Advanced Tech Advanced tech discussion. Major rebuilds, engine theory, etc.
HIGH-END DISCUSSION ONLY - NOT FOR GENERAL TECH INFO

7 quarts instead of 5?

Thread Tools
 
Search this Thread
 
Old Oct 10, 2005 | 01:54 AM
  #16  
93camaroLT1's Avatar
Registered User
 
Joined: Oct 2002
Posts: 665
Re: 7 quarts instead of 5?

Originally Posted by rskrause
I run a stock volume blueprinted pump and a Canton pan. While some say otherwise, I see no need for a HV pump on most setups, it just takes extra power to drive and there IS a risk of uncovering the pickup with a stock pan/HV pump combo. With a HV pump there will be more oil in the top of the motor. Combine that with high-g manuvers and maybe an oil level that is a little low and you can have a disaster. If you feel compelled to run a HV pump, I advise aginst a stock pan. It's less an issue of pan capacity as it is of oil control. If you run a HV pump and a stock pan, at least be sure that your oil level is on the high side (which also costs hp).

Rich
I have read a lot about losing about losing some HP by running a high volume oil pump, my question is how much HP is lost exactly in terms of RWHP (assuming you are running a stock pan)?
Old Oct 10, 2005 | 06:43 AM
  #17  
rskrause's Avatar
Moderator
 
Joined: Dec 1969
Posts: 10,745
From: Buffalo, New York
Re: 7 quarts instead of 5?

Originally Posted by 93camaroLT1
I have read a lot about losing about losing some HP by running a high volume oil pump, my question is how much HP is lost exactly in terms of RWHP (assuming you are running a stock pan)?
I'll bet someone has actually tested it, but I have never seen data. My guesstimate is that it qould really surprise me if it's as much as 5hp. But it would vary with rpm and oil viscosity anyway.

Rich
Old Oct 10, 2005 | 12:38 PM
  #18  
SStrokerAce's Avatar
Banned
 
Joined: Oct 2002
Posts: 6,518
Re: 7 quarts instead of 5?

Originally Posted by cehan
What are some of the things that can be done to get the oil back into the pan?

Chris
Windage trays, baffles, preping the block correctly in the lifter valley, making sure the head drain holes can drain into the block without issue. I do a lot of things on my stuff to make sure that the oil gets back into the bottom of the pan and stays there.

Bret
Old Oct 10, 2005 | 01:55 PM
  #19  
Z28SORR's Avatar
Registered User
 
Joined: Jul 2002
Posts: 3,768
From: Friendswood, TX, USA
Re: 7 quarts instead of 5?

I doubt they do this anymore but we used to die grind the lifter valley until it was smooth as a babies *** and coat it with epoxies paint.
Old Oct 13, 2005 | 06:37 AM
  #20  
Mindgame's Avatar
Registered User
 
Joined: Nov 2001
Posts: 2,985
From: In a house by the bay
Re: 7 quarts instead of 5?

Originally Posted by SStrokerAce
Windage trays, baffles, preping the block correctly in the lifter valley, making sure the head drain holes can drain into the block without issue. I do a lot of things on my stuff to make sure that the oil gets back into the bottom of the pan and stays there.

Bret
Hey, now that's a novel concept... "oil control".

You guys who are wondering about HP loss from a "high volume" pump.... see how much you lose with high pressure in the upper revs. An HV's higher low rpm pressure isn't going to hurt you... quite the opposite actually.

-Mindgame
Old Oct 13, 2005 | 10:01 PM
  #21  
Stephen 87 IROC's Avatar
Registered User
 
Joined: Mar 2000
Posts: 2,037
From: 51°N 114°W, 3500' elevation
Re: 7 quarts instead of 5?

I have no idea what my pressure is at 7000 rpm. I don't have enough time to look at the gauge. If the low pressure warning light comes on, that's all I'm concerned with.

Oil pumps will pump volume depending on the rpm but the pressure is regulated. As long as my oil galleries are full of oil, I just want the pressure to stay above 30 psi. The pump's internal regulator will keep the pressure from going to high.
Old Oct 15, 2005 | 05:43 PM
  #22  
KAT Automotive's Avatar
Registered User
 
Joined: Jun 2005
Posts: 23
From: Overland Park in the Great State of KANSAS
Re: 7 quarts instead of 5?

HP/HV pumps put more load on the distributor gear causing more wear and possible timing changes.
Old Oct 15, 2005 | 06:31 PM
  #23  
idunno's Avatar
Registered User
 
Joined: Feb 2003
Posts: 4
From: Fairfax, VA
Re: 7 quarts instead of 5?

hey mindgame, this might be a dumb question, but why would pressure at high rpm cause a greater loss than high volume?
Old Oct 15, 2005 | 08:05 PM
  #24  
Bodacious Critter's Avatar
Registered User
 
Joined: Oct 2005
Posts: 30
From: God's country, NC
Re: 7 quarts instead of 5?

Originally Posted by rskrause
I run a stock volume blueprinted pump and a Canton pan. While some say otherwise, I see no need for a HV pump on most setups, it just takes extra power to drive and there IS a risk of uncovering the pickup with a stock pan/HV pump combo. With a HV pump there will be more oil in the top of the motor. Combine that with high-g manuvers and maybe an oil level that is a little low and you can have a disaster. If you feel compelled to run a HV pump, I advise aginst a stock pan. It's less an issue of pan capacity as it is of oil control. If you run a HV pump and a stock pan, at least be sure that your oil level is on the high side (which also costs hp).

Rich
Good advice.

Originally Posted by cehan
What are some of the things that can be done to get the oil back into the pan?

Chris
Make sure that all of the return passages are optimized. Attention to detail!
Oh, and most performance pans these days are not deeper. They get their added capacity from kick-outs to the sides. This also contributes to lessening the odds of the pick-up becoming uncovered. And although things can always be fine-tuned to a given application, stay close to the pan manufacturers recommendation as to oil capacity. And make sure you use a compatible pick-up, set properly.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RUENUF
Cars For Sale
6
Mar 13, 2016 03:37 PM
Klypto
Drivetrain
2
Jul 2, 2015 04:49 PM
94FlamdS10Blazr
LT1 Based Engine Tech
15
Apr 3, 2003 02:33 PM
blu94Z
LS1 Based Engine Tech
14
Jan 15, 2003 08:57 AM
1loudz
LS1 Based Engine Tech
3
Aug 20, 2002 11:45 PM




All times are GMT -5. The time now is 01:26 PM.