Thread: Egt gauge is in.

Where did you put the sensor ?

Before or after the turbo ?

I ended up putting it in the dump pipe as I was informed by a mechanic that drilling the manifold can create a weakness and it could crack . I was Also informed that the difference in temps wouldn't be huge. So I erred on the side of caution.

I thought EGT gauges were supposed to go pre-turbo...

Originally Posted by noogie

I ended up putting it in the dump pipe as I was informed by a mechanic that drilling the manifold can create a weakness and it could crack . I was Also informed that the difference in temps wouldn't be huge. So I erred on the side of caution.

Without any ambient temps, boost figures etc and based on the position of your probe.
Its too hot and damage is inevitable.
There is approximately 200 deg difference pre and post turbo however the difference is not linear and cant effectively be applied to provide useful info for safe limits.

There are many posts on EGT, probe position, stable temps, max temps etc.
Have a read of those and after considering actual conditions and set up, make some changes to the map, boost and probe position.

Then maybe consider a different mechanic.

I ALWAYS drill and tap td5 manifols for egt probes, never had any issues with cracking etc, just doesn't happen to them, warping yes, cracking especially due to drilling, no.

and yes around 800 to 900 degrees upstream is what you are undoubtably experiencing, too much for a td5 unless in short bursts infrequently.

jc

Originally Posted by noogie

Ok folks. The EGT gauge is installed and I'm impressed with the figures.

Powering up to a speed of 110 the temp gets up to 660.
But then drops down to around 565 cruising at 110.

At 100 it's around 480 - 500.

Are these figures consistent with where they should be for a remapped ecu td5 with 3" exhaust?

I get lower temps per turbo and mine is no slouch.

Based on where you have decided to place the probe those temps sound really hot to me. As has been said you most probably risk damaging your engine but really its hard to be certain because you put the probe in the wrong place to give you a reliable reading.

You recently had a thread on here asking where to put the probe didn't you? You got all the right advice, shame your mechanic talked you out of it.

IMHO you'd be best to take the probe out and put it in the proper place (and no that's not up your mechanics arse :-) ) In the mean time I'd be laying off the right foot.

Ian.

My concerns about these td5 remaps appear well founded.

I think you're right Dougal.