high volume oil pump with stock oil pan???
#1
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hey guys, I haved searched for this answer but had no luck!!
I have been hearing different things from different people...
Is it alright to run a melling hv oil pump with the stock oil pan, Or do i need to run a aftermarket oil pan that holds more oil?
I have been hearing different things from different people...
Is it alright to run a melling hv oil pump with the stock oil pan, Or do i need to run a aftermarket oil pan that holds more oil?
#4
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Most often, there is absolutely no reason to run an HV pump on an LT1.
Those that run stock pans are at risk. All it takes is one time to starve the pump and your bearings are toast. It may not have happened yet, but it certainly can.
Those that run stock pans are at risk. All it takes is one time to starve the pump and your bearings are toast. It may not have happened yet, but it certainly can.
#5
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you'll be fine with the stock pan and HV pump. Theres only like millions of small block chevy's that have high volume pumps and stock pans. But unless your running more than .0025 of bearing clearance, then there is no need for a high volume pump. Robs more power to turn a HV than a SV pump. Just make sure the pickup screen is no less than an 1/8" from the bottom and no more than 3/8. I'm pretty sure you wont have any problems if you do that. And put a tack weld on the screen where it goes in the pump.
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I've done enough of these to know for certain that you can have problems with high volume pumps & the stock pan. Do so at your own risk. Been there done that & will not do it again.
Buy a quality std volume pump & use the high pressure spring. This is what you should use & will suit most of the motors out there.
Buy a quality std volume pump & use the high pressure spring. This is what you should use & will suit most of the motors out there.
#7
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I've done enough of these to know for certain that you can have problems with high volume pumps & the stock pan. Do so at your own risk. Been there done that & will not do it again.
Buy a quality std volume pump & use the high pressure spring. This is what you should use & will suit most of the motors out there.
Buy a quality std volume pump & use the high pressure spring. This is what you should use & will suit most of the motors out there.
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Here check out this site read the 5th Q down it should answer your Q.
http://www.badasscars.com/index.cfm/...=cat/cat13.htm
http://www.badasscars.com/index.cfm/...=cat/cat13.htm
#10
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Here check out this site read the 5th Q down it should answer your Q.
http://www.badasscars.com/index.cfm/...=cat/cat13.htm
http://www.badasscars.com/index.cfm/...=cat/cat13.htm
As already noted, it can rob HP, plus oil pump drive gear wear is accelerated. When the gear strips, what happens? Right. You're back to no oil pressure again. You can still end up with a trashed engine. I can't tell you how many threads I have read of people doing maintenance on their HV pumped LT1 and found their oil pump drive gear almost stripped. They considered themselves real lucky to have found it.
I know that there are plenty of SBCs out there with HV pumps, but for some reason the LT1 seems to be especially susceptible to problems with it.
A good stock pump with high pressure spring is all you should ever need. One supported over 1100HP in a drag car.
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#14
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Sure, until the day that it doesn't.
Aside from the risk, why rob yourself of HP? People will do all kinds of stuff to gain the smallest amount of HP, then lose it with an HV pump that, in most cases, is not even needed.
Just choose wisely, is all I am saying.
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Aside from the risk, why rob yourself of HP? People will do all kinds of stuff to gain the smallest amount of HP, then lose it with an HV pump that, in most cases, is not even needed.
Just choose wisely, is all I am saying.
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I've been running a Meiling hv pump with a stock style pan for a while now. The added pressure is good in my case because I have a oil cooler/radiator and about 8ft of hoses which keeps my pressure a bit above 40 psi. Also my engine builder recommended it !
#17
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There are good and not so good engine builders out there. People sometimes think if SV is ok, then HV must be better (simply, not always the case). This is one of those never ending debates.
I would hate to be scared about my oil pressure every time I wrung the engine out.
I would hate to be scared about my oil pressure every time I wrung the engine out.
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Years back I also believed in HV pumps, (I was taught this by old time engine builders that subscribed to this theory) but after further experience I found them to not be necessary. The latest designs of elliptical bearings, friction coatings & tighter clearances, I rarely see the need for them. I've lived through oil filters spitting their gaskets in cold weather & distributor gears wearing out to realize it is not necessary unless you truely have race only bearing clearances or something on the order of piston oil cooling or spring oilers to actually warrant the extra consumption. In these cases, only consider them with the proper baffled, high capacity pan.
Even the racers have learned to run as little oil pressure as possible with the thinnest oil to gain the last few HP. Ive seen race engines go down the strip with 35# pressure on 0W-30 oil.... not that I would recommend this on your street ride though.
Even the racers have learned to run as little oil pressure as possible with the thinnest oil to gain the last few HP. Ive seen race engines go down the strip with 35# pressure on 0W-30 oil.... not that I would recommend this on your street ride though.