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Std. Volume Oil Pump or High Volume?
#1102314
10/27/11 02:02 AM
10/27/11 02:02 AM
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Joined: Oct 2006
Posts: 1,264
New York, USA
Chargerfan68
OP
pro stock
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OP
pro stock
Joined: Oct 2006
Posts: 1,264
New York, USA
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I am building a 383 stock stroke engine to be used with Edelbrock Rpm heads and 10.2:1 with the MP 509 stick. I just checked the Main clearances and they are between .0027-.0029". I haven't done the rods yet. If the rods are similar clearances, should I run the High Volume Pump or the standard volume?? My machinist said if the clearances come out to .0015 - .0025", then I should use the std volume. If they come out to .003 - .0035", use a high volume pump. This is in the middle of those ranges. What do you all suggest. If I go with the high volume, I would go with the 6 qt. pan and pickup...if it is the std. pump, then standard 5 quart pan. Thanks for any input, Greg  
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: Std. Volume Oil Pump or High Volume?
[Re: Chargerfan68]
#1102315
10/27/11 03:02 AM
10/27/11 03:02 AM
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Joined: Aug 2003
Posts: 43,190
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,190
Bend,OR USA
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Use both the bigger oil pan, correct pickup and high volume pump, cut the bypass spring to set the oil pressure to 10 lbs per thousand RPM, IE 6500 RPM = 65 lbs hot  I would and do use a cranksahft scraper, you can make your own I shoot for .030 to .060 clearances between the scraper and any rotating part, closer is better than looser 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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qqRe: Std. Volume Oil Puimp or High Volume?
[Re: Chargerfan68]
#1102317
10/28/11 01:57 PM
10/28/11 01:57 PM
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Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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How do you intend to use this car?
What weight oil will you be running?
Wait and see where those rod journals end up.
So far i see no reason to run either hi volume or high pressure, until we get a few more answers.
I WOULD run the 6 qt Hemi pan regardless
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: qqRe: Std. Volume Oil Puimp or High Volume?
[Re: CompWedgeEngines]
#1102318
10/28/11 03:24 PM
10/28/11 03:24 PM
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Joined: Jan 2003
Posts: 16,925
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,925
NC
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Quote:
How do you intend to use this car?
What weight oil will you be running?
Wait and see where those rod journals end up.
So far i see no reason to run either hi volume or high pressure, until we get a few more answers.
I WOULD run the 6 qt Hemi pan regardless
And I couldn't have said it better.
Things for a high volume pump:
- larger bearing clearances
- full groove main bearings
- street driving (hotter oil, >180F)
- low idle speeds (800 rpm)
Things for a std volume pump:
- smaller bearing clearances
- drag race only (oil never gets hot, <180F)
- high idle speed (1200 rpm)
I have run both in my drag only engine. I used a relief spring to give me 70 psi going down the track. IMO, 50-70 is fine (>2000 rpm) and I like idle no lower than 20 psi, but that is just my preference.
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Re: qqRe: Std. Volume Oil Puimp or High Volume?
[Re: 440Jim]
#1102319
10/28/11 03:37 PM
10/28/11 03:37 PM
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Joined: Nov 2004
Posts: 2,825
Sk. Canada
RemCharger
master
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master
Joined: Nov 2004
Posts: 2,825
Sk. Canada
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Jim's the man. I researched the tech info, and with Jim's high level of R&D, I went with a std vol. pump and put the spring out of my old pump(hp) in my 383. Even with the non restricted 440-1s the pressure stays at 55-60 , and drops to 45ish hot,hot idled down (900?). This was with generic 15/40 diesel oil. I also run a BIG pan and crank scraper, stock pickup, 7000+ rpm.
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Re: qqRe: Std. Volume Oil Puimp or High Volume?
[Re: RemCharger]
#1102320
10/28/11 08:01 PM
10/28/11 08:01 PM
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Joined: Jan 2003
Posts: 9,875
Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,875
Weddington, N.C.
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for up to around 7000 I generally prefer to run a ported stock pump opening up the suction and discharge lines to 1/2" or 17/32", a nice chamfer on the right angle turn in the inlet passage of the pump head increases the available flow significantly and reduces the pressure drop across the sharp turn, these mods result in a less obstructed, smoother oil delivery to the discharge side....even with the stock size rotor. I've been doing this mod on BB/Hemis for nearly 30 yrs. I never understood the point in running a 1/2" sump pick up and leaving the standard 3/8"-ish pump inlet passages (and it's the same casting/piece for both a std and HV pump) alone. 
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Re: qqRe: Std. Volume Oil Puimp or High Volume?
[Re: Streetwize]
#1102321
10/28/11 08:45 PM
10/28/11 08:45 PM
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Joined: Oct 2005
Posts: 8,872
Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,872
Ontario, Canada
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Quote:
I never understood the point in running a 1/2" sump pick up and leaving the standard 3/8"-ish pump inlet passages (and it's the same casting/piece for both a std and HV pump) alone.
So running a dual line external pickup must really have you scratching your head !!!!!
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Re: qqRe: Std. Volume Oil Puimp or High Volume?
[Re: 5126brl No more]
#1102328
10/29/11 03:08 PM
10/29/11 03:08 PM
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Joined: Oct 2006
Posts: 1,264
New York, USA
Chargerfan68
OP
pro stock
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OP
pro stock
Joined: Oct 2006
Posts: 1,264
New York, USA
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Thanks for all the replies, guys. This is a street only motor, but the guy that owns it is a maniac on the street. It will definitely see about 6500 rpms and will be driven hard its entire life. It is a stick.
This guy owns a gas station and did 360's around his gas pumps.
The rod clearances just came out to .00265". I do intent to install the 6 quart pan on it for him. I just need to figure out the pump design and oil weight.
Thanks again.
Last edited by Chargerfan68; 10/29/11 06:17 PM.
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Re: qqRe: Std. Volume Oil Puimp or High Volume?
[Re: Performance Only]
#1102331
10/29/11 06:28 PM
10/29/11 06:28 PM
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Joined: Oct 2006
Posts: 1,264
New York, USA
Chargerfan68
OP
pro stock
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OP
pro stock
Joined: Oct 2006
Posts: 1,264
New York, USA
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I get the general consensus that the high vol. pump is the way to go with this setup. Thanks for the info.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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