OIL Pres Question

Old 07-01-2007, 11:22 AM
  #1  
dtperformance
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Sep 2003
Posts: 105
Default OIL Pres Question

If a sbc has 12 pounds at idle hot (700rpms 180 deg) and 30-35 cruising (14-1600 rpm) and 50 anything over 4k does this make it bad. The motor is new and yes at a idle I would agree it is low(but its a chevy)when its hot but in no way do I think the motor is hurt. as I was always told 7 psi per 1000 rpm is min and fine. The thing runs drives sounds great. Also I could turn it up to 900 and it sits at 20 at idle.
dtperformance is offline  
Old 07-01-2007, 11:24 AM
  #2  
chevguy65
Senior Member
RACING JUNKIE
 
Join Date: Sep 2005
Location: ID
Posts: 1,125
Default

if you do not drop below probably 5 lbs at idle you should be ok.

Is it a stock oil pump?
chevguy65 is offline  
Old 07-01-2007, 11:24 AM
  #3  
dtperformance
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Sep 2003
Posts: 105
Default

Also if it matters it has a relocated oil filter with big bradded lines that I was told could also lower the pressure trying to puss the oil threw them big lines #6 bradded lines over 5ft each.
dtperformance is offline  
Old 07-01-2007, 11:25 AM
  #4  
dtperformance
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Sep 2003
Posts: 105
Default

Originally Posted by chevguy65
if you do not drop below probably 5 lbs at idle you should be ok.

Is it a stock oil pump?
yes stock oil pump
dtperformance is offline  
Old 07-01-2007, 01:55 PM
  #5  
chevguy65
Senior Member
RACING JUNKIE
 
Join Date: Sep 2005
Location: ID
Posts: 1,125
Default

I think your ok at 12lbs.

If I am wrong I know one of the guys will jump in and save the day
chevguy65 is offline  
Old 07-01-2007, 02:10 PM
  #6  
mcracecars
Senior Member
EXPERT BUILDER
 
Join Date: Dec 2006
Posts: 272
Default

#6 braided for remote mount, is too small. Minimum should be #10
mcracecars is offline  
Old 07-01-2007, 05:38 PM
  #7  
dtperformance
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Sep 2003
Posts: 105
Default

Originally Posted by mcracecars
#6 braided for remote mount, is too small. Minimum should be #10
Would that cause it to be low and also it is 8 not 6 I ment #8. But still is that to small and would it cause that. Im not worried really because it runs and drives great with no prob and sounds great no noise but I had a guy come look at it to buy it and he thought it was to low and did not buy it only for that reason only. Hell I even dropped our agread price 2k right there just incase there was a prob and 2k would cover it. But its brand new and I just want other oppinions

Thanks.
dtperformance is offline  
Old 07-01-2007, 07:37 PM
  #8  
lively
Senior Member
RACING JUNKIE
 
lively's Avatar
 
Join Date: Nov 2004
Location: ILLINOIS
Posts: 2,191
Default

LOW OIL PRESSURE AT IDLE ON MOST CHEVIES IS NOT A PROBLEM JUST AS LONG AS 35-40 POUNDS IS ACHEIVED AT CRUISING SPEED--AND IT DOESN'T FALL OFF ABOVE THAT--MY SBF RUNS 15- 20 AT IDLE AND 40-50- AT CRUISING SPEED AND I HAVE OVER 100,000 MILES ON IT WITH NO PROBLEM--GOOD LUCK AND HOPE YOU GET IT SOLD AND IT WAS GREAT YOU WERE HONEST WITH THAT BUYER 8) :lol:
lively is offline  
Old 12-05-2008, 11:02 AM
  #9  
mopar1962
Member
JUNIOR BUILDER
 
Join Date: Nov 2008
Posts: 87
Default

If the engines new I would definitely change the oil filter as this may be the cause of your low pressure. :!:
mopar1962 is offline  
Old 01-21-2009, 02:26 PM
  #10  
TheYellaBrick
Senior Member
RACING JUNKIE
 
TheYellaBrick's Avatar
 
Join Date: Mar 2008
Location: Emmett, Idaho
Posts: 7,334
Default

Originally Posted by mopar1962
If the engines new I would definitely change the oil filter as this may be the cause of your low pressure. :!:
If it's a Fram, loose it and get a Wix ! 10 lbs per 1000 RPM is a good general rule.
TheYellaBrick is offline  

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service