Ok guys,

I've seen threads on this that skirt around over heating and egr cooler failure and I even remember the threads on why to do it to the old toyota surf, What I'm looking for a reasoned argument to convince me that removing a piece of equipment installed at manufacture is tot he benefit of the engine, so what is the benefit of removing the EGR?

I'm also thinking that this is something others will try to assertain from other threads and hope this thread will give a "CliffNotes" summarisation of the main reasons - so please can we try to keep it on track chaps?

Cheers

Malky

The main point is Malky, that removing the EGR is not the issue, it is the EGR Intercooler that is the part that really needs removing..
The reason for this is because they often ( not always) become pourous and allow exhaust gasses into the cooling system, which in turn forces out the coolant, causing overheating and busted Head Gaskets and /or Heads.
In removing the intercooler, we remove the EGR as well as it serves no real purpose to us with diesels, I did before and after smoke tests and it showed a very slight increase in emmissions leves, if I recall 0.2 % increase. So we remove the EGR Valve as a matter of course whilst doing the Intercooler for the safety of the engine.

well if u was a athelet you would not eat your own SHI^ would ya

What benefits of the engine would hot exhausts do?

The only benefit you got is you burn it twice to get a bit better emissions on the cost of more sot.

Danne u cant remove them in Sweden can u?

Nope

But I have blanked it of so I will get it past MOT, sot levels are to high with it unplugged.

Quote: 123hotchef wrote in post #3

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well if u was a athelet you would not eat your own SHI^ would ya

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We have to remember that only a small percentage of the exhaust gas gets recycled, I think it is the bit from initial acceleration which contains some unburnt fuel, there would not be any point in recycling the 'normal' exhaust fumes as they would be fairly clean anyway if the engine is running OK.

Malky,
we dont seem to have this problem with the new shapes, they have a re-designed EGR cooler, bigger with more plates in it and different metal on the plates. Nobody sells the kits for replacing them, I did enquire of the popular suppliers if they made one for the new shapes and they said no because they are not needed as they are designed better, just take the valve off and clean it from time to time.
I am a great believer in leaving engines as they are manufactured like yourself. Seems the coolers on classics were designed in a hurry to cope with emmission regs. The metal the 2 plates in the cooler are made of becomes porous and at first allows air into the cooling system, left longer it allows water under pressure to enter the combustion chamber which if you are lucky will blow the gasket or worse, crack the head.
Having said that, there are still many reports of gaskets going and heads cracking after the EGR has been removed. Basil's recent experience where he removed it quickly when seeing bubbles, has seemingly escaped the damage and is running ok.

in that case Bootsie could we not swipe the cooler of the new shape or are they COMPLETELY different?

Quote: LezT wrote in post #2

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The main point is Malky, that removing the EGR is not the issue, it is the EGR Intercooler that is the part that really needs removing..
The reason for this is because they often ( not always) become pourous and allow exhaust gasses into the cooling system, which in turn forces out the coolant, causing overheating and busted Head Gaskets and /or Heads.
In removing the intercooler, we remove the EGR as well as it serves no real purpose to us with diesels, I did before and after smoke tests and it showed a very slight increase in emmissions leves, if I recall 0.2 % increase. So we remove the EGR Valve as a matter of course whilst doing the Intercooler for the safety of the engine.

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Difference may be that the new shape engines were designed to have an EGR from its inception as opposed to the classic which is a 30 year old engine design that's had an emissions component bastardised to fit.
It's the first thing I would recommend to anyone with a fbw classic, my cooler went porus at 67k and would have cost a fortune to fix if I didn't catch it on time

off to speak to wellspacedout - cheers boys

I don't think it gets hotter, you get in cold air instead of warm exhausts.

Was suggested before Malky but they are completely different engines, different side of engine and a lot bigger cooler, wouldnt work cos EGr valve still has to fit on classic inlet manifold on the other side of the engine.

All egr's are a weak point nomatter what make or model you drive, face the facts, its basicly a radiator inside a casing with coolant & very hot gasses, this will take its toll on the matal & eventually give way, down side is you wont see it till its too late.

Ive replaced plenty at work.

Quote: Greigy wrote in post #16

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All egr's are a weak point nomatter what make or model you drive, face the facts, its basicly a radiator inside a casing with coolant & very hot gasses, this will take its toll on the matal & eventually give way, down side is you wont see it till its too late.

Ive replaced plenty at work.

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on the transit the egr vales fukc up the turbos when thy stop working

ffs Greigy have you got your fingers tied together?

Soosidges Basil he got sossidges...

Quote: Basil wrote in post #19

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ffs Greigy have you got your fingers tied together?

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by bloody mods tooo!!

shaddap and get that egr off, you!