EGR's - CRD Killer

coled1970

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May 27, 2012
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Sorry for the delay Chartrock attached are the pics of my current bracket but will be hopefully moving it to a bracket on the RH inner guard next days off.
 
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Drover

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After many years I have actually remembered to follow up on something Ive been meaning to do, I marked the mileage when I dumped my catch can last and this time I measured what was in the can, so after 12,000km I had 230ml in the can, so thats a lot of oil which didn't go thru the engine and gumming up the intake manifold, haven't blocked the soot intake yet as the blanking plate is a lot of work and I still need a hole in it so I don't get codes..............my intake is manifold may be sooty but it's dry as no oil just hot dry air, my can doesn't vent into the intake.
Have no idea if thats a lot or average, I suppose it would depend on type of driving.
 

Tone

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After many years I have actually remembered to follow up on something Ive been meaning to do, I marked the mileage when I dumped my catch can last and this time I measured what was in the can, so after 12,000km I had 230ml in the can, so thats a lot of oil which didn't go thru the engine and gumming up the intake manifold, haven't blocked the soot intake yet as the blanking plate is a lot of work and I still need a hole in it so I don't get codes..............my intake is manifold may be sooty but it's dry as no oil just hot dry air, my can doesn't vent into the intake.
Have no idea if thats a lot or average, I suppose it would depend on type of driving.
I have done a lot and research on the plate with the whole in it. I had one in my Triton from the day I drive it home. It’s believed that they don’t work with the hole the air/soot just goes through at a higher velocity. I didn’t think it worked in mine. I put a catch can on and had the egr tuned off. Those figures of oil is similar to mine over that distance. Also it’s worse with the lighter weight oils that are used in new cars aswell.
 

Dandy

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As the owner of a Nissan TD30 “grenade” that actually Grenaded I have experienced most of the issues raised here. I bought the Nissan and installed the NADS (Nissan anti detonation system) including egr block plate, Dawes valve and catch can. Still ended up putting a 2015 motor into my 05 patrol. Even then I had nagging doubts when towing. The Nissan has a known issue.....

So as soon as l picked up the 200 series I took it to Ultimate diesel and had a soot clean and then an HPD oil catch can fitted. Probably not absolutely necessary but gives me peace of mind. From now on I will be taking my diesel tow vehicle to diesel specialists. The catch can picked up about 200ml in 10000 k and as I add weight and make other changes I’ll continue to optimize the tune.
 

Johnanbev

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Jul 7, 2013
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@Drover your oil catch looks about normal..
I traded the old Collie and bought a new one abouta month ago, first thing I did was to install the catch can.
Re the erg valve if you put a hole in a blanking plate it is as Tone says. The emission gas remains the same in quantity but is added to the manifold
over a longer time period, thereby achieving zilch.
 

Drover

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I actually would have put a blanking plate on, I made one for the Colorado but looked at all the junk I had to remove to fit it and thought "if the hole isn't big enough and I have to put a bigger hole in it ?" .................sent shudders, that was back in 13, I have pulled the MAP sensor and it's pretty clean compared to pre catch can days, so not bad...........................I did an EGR delete with catch can and made an electronic gizmo to shut down the EGR valve on my Grand Cherokee was very sweet but never measured how much oil collected, I was working in those days and didn't have time to bugger aroound with that stuff, fit it, fix it, works all good leave it alone.
I think all oil burners with this sort of EGR system need to fit at least a catch can, Nissan and Mitsubishi engine get choked to death without them.
 

Drover

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I would at least add a catch can, I thought with a DPF you don't get exhaust going into the engine as the DPF is supposed to burn the nasties , when it works and as a sideline will cause grass fires or burn you vehicle to the ground.
 

Johnanbev

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@Drover I installed the catch can the day after I bought the truck, so all good there!
EGR is pre combustion DPF is post combustion!
Ford Ranger trucks are the ones on recall for setting fire to grass and the truck itself, so all good there with the Collie.
Some info on DPF's and cleaning
 
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Drover

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I hated trucks with DPF as well as the AdBlue rigs they all caused problems from faulty sensors that would shut the rig down to smouldering stinky smoke because mud and paddock crap covered the furnace, I don't like any of them, designed by desk bound idiots..............I'll have a look at that vid later when I have enough data to watch it...............like the cats, they need to be changed every 40K or 60K, like who's going to do that, really.
 
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bigcol

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I read it
then read about not needing larger exhaust for a vehicle to run better

typical Engineer.....(even though he is electrical) fully believes that vehicle builders build the very best every time......... knob
vehicle manufactures build to a price and sales

bah, not going to rant further......... he's a knob
 
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Tone

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I read it
then read about not needing larger exhaust for a vehicle to run better

typical Engineer.....(even though he is electrical) fully believes that vehicle builders build the very best every time......... knob
vehicle manufactures build to a price and sales

bah, not going to rant further......... he's a knob
Was thinking that too.
 
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Drover

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I was refraining from saying the same, he obviously has never pulled down an engine and looked at the intake manifold of a diesel with a fully operational EGR, when new the ports would be say 25mm across jump forward 100,000km and the port opening is down to 20mm or less by 150,000km some are very choked becasue of the dry sooty air mixing with oily hot air and a build up of gunk slowly chokes the engine...............if I still had the pics I would post them up of a intake manifold that looked like the inside of a smokers lungs on TV..............as for engine wear I don't know but a choked up intake isn't going to do it any good.


Some of his comments are right though in regards to claims made by some regarding engine improvements but a car builder builds to a price thats why you get ordinary suspension..............
 
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bigcol

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apologies @Johnanbev he does explain the fundamentals of what an EGR does

he just has not mastered basic engineering with his reasoning behind NOT to block it, I will not pull apart his assumptions point by point
but
suffice to say - he should stay with electrics not mechanics
 
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Johnanbev

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Thanks @bigcol, no problems, discussion must be had, otherwise we learn nothing. Everybody has an opinion.
Something else I have been struggling with for years is Entropy, can't get my head around it for long till it disappears again.!
 
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