Max. EGT and probe position

Thanks all for the replies. The probe is fitted post turbo. I was aware most on here suggested pre turbo. However anyone in the industry here didn't want to fit pre turbo. In the end I went with the advice of a isuzu truck specialist who did a great job on the motor and he fitted post turbo. The motor is running smoother and quieter than ever.

Anyway the guage was set for F. I changed it to C. I managed to get it to 400 degrees on a steep hill. I have set the alarm at 700 degrees. I am wondering if the max temp in the isuzu manual referred to by Murray is measured pre or post turbo. It was not hard to get to 400 degrees.

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Originally Posted by rar110

Thanks all for the replies. The probe is fitted post turbo. I was aware most on here suggested pre turbo. However anyone in the industry here didn't want to fit pre turbo. In the end I went with the advice of a isuzu truck specialist who did a great job on the motor and he fitted post turbo. The motor is running smoother and quieter than ever.

Anyway the guage was set for F. I changed it to C. I managed to get it to 400 degrees on a steep hill. I have set the alarm at 700 degrees. I am wondering if the max temp in the isuzu manual referred to by Murray is measured pre or post turbo. It was not hard to get to 400 degrees.

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I run mine post....will be fitting pre on the next though, but I have mine set at 500c, as if I maintain that temp.....only by towing 3+ton and hiting huge hills, it will lift engine temp


700 degrees C post turbo, you won't need you alarm, maybe a quick flick, but maintain it and it will be yucky:D

To put it into perspective.
On a flat road at 100km/h mine runs ~430C preturbo. This is 9psi boost, 2000rpm.
Temp drop across a turbo is a complete guessing game. It changes with EGT, boost and volume flow.

Get yourself a drill and pipe tap and move it. I can show you where mine is as my manifold was originally the same. It's had it's neck cut and flipped, but it's still relevant.

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Originally Posted by rijidij

reading the Isuzu workshop manual, the "maximum allowable temperature measured at turbocharger intake", is 750 degrees. (see below)


https://www.aulro.com/afvb/images/im...10/07/1622.jpg

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Going by what the manual states turbo intake is pre-turbo.

Rob W

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Originally Posted by Dougal

To put it into perspective.
On a flat road at 100km/h mine runs ~430C preturbo. This is 9psi boost, 2000rpm.
Temp drop across a turbo is a complete guessing game. It changes with EGT, boost and volume flow.

Get yourself a drill and pipe tap and move it. I can show you where mine is as my manifold was originally the same. It's had it's neck cut and flipped, but it's still relevant.

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I tell you what thats about spot on to my set up with 35's on 4:11's

Add another 50 deg with the trailer on

Justin

Have a look on thermoguard website, they give a in depth explanation as to where to put them, why and how.
They also explain supercharging(Turbo) and charge cooling(intercooled).

The fella has a Landy himself and he supplied mine and in return I supplied some figures once my Gas was fitted.
Anyhow, it does a great job of technical factual information if that is what you are after.