54
Who knows what the engines were in. Maybe they didn't need to clear a front axle.
Re: Oil Pump?
Posted: May 25th, 2012, 8:08 pm
by SilverXJ
I would assume it was a Jeep, most likely a XJ or TJ.
Re: Oil Pump?
Posted: May 26th, 2012, 4:44 am
by cruiser54
I'll ask him when I get a chance. For some reason I seem to think it was some kind of equipment power plant.
Re: Oil Pump?
Posted: May 26th, 2012, 6:44 am
by Cheromaniac
604rail_king wrote:it really comes down to personal preference (or budget) as both work fine.
from what i gathered when researching, many went with the High Volume Melling for a few key reasons. i went with the HV also (yet to be installed). it does require you to massage the pan though.
What he said. A HV oil pump isn't really necessary unless you have loose bearing clearances but if you do use one anyway, just make sure your cold start oil pressure isn't above 60psi otherwise you could accelerate distributor gear wear. If necessary use a thinner grade of oil.
Re: Oil Pump?
Posted: May 26th, 2012, 7:32 pm
by cruiser54
My oil pressure is not particularly high at all. Same as my Comanche with stock oil pump.