EGT reading at idle

Gday
Stop fiddling , thats why they break.

HEY BONZ,
Article in latest Caravan & M/Home mag (copy 165) on EGT'S.
Apparently there is no known answer.
I am led to believe there is no known documented safe EGT, but the higher the engine is tuned the higher the risk of damage. Makes sense.
If u ever find a true reliable answer, publish it.

Tks,
Diesel

Sir Bonzforth,

I presume the EGT is aft of the turbo but by how far from the Turbo in your case I'm trying to gauge. My 3L used to sit at about 160-172 at idle but I was pretty damn close to the outlet manifold. 260 to 350 was standard for cruising and over 400 in times of high stress such as towing up hill. Remember to add at least 100C to gauge a more realistic cylinder temperature.

Cheers

Mick

Hi Bonz

I can't say whether it would be the same but my V8 79 series landcruiser idles at about 500rpm and the EGT sits at around 80c. The sensor probe is 50mm from the turbo flange as the only place I could place it.

When running without load on the hwy at 100km it sits high 300c but when fully loaded with work gear and towing trailer at 100km it will sit 400 to 450c.

I have heard to try to never go over 500c.

Cheers

Serendipity

Hi Bonz


I'm in the market for another EGT gauge. My current one did not last one trip and it's readings were nowhere as precise as yours.

Mine started at 200 and went in readings of 100

Any info on brand etc would be appreciated

Cheers Teza

Hi Bonz, that sounds ok, but we need to know if the probe is in the exhaust pipe or in the manifold, as there is about 200 deg difference. If in the manifold it will read 200 deg lower than in the exhaust.
Mine is in the manifold and on a warm day going up a 10% and a long haul I can see 600 no trailer in 5th gear doing $1.10.
I would recommend that you do not exceed 750 if its in the manifold or 950 if in the exhaust. also I wait for mine to get down to around 160 before I turn the motor off.

If it's any help I have a 120 Prado with 1kz and temp is 130 deg at idle and 370 deg at 110kph with no load.

Sits around 450-500 deg towing my caravan at 100kph on the flats.

Have never had it go over 640 deg when towing the van even up the Toowoomba Range.

I use a VDO pyro and the probe is in the dump pipe.

I have an EGT in the exhaust 100mm from the turbo outlet. I run a TOYOTA 1HZ motor with an after market turbo by the way.

Under normal conditions mine sits on 250 to 300 celcius, but under load , towing a caravan it Sits on 350 in flat country in mild conditions. The temp can go up to 400C in a head wind. When I need to push for a minute or two it can go up to 500C for a very brief period but at 500 I back off. I don't like going over 350 C over a long period of time.

I was told not to go over 500C under any circumstances (by the people who fitted the turbo and the EGT).

WBS

Trendsetters

It is my solemn duty to to bring to your attention that the originator of this post/thread in asking the question that he did, had not one iota of interest in your turbo setups, EGT gauge, or where you have your thermocouples located.

It was all a ruse to establish if his latest 'Sir Bonzalot-ism' whilst installing the subject EGT gauge and thermocouple had resulted in a fatal outcome to same.

I don't dare mention what really happened for fear of dire retribution, however it would be fair to say that I am still ROFLMAO x 1000 at the mental images that come to mind concerning the said near catastrophe.

Just pure gold for camp fire war stories.

DD

Gday Sir Bonz
You can tell us all about it at the next run to Muzbry's corner..