Attention: TDR Forum Junkies 
Vaughn MacKenzie
TDR MEMBER
I have a pressure meter at work with an adapter that measures flow so I borrowed it to test my blowby. I thought with a lot of miles on my rig it would be an objective way to find out what kind of shape the motor is in before throwing bombing $$ at it. I figured it was pretty sound but it's nice to have numbers.
I attached the piece to the blowby hose then ran the pressure line to my meter and held it there while I free-revved the motor to the RPM levels listed in a thread I found. I think the numbers come from Cummins.
Here's what my numbers were:
2200 RPM = 65 LPM (liters per minute)
2500 RPM = 75 LPM
2800 RPM = 83 LPM
The thread I got the info from is here (see Don M's post 6-22-02)
https://www.turbodieselregister.com/forums/showthread.php?s=&threadid=49902&highlight=blowby
Cummins specs Newer Engines:
2200 = 63 LPM
2500 = 76 LPM
2800 = 85 LPM
Cummins Specs Older Engines
2200 = 126 LPM
2500 = 152 LPM
2800 = 170 LPM
My numbers compare good. A better test would include a dyno run and really put a load on it, but I think this test should be a decent indicator of engine sealing.
Vaughn
I attached the piece to the blowby hose then ran the pressure line to my meter and held it there while I free-revved the motor to the RPM levels listed in a thread I found. I think the numbers come from Cummins.
Here's what my numbers were:
2200 RPM = 65 LPM (liters per minute)
2500 RPM = 75 LPM
2800 RPM = 83 LPM
The thread I got the info from is here (see Don M's post 6-22-02)
https://www.turbodieselregister.com/forums/showthread.php?s=&threadid=49902&highlight=blowby
Cummins specs Newer Engines:
2200 = 63 LPM
2500 = 76 LPM
2800 = 85 LPM
Cummins Specs Older Engines
2200 = 126 LPM
2500 = 152 LPM
2800 = 170 LPM
My numbers compare good. A better test would include a dyno run and really put a load on it, but I think this test should be a decent indicator of engine sealing.
Vaughn
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