oil pump
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I ♥ Acer
Joined: May 2006
Posts: 1,845
From:
oil pump
i am building new 302 and i dunno what oil pump to get cause a high volume one is that same price as a stock on or should i go with a high pressure i do alot of highway driving and alot of short trips
Joined: Aug 2006
Posts: 45
RE: oil pump
I'll tell you what you should do.
Take your old pump and the hex drive and stick the pickup in a bucket of oil. With the drive shaft inserted twist the shaft until the oil flows. Now imagine the shaft spinning at engine speed.
After doing this if you still think you need a new pump buy a high volume pump.
I have never seen a rotor oil pump that I would spend my own money to replace.
Take your old pump and the hex drive and stick the pickup in a bucket of oil. With the drive shaft inserted twist the shaft until the oil flows. Now imagine the shaft spinning at engine speed.
After doing this if you still think you need a new pump buy a high volume pump.
I have never seen a rotor oil pump that I would spend my own money to replace.
5th Gear Member
Joined: Jun 2006
Posts: 4,089
From:
RE: oil pump
Get a pump that can output 10 psi for every 1k rpm you plan on running with the engine. If you're building a 7k rpm engine, get a high volume pump with a 70-80 psi bypass valve. If you're building a 5k rpm engine, get a pump with a 50-60 psi valve. Volume is good, but pressure can be unnecessary. Keep in mind that ultra high pressure pumps can wash out cheap bearings. There may be some shops that can still set the bypass where you need it, but you may need some luck or know the right people to find one.
And, whatever you do, be sure your pump is NEW (or rebuilt). For $30, I wouldn't dream of risking my $3k engine. You may as well bypass the oil filter...
And, whatever you do, be sure your pump is NEW (or rebuilt). For $30, I wouldn't dream of risking my $3k engine. You may as well bypass the oil filter...
5th Gear Member
Joined: May 2005
Posts: 2,445
From:
RE: oil pump
(IMO)
High volume and high pressure pumps are only needed under certain applications. Otherwise a good quality stock pump is the best choice. Race engines are built with excessive tolerances so as to reduce friction, that is why they require the higher volume and pressures. Any street driven engine should be built to factory specs which requires nothing greater than a stock pump.
Remember the higher the volume and or pressure, the more horse power it takes to turn the pump. Why throw away good useable power.
If you are planning to run consistently above 5,000 rpms, are adding forced induction, or a 100HP+ shot Nitrous setup, then a high volume pump would be a good idea. Otherwise, blue print a good stock pump and put the power to the rear tires.
Scott
High volume and high pressure pumps are only needed under certain applications. Otherwise a good quality stock pump is the best choice. Race engines are built with excessive tolerances so as to reduce friction, that is why they require the higher volume and pressures. Any street driven engine should be built to factory specs which requires nothing greater than a stock pump.
Remember the higher the volume and or pressure, the more horse power it takes to turn the pump. Why throw away good useable power.
If you are planning to run consistently above 5,000 rpms, are adding forced induction, or a 100HP+ shot Nitrous setup, then a high volume pump would be a good idea. Otherwise, blue print a good stock pump and put the power to the rear tires.
Scott
I ♥ Acer
Joined: Oct 2004
Posts: 17,565
From:
RE: oil pump
ORIGINAL: Scott H.
(IMO)
High volume and high pressure pumps are only needed under certain applications. Otherwise a good quality stock pump is the best choice. Race engines are built with excessive tolerances so as to reduce friction, that is why they require the higher volume and pressures. Any street driven engine should be built to factory specs which requires nothing greater than a stock pump.
Remember the higher the volume and or pressure, the more horse power it takes to turn the pump. Why throw away good useable power.
If you are planning to run consistently above 5,000 rpms, are adding forced induction, or a 100HP+ shot Nitrous setup, then a high volume pump would be a good idea. Otherwise, blue print a good stock pump and put the power to the rear tires.
Scott
(IMO)
High volume and high pressure pumps are only needed under certain applications. Otherwise a good quality stock pump is the best choice. Race engines are built with excessive tolerances so as to reduce friction, that is why they require the higher volume and pressures. Any street driven engine should be built to factory specs which requires nothing greater than a stock pump.
Remember the higher the volume and or pressure, the more horse power it takes to turn the pump. Why throw away good useable power.
If you are planning to run consistently above 5,000 rpms, are adding forced induction, or a 100HP+ shot Nitrous setup, then a high volume pump would be a good idea. Otherwise, blue print a good stock pump and put the power to the rear tires.
Scott
5th Gear Member
Joined: Dec 2005
Posts: 2,634
From: SC
RE: oil pump
Well said Scott.. I got my high volume pump for a few reasons. Now with the new engine I'm running 8 qt's of oil and I plan on installing a remote oil cooler with a dual filter setup down the road.
ORIGINAL: Scott H.
(IMO)
High volume and high pressure pumps are only needed under certain applications. Otherwise a good quality stock pump is the best choice. Race engines are built with excessive tolerances so as to reduce friction, that is why they require the higher volume and pressures. Any street driven engine should be built to factory specs which requires nothing greater than a stock pump.
Remember the higher the volume and or pressure, the more horse power it takes to turn the pump. Why throw away good useable power.
If you are planning to run consistently above 5,000 rpms, are adding forced induction, or a 100HP+ shot Nitrous setup, then a high volume pump would be a good idea. Otherwise, blue print a good stock pump and put the power to the rear tires.
Scott
(IMO)
High volume and high pressure pumps are only needed under certain applications. Otherwise a good quality stock pump is the best choice. Race engines are built with excessive tolerances so as to reduce friction, that is why they require the higher volume and pressures. Any street driven engine should be built to factory specs which requires nothing greater than a stock pump.
Remember the higher the volume and or pressure, the more horse power it takes to turn the pump. Why throw away good useable power.
If you are planning to run consistently above 5,000 rpms, are adding forced induction, or a 100HP+ shot Nitrous setup, then a high volume pump would be a good idea. Otherwise, blue print a good stock pump and put the power to the rear tires.
Scott
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