Hi guys,

 

I know this is not the right forum for this topic but my migration to the Yeti forum has so far proved fruitless :-) .. and there tend to be a lot of tech heads on this forum who may be able to answer my question :-)

 

I recently traded in my beloved mk1 Fabia vRS for a Yeti with a 2.0 CR engine. One of the most popular mods on the PD engined vRS is the CCV mod or Elephant hose mod. For the uninitiated this mod diverts the CCV vent into a catch can or more simply into the atmosphere directly. It prevents the build up of the dreaded black death gunge in your EGR valve and intake manifold by preventing the undesirable mix of oil vapour with soot from the EGR. It also prevents your turbo and intercooler from becoming saturated with oil.

 

On the newer CR engines there is both an EGR system and CCV operating a much a similar way. So I've been thinking why not implement the same mod in my Yeti, surely it can't do any harm. But I cannot find any reference anywhere on the web to anyone implementing such a modification on a CR diesel engine. Am I missing something? Would this be ill advised?

Edited 26 April, 20179 yr by piggoy

You're not missing anything, such a mod may well prove to be just as useful on the CR as it was on the PD, although I certainly strongly favour a catch-can over venting.

3 minutes ago, sepulchrave said:

You're not missing anything, such a mod may well prove to be just as useful on the CR as it was on the PD, although I certainly strongly favour a catch-can over venting.

I agree, the CCV blow-by is nasty. Once difference between PD and CR that I am aware of is the EGR diversion occurs after the DPF in the CR engine, and the PD has no DPF. So the soot content of the EGR may be significantly lower in the CR. But I say "may" with scepticism since there have been many cases of blocked EGR coolers on CR engine and the thing is a bugger to remove since it's now mounted on the back.

The main culprit for causing the oil misting into the intake of a PD engine was the tandem pump. Being lubricated by oil and exhausting air into the top of the cam cover plus the location of the vent in the top of the cover that went straight into the intake caused for a lot of oil to be introduced.

 

Now I've not studied the newer CR engine much but they may have improved the design to try and eliminate the carrying over of oil into the intake system. Of course you would never be able to eliminate in completely but they may have reduced it.