TD5 EGR Removal/Blanking

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T

theringding

New Member
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Location
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I’m looking to do the EGR blanking/removal on my td5 defender.

I’m swaying towards the allisport kit as it’s a simple blank and you don’t have to remove the pipes (which apparently are likely to shear as you remove them?). Is this fairly simple to do? Can anyone recommend the allisport egr blanks?
 
I refitted my EGR and Cat as the exhaust was embarrassingly smelly for normal road use and school run etc, not smokey just smelly, it is very much improved, cleaner and sweeter smelling and honestly there is hardly any difference in performance.
 
That EGR delete kit ids no good for early Defenders 2001 and before. ALisport do one that has the new large inlet tube with a built in blanking for the egr pipe the goes to the exhaust. It saves all the pain if the two exhaust bolts snap off or just wont come out. BUT..... they dont sell a new connector to link the original egr pipe to the new pipe fitting . Its a clamp like the one on the exhaust mainifold pipe joint to the manifold. Nont one of the usual ftermsrket lot sell this clamp so if you damage the existing Egr one when taking it off you will be stuck.
Anyone know where i can buy one or get one thats a usable second hand one?
Cars after 2001 need the two new flat blanking plates but old TD5 cars have this bell ended pipe fitting not a two bolt connection. I not none of the videos on Youtube bother to mention this item or how to remove it etc etc.
 
l fitted the EGR delete kit because l was told it would "improve performance and MPG"

lt made no noticeable difference at all. l would imagine it would make a difference if the EGR valve unit was siezed or otherwise faulty.

But mine was working fine. I eventually refitted it due to some scare story about someone being stopped at a random roadside check in their Land Rover and fined £1,000 for having no EGR valve fitted.
 
lightning said:
l fitted the EGR delete kit because l was told it would "improve performance and MPG"

lt made no noticeable difference at all. l would imagine it would make a difference if the EGR valve unit was siezed or otherwise faulty.

But mine was working fine. I eventually refitted it due to some scare story about someone being stopped at a random roadside check in their Land Rover and fined £1,000 for having no EGR valve fitted.
Click to expand...
What are you looking to gain from removing the EGR valve?
+1 from me to leave the EGR system in place, just ensure it is working as it should.
 
l was told it was better off without it, that the engine would "breathe easier" and perform better generally.

The Defender doesn't have an EGR valve in ROW specification.

Anyhow, l refitted my EGR valve because removing it seemed of no benefit.
Just make sure yours isn't siezed
 
Removing the EGR has several benefits although they are not immediately obvious.
Lower engine temperatures and a reduction in oil contamination and carbon deposits are the main two. You should also get a slightly better pickup and power response from the engine and (because of that) a slightly improved fuel economy.
If you frequently change the oil and clean the inlet manifold before it 'goos' up you will probably not notice any change.

You are right @lightning the engine will breath easier and perform better generally, so you are better off without it :)
 
miktdish said:
Removing the EGR has several benefits although they are not immediately obvious.
Lower engine temperatures and a reduction in oil contamination and carbon deposits are the main two. You should also get a slightly better pickup and power response from the engine and (because of that) a slightly improved fuel economy.
If you frequently change the oil and clean the inlet manifold before it 'goos' up you will probably not notice any change.

You are right @lightning the engine will breath easier and perform better generally, so you are better off without it :)
Click to expand...
How do you prove these benefits?
It's like fitting an electric fan to a TD5 improves mpg prove it!!
Increase the tyre pressures will do the same.
If on paper the benefits are there they are so small the first set of roadworks you come up against on your daily drive the benefit has gone for that month.
 
Tim4x4 said:
How do you prove these benefits?<snip>
Click to expand...

Well if you look at the inside of the inlet manifold on a car with and without EGR, especially one with a few thousand miles under its belt, the difference is plain to see.
2nd, diesels like cold, oxygen rich air, adding hot exhaust gasses doen't help this.
There are some advantages (NOx reduction being the main) but overall, in the 300tdi and TD5 engine, using modern fuel, removal of the basic EGR system deployed, will offer improvements ...

Here's a read ... https://dieselnet.com/tech/engine_egr.php
 
miktdish said:
Well if you look at the inside of the inlet manifold on a car with and without EGR, especially one with a few thousand miles under its belt, the difference is plain to see.
2nd, diesels like cold, oxygen rich air, adding hot exhaust gasses doen't help this.
There are some advantages (NOx reduction being the main) but overall, in the 300tdi and TD5 engine, using modern fuel, removal of the basic EGR system deployed, will offer improvements ...

Here's a read ... https://dieselnet.com/tech/engine_egr.php
Click to expand...
I have never found any proof that removing the EGR from a TD5 engine has any improvement at all to the day to day running of said vehicle. Have you?
 
Tim4x4 said:
I have never found any proof that removing the EGR from a TD5 engine has any improvement at all to the day to day running of said vehicle. Have you?
Click to expand...

No. I don't own a TD5.
I don't own a shortblock Chevy 350 either but if I did I would clean up the air intake.
I do own and have owned several 300tdi's and all of those have been de-egr'd...

I wouldn't want to clag up any part of the inlet side of any of type engines I own and if the ability to feed it cleaner, cooler air was as easy as blanking off a valve then its the first thing i'd do to satisfy my mechanical sympathy issues.
 
Last edited:
miktdish said:
No. I don't own a TD5.
I don't own a shortblock Chevy 350 either but if I did I would clean up the air intake.
I do own and have owned several 300tdi's and all of those have been de-egr'd...

I wouldn't want to clag up any part of the inlet side of any of type engines I own and if the ability to feed it cleaner, cooler air was as easy as blanking off a valve then its the first thing i'd do to satisfy my mechanical sympathy issues.
Click to expand...
The new member was making enquiries about a TD5 engine nothing else just a TD5.
It was not good of you to spout utter rubbish on a totally different subject then make criticism when your facts are questions. I stand fully by my statement that removing the EGR valve or rendering the system inoperable will give no rewards on a TD5 engine for day to day running.
An abundance of compressed air is available within the intake the small amount of coating from the EGR is not restricting anything to reduce performance or efficiency of the engine. The crankcase breather also the same applies.
 
Tim4x4 said:
The new member was making enquiries about a TD5 engine nothing else just a TD5.
Click to expand...

Yes.

Tim4x4 said:
It was not good of you to spout utter rubbish on a totally different subject then make criticism when your facts are questions. I stand fully by my statement that removing the EGR valve or rendering the system inoperable will give no rewards on a TD5 engine for day to day running.<snip>.
Click to expand...

Let me repost a few of my comments which perhaps you would be good enough to qualify as being "on a totally different subject". ...
Removing the EGR has several benefits although they are not immediately obvious.
Lower engine temperatures and a reduction in oil contamination and carbon deposits are the main two. You should also get a slightly better pickup and power response from the engine and (because of that) a slightly improved fuel economy.
overall, in the 300tdi and TD5 engine, using modern fuel, removal of the basic EGR system deployed, will offer improvements

So for clarity ... Removing the EGR system on a TD5 engine has several benefits although they are not immediately obvious.
Lower operating engine temperatures and reducing oil contamination and carbon deposits in the inlet manifold are the main two, which in turn, will lead to a better combustion characteristic which should (thats a key word there @Tim4x4) lead to a slightly better engine pickup and power response and offering a slightly immproved fuel economy.

Which of my "facts" are you questioning ?

Your fact .. .removing the EGR valve or rendering the system inoperable will give no rewards on a TD5 engine ... unfortunately does not stand up in the lightest of breezes and offers the casual reader a clear inclination of your understanding of what is physically happening when the Exhaust Gas is presented back into the engine through the inlet manifold.

Couple of pics as i'm obviously not explaining myself clearly ...
Exhaust-Gas-Recirculation-EGR-1200x720.jpg


faulty-or-bad-EGR-Valve.jpg


Bit of light reading ... REF: https://dieselnet.com/tech/engine_egr.php
 
A generalisation of the effects of EGR valve systems on diesel engines not specifically a TD5 engine.
The EGR system may help to realise a desired internal engine air temperature to reduce NOx, but there is another benefit. The reduction in internal engine temperature has also been associated with increased engine longevity. (Combustion temperature is lower because of a reduction of Oxygen in the cylinders)
Valves, particularly exhaust valves, are susceptible to stress from the drastic temperature variations and the load which they must endure. Exhaust and intake valve failure relates directly to engine failure because the pistons, connecting rods, and cylinder walls are often damaged when valve failure occurs. Keeping the valves cooler will also help them last longer and remain in their proper position.

In summary, modern EGR systems are beneficial for the reduction of harmful NOx emissions, improved throttle response, and increased engine longevity, particularly in diesel engines.
 
For me, it's removal on every diesel engine TD5 or not. I see the point in it. But for me the older the system gets, the more gummed up the inlet manifold gets as a result of the EGR.
Ask any of the good TD5 tuners, and I can guarantee that non of them will recommend the EGR.
Just my opinion.

Either way, no need to get emotional chaps. Just opinions everyone is entitled to!
 
theringding said:
I’m looking to do the EGR blanking/removal on my td5 defender.

I’m swaying towards the allisport kit as it’s a simple blank and you don’t have to remove the pipes (which apparently are likely to shear as you remove them?). Is this fairly simple to do? Can anyone recommend the allisport egr blanks?
Click to expand...

Did you do the Alisport Egr blank? I did one on my 2001 TD5 Defender yesterday and it was a bastard to fit. First i found two of the four EGR bolts into the manifold were cross threaded and ruined. Then when i went to fit the exhaust feed pipe onto the new Alisport egr replacement pipe the flaming egr clamp would not fit or do up. It took me eight hours in all and wasnt an enjoyable job at all. You have to re-attach the clamp and the old feedpipe even though the Alisport pipe has the blocked off pipe or the exhaust manifold will pump fumes out if its not reconnected. I now need to get a new Egr clamp for it and have looked at all the websites of the usual suppliers and on ebay etc but no joy. Anyone have one of these clamps to sell or now where i can buy one of them??????
Then to top off the day, i pulled the bonnet release and it broke. The end of the worst day owning a Defender!!!!!!!!!!!!
 
Dodgy Den said:
Did you do the Alisport Egr blank?

You have to re-attach the clamp and the old feedpipe even though the Alisport pipe has the blocked off pipe or the exhaust manifold will pump fumes out if its not reconnected.
Then to top off the day, i pulled the bonnet release and it broke. The end of the worst day owning a Defender!!!!!!!!!!!!
Click to expand...


Do you not put a blanking plate at the manifold end so there’s no fumes in the feed pipe?
 
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