cdr removal
Senior User
Joined: Dec 2009
Posts: 180
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The reason I've considered removing the CDR and venting it overboard (likely through a catch can) is for simplicity and also 1 less thing to maintain. I seem to recall reading that if a CDR goes bad it can draw too much oil into the intake and cause lots of problems linked to a spike in cylinder head pressures caused by the higher BTU per gallon of oil as compared to diesel fuel. Is this correct or is my head making stuff up again?!
I agree that the CDR isn't terribly expensive but every dollar saved is a dollar I can spend on something else.... such as opening up the exhaust! If I do get rid of the CDR I will certainly have a catch can and if it's routed properly there shouldn't be too much issue with fumes in the passenger compartment. And I have enough stuff lying around that I could rig up the whole system with minimal cost. That's my two pennies.
I agree that the CDR isn't terribly expensive but every dollar saved is a dollar I can spend on something else.... such as opening up the exhaust! If I do get rid of the CDR I will certainly have a catch can and if it's routed properly there shouldn't be too much issue with fumes in the passenger compartment. And I have enough stuff lying around that I could rig up the whole system with minimal cost. That's my two pennies.
Post Fiend
Joined: Oct 2007
Posts: 10,501
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From: Faibanks Ak.
Several members have tried this in various ways, and as far as I know was none satisfied with the results. The oil burning issue is probably the number one reason for headgasket failure cause by not servicing the cdr, probably the most neglected item on our old trucks. Many pickups have been worn out with the cdr never been cleaned.
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
I have about 1/2 the stuff to try a filter medium in a somewhat larger container in an effort to reduce the haze out of a road draft tube.
But I keep forgetting to get the rest of the parts.
The big problem with raod draft tubes, oil drips on the road, makes the road slick when it rains and then eventually those drips make it to the streams and rivers when the rain eventually washes the oil off the road.
The CDR system turns those drips into fuel, which is not a bad thing.
And a system to cool the oil out of the crankcease vapors, would work better, but also take up more room and cost more to manufacture.
So we wound up with the CDR.
But I keep forgetting to get the rest of the parts.
The big problem with raod draft tubes, oil drips on the road, makes the road slick when it rains and then eventually those drips make it to the streams and rivers when the rain eventually washes the oil off the road.
The CDR system turns those drips into fuel, which is not a bad thing.
And a system to cool the oil out of the crankcease vapors, would work better, but also take up more room and cost more to manufacture.
So we wound up with the CDR.
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