High Egts on 200tdi

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burlsube

Well-known member
I'm trying to get my EGTs down on my 200. It has an uprated Allisport intercooler and a VNT turbo. I can easily get to 1100 on a short pull on the highway and I'm sure I could get to the working limit. The EGT probe is after the turbo - it was like that when I got the car. I realize this isnt the ideal place. By my estimation using a infared thermometer the different before and after the turbo is about 250 degrees.

Any ideas on how to get the EGTs down? So far the only tuning that has been done is just moving the boost pin. The injection pump was recently replaced with a remanufactured unit from Turner.

I have a 3 inch exhaust, but it looks like the shop did 3 inches from about oil pan back. When I asked them they said they couldnt handle doing the downpipe, so obviously that needs to be fixed.

Would fixing that with a full width intercooler be enough? Is there anything else I'm overlooking.
 
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Leadvagas

Member
I would re time the pump with a dial indicator back to factory, 1.54mm and put the boost pin back to stock. Then see what your egt's are. As far as the intercooler goes, I would see what I could do to get T1, pre cooler, and T2, post cooler, temps under load. Generally more inter cooler yields lower temps, but if your T1 number is high to begin with you can only pull out so much heat. Generally the Delta T on an air to air heat exchanger is not over 20 degrees per pass.
 
javelinadave

javelinadave

Administrator
Staff member
Before you go wild double check and see that the engine is well grounded to the bulkhead and to the frame. Next ground the EGT gauge directly to the bulkhead. If things are not properly grounded the EGT gauge my show hotter than what they actually are.
 
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burlsube

Well-known member
Any sense in getting a smaller muffler or running straight pipe with a resonator? I attached a picture. It looks large in comparison to other 110s
 

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Napalm00

Napalm00

Technical Excellence Contributor
Doing a true 3 inch turbo back is going to take a really talented fabricator. I had to pay Bookoo dollars to get a real 3in all the way from the turbo flange back. I have no Muffler no resonator.

I'm also hsve boost pin and full with intercooler and have tuned the pump.

Moving EGT probe location is easy and can be done with a simple drill. You can plug the other EGT hole with an npt pipe plug from any hardware store.
 
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burlsube

Well-known member
Thanks.

Do you think it is worth removing the muffler. Basically, I'm looking to have decent performance, but I also dont want to have my eyes glued on the EGT gauge.

For the new probe location I was told the defender 200tdi manifold is more difficult that than the disco 200 and I should remove the manifold to make sure I do it correctly?
 
Napalm00

Napalm00

Technical Excellence Contributor
I dunno I drilled mine in place, slowly and used a magnet to fish out all the filings . But the manifold is very easy to remove

I greased the bit with thick grease when drilling as well. Same as the tap.helps to catch the schmutz.


Removing the muffler isn't going to do much . Removing intake restrictions, increasing boost , setting the pump lift timing via dial gauge, larger intercooler and correct ip tuning will all go a long way. Unfortunately no real quick answer .

My next step is a custom vnt and water/meth injection
 
javelinadave

javelinadave

Administrator
Staff member
If you have a bad ground all the Allisport bling in the world and a 20" exhaust won't fix it. Just saying........
 
Napalm00

Napalm00

Technical Excellence Contributor
Yea check the gauge first , you will need a boost gauge too to check the boost . Who knows what it was set at the factory
 
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burlsube

Well-known member
Ok. I'll check the grounding first. Should the gauges also be grounded individually or can they share a ground?
 
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burlsube

Well-known member
Napalm00 said:
Removing the muffler isn't going to do much . Removing intake restrictions, increasing boost , setting the pump lift timing via dial gauge, larger intercooler and correct ip tuning will all go a long way. Unfortunately no real quick answer .
Click to expand...

Maybe my answer is with the intake. I do have a snorkel fitted, but I removed the air intake from the snorkel because it seemed to constricting, but not the air intake hose is just sitting in in the engine bay. I just go the wing panel with the intake cut out and the associate parts to set it up to take air from the LHD side. Maybe that will help - after I check the gauge grounding...
 
AdamSanta85

AdamSanta85

Well-known member
Adding more air such as intake, exhaust and I THINK boost (opposite on gas cars) reduce EGT

I would move the EGT probe to the exhaust manifold where it is supposed to be and plug the hole in the down pipe with a cap. Otherwise you will always be guessing.
 
Napalm00

Napalm00

Technical Excellence Contributor
burlsube said:
Maybe my answer is with the intake. I do have a snorkel fitted, but I removed the air intake from the snorkel because it seemed to constricting, but not the air intake hose is just sitting in in the engine bay. I just go the wing panel with the intake cut out and the associate parts to set it up to take air from the LHD side. Maybe that will help - after I check the gauge grounding...
Click to expand...

Doing just one of these isn't going to make a huge difference, tuning is key
 
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burlsube

Well-known member
Got it. I wish there was a local guru. Plenty of rovers in the North East, but diesel knowledge in Mass seems tough. I thought I good handle on the 200tdi, but once I started upgrading stuff it is clear I'm out of my depth.
 
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burlsube

Well-known member
Ok. I verified the ground is good. While the truck was having some other work done I fit a full width intercooler. I would say the EGTS are the same, although recovery seems faster.

Am I missing something? The timing and pump are timed correctly. The only thing that is left is moving the intake to the wing instead of the air intake just drawing air from the engine bay.

As an example, around town in 4th gear with some acceleration I'm at 650-700 ish with the probe post turbo. My gut tells me that is should be lower.
 
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