I am in the process of adding a turbo to my 6.2 and am wondering which is the correct (or better) way to route the CDR valve. The CDR on a NA 6.2 pulls from the oil fill tube, through the valve, and into the intake manifold. The 6.5 CDR pulls from the p-side valve cover and into the intake prior to the turbo.
Is it beneficial (or needed) to swap valve covers and route the CDR in this respect? Or just route from the oil fill tube to the CDR then the intake prior to the turbo? I wonder if it matters from a function standpoint and the 6.5 routing method is more to minimize the amount CDR hose needed and keep it clear of the turbo?
And if swapping to the 6.5 setup, I'm assuming I'd have to swap fill tubes as well and go with a 6.5 oil fill cap (which i believe is not vented)?
From what I could find the 6.5 CDR valve itself was better from an excessive oil use standpoint so I figured I would at least change to that.
www.dieselhub.com
Is it beneficial (or needed) to swap valve covers and route the CDR in this respect? Or just route from the oil fill tube to the CDR then the intake prior to the turbo? I wonder if it matters from a function standpoint and the 6.5 routing method is more to minimize the amount CDR hose needed and keep it clear of the turbo?
And if swapping to the 6.5 setup, I'm assuming I'd have to swap fill tubes as well and go with a 6.5 oil fill cap (which i believe is not vented)?
From what I could find the 6.5 CDR valve itself was better from an excessive oil use standpoint so I figured I would at least change to that.
6.5L GM Diesel CDR Valve Replacement Procedures
How to replace the CDR valve on a 6.5L GM, Detroit turbodiesel. The crankcase depression regulator valve is vital to the process of recycling fumes and gases that enter the crankcase via blowby. The CDR valve helps regulate the return of these combustion products into the intake.
www.dieselhub.com
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