300TDi egts and where next?

[incisor]

The 130 gets up to 700deg fairly quickly and seems to have plenty left

What does one do get more usability?

Bigger intercooler or ?

[Phil B]

The 130 gets up to 700deg fairly quickly and seems to have plenty left

What does one do get more usability?

Bigger intercooler or ?

Pre or post turbo? Sounds high either way.
Larger inter cooler will help.
I assume your air filter is new?
Best control is your right foot though IMO.

[incisor]

At the egr plate

[Tins]

What mods does it have, Dave? If stock then I'd say the fuel screw is wound in too far, but I'm guessing.

[Phil B]

At the egr plate

Pre turbo then.
I’ve read that 720 deg is the max sustained EGT these motors will tolerate but you would be a brave man to run it that hot for long.
I’ve also read that a better (read larger) intercooler can decrease the EGT substantially but others will have more advise regarding make, size and cost
IME keeping the filter clean and installing an EGT alarm helps manage the EGT’s.

[AK83]

back fuelling off a little.
(little by little so you maintain some level of performance).

OR
Is the IC blocked on the outer surfaces with gunk/dust/mud/buildup? Hose it down.

what sort of EGT do you get on a steady cruise(say 90-100) on a flat road?

So you get black smoke from the exhaust?

I've got my D1 setup so that it puffs a small bit of black smoke once the right foot is pressed down(ie. initially), but then once boost starts to build the black smoke disappears, even tho I may press accel a bit more.
I suppose I could tweak the turbo boost compensator spring(starwheel) to reduce/eliminate the initial black smoke puff .. but ATM it's going OK, and EGT is controllable.

I have a double core(thick) IC to install one day, but it requires a bit of grinding of the (redundant) steering box mount on the top of the chassis near the base of the IC.

That's the commonly recommended method to maintain EGT and reasonable power levels.

[Pub247]

Add more boost lean it out and itll lower egts

[incisor]

back fuelling off a little.
(little by little so you maintain some level of performance).

OR
Is the IC blocked on the outer surfaces with gunk/dust/mud/buildup? Hose it down.

doesn't appear to be.

what sort of EGT do you get on a steady cruise(say 90-100) on a flat road?

430 - 450 pulling a 1 tonne van @ 100 kph on flat ground from memory

long slow hills i back off @ 720 and drop a gear to maintain momentum etc etc

So you get black smoke from the exhaust?

if laboured in a gear i get some, esp if i take off in 2nd with a load on

I've got my D1 setup so that it puffs a small bit of black smoke once the right foot is pressed down(ie. initially), but then once boost starts to build the black smoke disappears, even tho I may press accel a bit more.
I suppose I could tweak the turbo boost compensator spring(starwheel) to reduce/eliminate the initial black smoke puff .. but ATM it's going OK, and EGT is controllable.

I have a double core(thick) IC to install one day, but it requires a bit of grinding of the (redundant) steering box mount on the top of the chassis near the base of the IC.

That's the commonly recommended method to maintain EGT and reasonable power levels.


answers in red...

ta

[incisor]

What mods does it have, Dave? If stock then I'd say the fuel screw is wound in too far, but I'm guessing.

MR Auto did the pump timing when they did the timing belt.

anything else predates me so is a mystery shall we say...

the thing has heaps of torque and pulls the 1 tonne van with ease

i generally manage to keep it around a max of 720 but sometimes it is at 760-780 before you realise it is working that hard.

am a lot wiser about when i need to back off after the trip to cooma....

will read up on the fuel screw adjustment.

pulling the van i was getting around 520-550 klms out of a tank of juice which i thought was okay ?

ta

[weeds]

I’d have it dyno tuned, a bit more science than a workshop tweak

Mine was also done st MR but was very smokey......after the dyno tune smoke went away and EGT’s spit on.

Fuel economy looks good, how many litres??

[Tins]

MR Auto did the pump timing when they did the timing belt.

anything else predates me so is a mystery shall we say...

the thing has heaps of torque and pulls the 1 tonne van with ease

i generally manage to keep it around a max of 720, but sometimes it is at 760-780 before you realise it is working that hard.

am a lot wiser about when i need to back off after the trip to cooma....

will read up on the fuel screw adjustment.

pulling the van i was getting around 520-550 klms out of a tank of juice which i thought was okay ?

ta

I don't know what others think, but prolonged EGTs of 720 on a regular basis would scare the hell out of me, let alone 780. I reckon about a 1/4 turn back on the fuelling screw would be the very first thing I would try.

It seems lots of people play with the fuelling screw first, when really it should be last. Sure, the results are immediate, but have deleterious effects on economy and longevity.

Have a read of this: http://www.landroverweb.com/Pdf-files/Tuning_Land_Rover_Tdi_engines_Rev_2.pdf

It's all pretty simple, and a 300TDi can go as well as a stock TD5 if done correctly.

[TheEntertainer]

I don't know what others think, but prolonged EGTs of 720 on a regular basis would scare the hell out of me, let alone 780. I reckon about a 1/4 turn back on the fuelling screw would be the very first thing I would try.

It seems lots of people play with the fuelling screw first, when really it should be last. Sure, the results are immediate, but have deleterious effects on economy and longevity.

Have a read of this: http://www.landroverweb.com/Pdf-files/Tuning_Land_Rover_Tdi_engines_Rev_2.pdf

It's all pretty simple, and a 300TDi can go as well as a stock TD5 if done correctly.

Keept it under 720, i have my madman set on 650 and hardly ever go over.

[djam1]

Out of curiosity how quickly does the egt come down when you stop?

[AK83]

Another area of note is the exhaust.
Does yours still have the mufflers?

Could be clogged if old.
Removal of centre muffler helps.

I had mine removed(D1 tho), and made too much noise.
Had a straight through added to the centre .. still too much droning.

Had another shop add a rear muffler(stupid thing to do).
Got rid of the droning, but that's when my EGTs seemed to elevate more so.
Maybe I should have gone with a straight thru/resonator type, but I really hated the droning on what is otherwise a pretty quite cruiser on the highway.

[incisor]

Out of curiosity how quickly does the egt come down when you stop?

down to 320 quite quickly and then slowly from there down

from memory

[BigBlackDog]

that sounds pretty normal to me. mine blew lots of smoke until i replaced the FIP and injectors. New Cylinder head dropped the temps about 80 for no other change.

A diesel is like a camp fire, more air (boost) will lower the temp, more fuel will increase it. Fuel is the energy, temperature is the limitation. You can grab a boost T pretty cheaply and up the boost by even a few psi that'll bring your temp down for the same fuel amount. then you can be happy its cooler, or you can pump more fuel in. I think the stock 300 turbo is ok running about 18 psi max? I am running about 17 at the moment.

Rod

[uninformed]

300tdi is undercooled in factory tune. Both cooling system and intercooling. Bigger intercooler front mount if possible. And do the guard vent mod as well IMO

[Tins]

Keept it under 720, i have my madman set on 650 and hardly ever go over.

Mine will get to 690-700, but I back off quick at that point. I don't mind it going to 720 at peak, but not for more than a few seconds. Who needs melted pistons for the sake of some torque?

[BigBlackDog]

Other thing that works as an inter cooler is out of an Toyota MR2 - same height and width but double thickness, so fits in the hole

[jbe]

On my Td5, a ceramic coated exhaust manifold brought the EGTs down approximately 100deg on average. A bigger intercooler lowered them another 50deg.

[Pedro_The_Swift]

Gees Inc,, it must go like a train without the van on....[smilebigeye]

[AK83]

On my Td5, a ceramic coated exhaust manifold brought the EGTs down approximately 100deg on average. A bigger intercooler lowered them another 50deg.

On my D1, removing the front grille lowered both coolant temps and EGT.
Coolant by about 10-15°C in hot(35+) ambients.
EGT by about 50-ish or so .. hard to say exactly as conditions, road, load, etc all vary.

D1 front grille is quite restrictive, dunno about the Defender tho.

[incisor]

Gees Inc,, it must go like a train without the van on....[smilebigeye]

:p

i had to back off going up hills with the van on because it was going over 700 many many times.

more often than not i had to drop down 2 gears and 30 kph to stay under 700.

which is why i am asking the question

[86mud]

Inc, go see Rob at Brisbane Dyno Tuning. He is a 300tdi expert (Weeds put me onto him)

My 300Tdi was dyno tuned by Rob a few years ago. I have posted the Dyno results several times on the forum but here they are again. This transformed the driveability of the Defender.

138786

My 130 weighs 3Ton in normal driving mode with 285/75 MTZ's tyres on 16 x 8 rims. I have upgraded to an Allisport intercooler, straight through 2.5" exhaust (no mufflers at all), silicone turbo hoses and I have even had the kink taken out of the steel pipe between the turbo and the intercooler (there is a press bend in it to get around the suspension strut cover).

The truck is now great to drive. I don't tow a caravan and never plan to, but I do regularly tow a dirt bike trailer with 3 bikes and camping gear. I do keep a close eye on EGT's going up the range (like behind Landsborough or Cunninghams gap) and always drop down a gear when temps get near 700.

Normal highway cruising - I get EGT's of 450 - 500

My EGT probe is before turbo (EGR blanking plate).

Sounds like your pump is not tuned properly. Like others have said, a clean air filter (genuine) is a must. Also check/clean your existing intercooler, pipework and intake manifold (oil can build up in these areas).

[incisor]

dropped the intercooler this afternoon and will give it a good cleanup and see where we end up.

certainly looks like it needs a clean...