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Post Info TOPIC: Catch cans


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Catch cans


Hi ,I'm thinking about fitting a catch can to my 2019 grand cherokee diesel jeep,have any jeep owners done this and if so which can did you fit and are you happy with the result any info would be good thanks Mike h

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Mike g AWD Ford territory diesel 635 Coromal,



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mike g g wrote:

Hi ,I'm thinking about fitting a catch can to my 2019 grand cherokee diesel jeep,have any jeep owners done this and if so which can did you fit and are you happy with the result any info would be good thanks Mike h


 Without getting too involved in the legalities, but apparent benefits of doing so, I believe that a Wise Man once was heard to say.  "Forget the catch can. Explore 'Delete EGR valve' option instead". Cheers

P.S Sergeant Schultz syndrome "I know nothing. Nothing!"



-- Edited by yobarr on Friday 23rd of June 2023 03:23:18 PM

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Catch can and EGR valve are too completely separate items and are in no way linked to each other.
EGR is to deal with pollution at low revs by recirculating exhaust gases, catch can is to catch the
crankcase fumes and remove as much oils as possible before going to the inlet.
Look around on various Jeep forums and see what the train of thoughts is amongst Jeep owners
like yours.
I own a 200 series diesel Landcruiser which are notorious for ingesting crankcase fumes which in
turn leave oil in the intercooler. A catch can deals with that. The diesel engine in the Landcruiser
has the PCV valve right above the timing chain. This results in excessive oil passing thru the PCV
valve as it is splashed up and ends up in the intercooler. Plenty of discussion on the LCOOL
forum which is now defunct.


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Ex software engineer, now chef



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Lotsa stuff on the Patrol4x4 forum too.



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deverall11 wrote:

Catch can and EGR valve are too completely separate items and are in no way linked to each other.
EGR is to deal with pollution at low revs by recirculating exhaust gases, catch can is to catch the
crankcase fumes and remove as much oils as possible before going to the inlet.
Look around on various Jeep forums and see what the train of thoughts is amongst Jeep owners
like yours.
I own a 200 series diesel Landcruiser which are notorious for ingesting crankcase fumes which in
turn leave oil in the intercooler. A catch can deals with that. The diesel engine in the Landcruiser
has the PCV valve right above the timing chain. This results in excessive oil passing thru the PCV
valve as it is splashed up and ends up in the intercooler. Plenty of discussion on the LCOOL
forum which is now defunct.


 Its the recirculated exhaust gases that contaminate the oil contained in the crankcase fumes, causing things like this.                                                                                              According to a several experienced mechanics removal of these exhaust gases minimises this contamination.                                                                                                                 Other benefits are improved economy and lower engine temps.                                                                                                                                                                                    With an EGR in place you are effectively forcing an engine to consume its own waste! Think about that. Cheers

 

IMG_0577.png



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EGR's were brought in as a band aid measure to try and show a reduction in emissions. Deleting the EGR actually improves fuel economy. Improved fuel economy equates to reduced emissions...

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BarneyBDB wrote:

EGR's were brought in as a band aid measure to try and show a reduction in emissions. Deleting the EGR actually improves fuel economy. Improved fuel economy equates to reduced emissions...


 Barney, there is far too much thinking involved here for the "Climate change" brigade to comprehend. Cheers



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v



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Sorry mate, sometimes I just cannot resist the urge....

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Member

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I really cant believe what I am reading here - all the guys commenting here would be jumping on anyone towing with a dual cab Ute but in the same breath are telling them to break the law and make there vehicle unroadworthy and un incurable . As I said youre all totally unbelievable.

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Leslie bishop


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yobarr wrote:
deverall11 wrote:

...


 Its the recirculated exhaust gases that contaminate the oil contained in the crankcase fumes, causing things like this.                                                                                              According to a several experienced mechanics removal of these exhaust gases minimises this contamination.                                                                                                                 Other benefits are improved economy and lower engine temps.                                                                                                                                                                                    With an EGR in place you are effectively forcing an engine to consume its own waste! Think about that. Cheers

 

IMG_0577.png


 How does exhaust gases mix with crankcase fumes? Crankcase fumes come from the crankcase hence PCV. EGR deals with

exhaust gases which mix with diesel fuel. On petrol engines the PCV pipe feeds into the inlet manifold.



-- Edited by deverall11 on Saturday 24th of June 2023 04:51:10 PM

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Ex software engineer, now chef



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Hmm a lot of half truths mixed together to make 1/2x1/2 = 1/4 truth ha ha !!
Interesting to see how some people hate "reduced emissions" and "climate change" and believe in removing all the improvements in new vehicles. Why do they buy them ???? There must be some old 1960s 4WDs still around somewhere to be perfect for towing that big van.
Jaahn

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I have a 200 LC and just fitted a Catch Can, from all the info I have read a couple of hundred bucks and an hour to fit it is a no-brainer.
Just like the no-brainer of Australia saving the world by changing to renewables whilst China builds another 2000+ coal fired power plants over the next few years and rolls in the lovely cheap power. And so it goes for India, Russia etc etc etc....

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"life is too short to spend it with people who suck the happiness out of you"

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