Thread: 300TDi egts and where next?

Originally Posted by jbe

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.

Originally Posted by Pedro_The_Swift

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

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

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.

Dyno Data.pdf

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).