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1994.5 - 1997 7.3L Power Stroke Diesel  

Lpop?????????

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Old Feb 6, 2009 | 11:40 AM
  #1  
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MADVAN
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From: Levittown
Lpop?????????

1- Anyone running a real LPOP gauge?
2- Anyone have flow #'s of a stock LPOP vs. the Melling?

Just looking at general averages of a 7.3 PSD with its
Mileage and mods.

Stock with motor at running temp = 10psi at idle and 40-70psi at 3300rpm.

Bill
 
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Old Feb 6, 2009 | 11:53 AM
  #2  
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Neal 97 250
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I have a real gauge. mine usually runs at 40 psi but can get to as much as 60 or so depending on temp, RPM's and how hard I am running it.

160,000 miles and mods in sig
 
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Old Feb 6, 2009 | 05:26 PM
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Bill my truck idles at 25 psi and about 50 psi cruising. 75 when cold.

No flow numbers sorry. FWIW the Wix oil filter (1734) is rated really high! I want to say 30 gallons per minute but that sounds way too much! I have the email some where from them.
 
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Old Feb 6, 2009 | 08:00 PM
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Those are some good #'s Tj with your combo (17*,splits,miles on unit)
Neals # look good also with combo.
Just have thoughts on things with big oil and sticks
that need the oil. Like how bad the hpop taxes the lpop.
Iam still unshure of the effects.
Have concerns with the piston cooling and cam bearings.

Bill
 
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Old Feb 6, 2009 | 09:14 PM
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Originally Posted by MADVAN
Those are some good #'s Tj with your combo (17*,splits,miles on unit)
Neals # look good also with combo.
Just have thoughts on things with big oil and sticks
that need the oil. Like how bad the hpop taxes the lpop.
Iam still unshure of the effects.
Have concerns with the piston cooling and cam bearings.

Bill
If I ever get my homegrown big oil done I can let you know some numbers...... OBA project has my attention now...Then turbo, fuel and oil.
 
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Old Feb 6, 2009 | 10:55 PM
  #6  
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Converting the dash gauge to read pressue isn't particularly difficult. I posted about it here https://www.ford-trucks.com/forums/7...for-gauge.html Before I put the sender on the truck, I used my compressor to check the reading of the gauge. It goes off the "normal" range at 100PSI. If falls off the bottom of normal at 20 PSI.
 
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Old Feb 7, 2009 | 04:33 AM
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170.000 Miles and I have the exact same numbers as Neal
 
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Old Feb 7, 2009 | 07:37 AM
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From: Levittown
Seems that even high mileage psd's average a higher than
minium required pressure.
Throw big oil into the mix and it seems the #s change.
End result in piston failures, walking cam bearings.
Just thoughts no proof.

Bill
 
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Old Feb 7, 2009 | 11:58 PM
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Bill, I'm about 20 psi at idle, 45-50 running. Cold as high as 75. Glenn
 
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Old Feb 8, 2009 | 11:18 PM
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To all.
Are you using bypass oil filter system?
If yes. The return oil (cleaned), is it returned
into the pressure side of system or just back to pan?

Bill
 
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Old Feb 9, 2009 | 06:23 AM
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Originally Posted by MADVAN
To all.
Are you using bypass oil filter system?
If yes. The return oil (cleaned), is it returned
into the pressure side of system or just back to pan?

Bill
Yes, running a frantz. Return is to the pan via the plug on the block near the oil filter
 
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