Td42 egt

[michaelgeo]

Hi All. What is the high limit of the TD42 EGT.

[AB]

Anything over 500 degrees is getting on the high side mate.

Especially over 550.

[guterra]

Something that I have always wondered was... Can 4.2 egts be a little higher than 3ltrs? Reason is the turbo on a 3ltr is a vnt type, which is more prone to heat failure than a STD turbo setup - like what is on a 4.2.....

You never (or very rarely) see vnt turbos on petrol vehicles because of the hotter exhaust gases, which are known to kill the vnt setup...

I understand the block heat still has an effect, but just thought a 4.2 (or even a 2.8) would be more reliable at a hotter egt.

What do others think?


And for the record, I never allow mine over 550. Everyday driving sees me around 250-400

[michaelgeo]

Is the degree celsius or fahrenheit

[-ET 4wd-]

definately no more than 550 degrees C and that is post turbo or after turbo
mine is 315 at 110km/hr on 14lb's of boost and it is 550 on 17lb of boost at 170km/hr flat to the board riding the brake.
I only know this as i had the diagnosis 'box' on my lap as the diesel tuner was drivin, he was very happy with it and said it was one of the most lively 4.2's he has ever driven....gotta be happy with that!

Steve.

EDIT- mine also has a Denco turbo with a 3 inch pipe from dump to tip with no muffler, as soon as the tuner took his foot off the floor ( lifted 1/2 inch on pedal) it dropped to 475 degrees pretty much instantly, we were workin it out as hard as we could to see how far it would go.

[TuffTD42]

All the trucks I drive (semi's, Rigid's when fitted with a egt gauge) all run to 600 deg c. It dosen't matter what engine or what turbo any more than 600 & things may start to go pear shaped. Most say no more than 550 deg c just to be on the safe side. I run my TD42 to 550 deg C all the time, have done for the last 2 years without any drama's.

Pyro sender is just after the hot side on turbo in the dump pipe.

Cheers Jono.

[MudRunnerTD]

Yep i can get mine to 550 merging onto the freeway! 15psi and post Turbo in the Dump pipe, 3" exhaust all the way. No Dramas.

[Ben-e-boy]

I have never got mine past 450 c 13psi 3" exhaust turbo to tip no muffler

[-ET 4wd-]

I have never got mine past 450 c 13psi 3" exhaust turbo to tip no muffler

tickle the fuel up!!

Steve.

[joel14]

tickle the fuel up!!

Steve.

my gu patrol is auto with 3inch pipe non intercooled at the moment
its running 14psi boost standard turbo
gave fuel about half a turn from standard and on the hills its max temp is 500degc post turbo about 50mm away from turbo.
do you think there is much more room for more fuel?.
are these boost levels safe for standard turbo?

cheers guys