1HZ EGT Temps.

I've got mine fitted south of the turbo. Whilst it's often hard to get mechanics to define what is a "top end" temperature for a vehicle, my very reliable mechanic (Aaron of ATOC autos in Belgrave, do a search on this forum for suitable references to his credibility) said that anywhere around 600C is the DEATH ZONE for a diesel. Having melted a hole thru the top of a No.4 Piston previously, I wouldn't even by for 6 to 7 hundred C. Got to admit I sh1t myself if it gets past 500C. I may be paranoid but hell, when you've paid a lot of dough for a new engine, I reckon I'm within my rights! (lol) Don't push it!

Mick

Image Could Not Be Found

I fit Denco turbos in my workshop to 1HZ engines. They state for EGT guages fitted after the turbo to not exceed 500 - 550 deg at full throttle under load for 2 minutes otherwise goodbye warranty.
I hope this helps

We always set ours up to a maximum of around 550, 600 if the customer wants that little bit more and that is after turbo just past the dump flange normally.

The turbo will reduce the heat around 100 degrees so if your seeing max of 600 before turbo you will be fine but may not be getting the max out of your setup.

Drop in and ill dyno it for you.

email
bagtp1atiinetdotcomdotau.

MAtt

I have EGT after turbo. Normal highway temps 450- 500.
If I really work it up a long steep hill- can peak at 600 for a short time.

G'day Matt,

I get much the same from my set-up as well. Highest ever is about 620oC in the NT trying to keep up with flow of traffic on the highway at 120kph into a head wind (FULLY loaded). I have the probe pre turbo as well.

Cheers mate, hope your well,

Ross.

I have a hdft factory turbo motor and intercooler before it....my pyro is in the exhaust manifold and its maximum is 520 at the moment...550-600 post turbo would be absolute max...i wouldnt go past 500 for long if your not intercooled....temp difference pre to post can be as much as 200 degrees...the egt is supposed to be an indication of whats happening in there, your safe max temp will depend on whether your motor is intercooled or not, at boost, turbo temps can reach 200 degrees, which adds to the pistons heat more than if for instance you were intercooled and incoming charge was 60 degrees. It will also depend on what type of motor you are running, the 1hz will crack the head first.... so to answer your question, i think there is a little room for adding fuel in your case, but its always better to eer on the side of caution, if you were in the kimberley towing in summer, that gauge would be reading higher....so its set up well to do all things reliably. If you were to intercool, that temp would drop a little and allow you to add more fuel for more power.
Andrew

i have a 92 4.2 diesal patrol fitted with a super charger. The egt guage is fitted after extractors meet the single pipe. when towing up a long haul and giving it heaps the temp has been up to 700 deg c, the temp guage on the dash sits on normal. the s/c was fitted at about 200,000ks and has now done 360,000ks with no problems at all, no oil consumption at all and still get 12lts to the 100 and when towing all up 3.5 tonne get about 14 to 15 lts to the 100. have heard all the stories about egt temps but have never worried about it. unloaded sitting on 100ks temp sits on 250-300deg, mainly use the guage for fuel economy, cooler the temp the less fuel used. go the GQ. col

I have a 2005 GXL TD and the EGT is mounted 2" after turbo. Doing 100k with 2.8t van on never gets over about 410deg

Hi guys,
Thanks for all the replies. Seems between head and turbo stick to under 600-700 and I will be right. I have sent Matt an email and will get some dyno figures done on the old girl. Will let you know how I go.
Thanks once again
Matt