Does this look like the right stuff? (EGT)

**Blknight.aus** · 24th September 2009, 04:45 PM

thats what you want dullbird, Ive fitted a couple of those units to TD5's (easy job to do with the egr removal mod.

**dullbird** · 24th September 2009, 04:47 PM

Originally Posted by Blknight.aus

thats what you want dullbird, Ive fitted a couple of those units to TD5's (easy job to do with the egr removal mod.

So you dont think there is an issue with the length of the prob dave?

**Blknight.aus** · 24th September 2009, 04:55 PM

not in the TD5 when you do the EGR removal mod as it bolts nicely into the blanking plate once youve tapped it and providing you dont screw it down too deeply sits about where I'd like to put it. (but its really only reading the flow from pot #1 not the overall average of all pots)

havent yet had the cause to be playing with the puma donk. and as with all things if you leave the engine stock in theory its not possable to generate EGT;s that are fatal to the engine.

**dullbird** · 24th September 2009, 06:35 PM

Originally Posted by Blknight.aus

not in the TD5 when you do the EGR removal mod as it bolts nicely into the blanking plate once youve tapped it and providing you dont screw it down too deeply sits about where I'd like to put it. (but its really only reading the flow from pot #1 not the overall average of all pots)

havent yet had the cause to be playing with the puma donk. and as with all things if you leave the engine stock in theory its not possable to generate EGT;s that are fatal to the engine.

naaahhhh this is for my disco........thats why I said it will go into the blanked plate of the egr.

fitting it as the pump has had a tweak and is or has started to bellow out black smoke up steep!! hills under load when it changes down to 2nd.

So fitting it to keep a check on what the temps are doing...its going back to the garage in the near future to put it on the machine again and back it off a tad.......

**bblaze** · 24th September 2009, 10:28 PM

Hi DB
My probe is only about 45mm long, I tapped the thread into the blanking plate at an angle so the probe went nearly straight in. My gauge responsed as I would expect, nice steady rise when the foot is hard down uphill, lift the foot and it falls nicely and maintains a steady temp when crusin.
cheers
blaze

**Blknight.aus** · 25th September 2009, 05:25 AM

an easy fit to the TDi, I think you may even find that on the back end of the intake manifold theres an unused unfiished casting point that should give you a good sensor location near pot 4. I suspect that it was intended for the fitment of a heatshield.

**steveG** · 27th September 2009, 08:42 PM

I got an email back from Auberins - they have a new probe with a straight section 45mm longer than the ones on the website.
I removed my probe and measured the distance from the outside of the fitting to the back side of the manifold - roughly 120mm
The new probe should give 80mm protrusion, which should put right into the middle of the gas stream.
As soon as I get a P/N or instructions on how to order I'll post them up.

Steve

**dullbird** · 27th September 2009, 09:56 PM

Thanks mate...looking at buying mine next pay day..

So some part numbers would be good

**Rosscoe68** · 27th September 2009, 10:20 PM

Thermocouple with 1/4" Type K Probe Chromel/Alumel - eBay Meters, Test Equipment, Electrical, Business, Industrial. (end time 06-Oct-09 16:36:56 AEDST)

**Bush65** · 28th September 2009, 08:15 AM

Originally Posted by dullbird

naaahhhh this is for my disco........thats why I said it will go into the blanked plate of the egr.

fitting it as the pump has had a tweak and is or has started to bellow out black smoke up steep!! hills under load when it changes down to 2nd.

So fitting it to keep a check on what the temps are doing...its going back to the garage in the near future to put it on the machine again and back it off a tad.......

If you want to see what the real EGT at the turbo you need to have the probe extend out of the cast in pocket for the egr and into the gas stream. Also not touching against the side of the manifold - so position and angle in blanking plate is important.

The small diameter probes generally respond quicker, but you need to see the manufactures spec sheets to be sure. 1/8" respond quicker than 1/4" - the one you listed was 3/16" so probably not too bad.

Some people see the numbers in the display changing and assume their probe responds quickly - but this is pie in sky stuff.

Response is measured as the time for the reading to reach the true value when the temperature is changed by a particular step value - not for display reading to change from one incorrect number to another incorrect number.

As you increase the load on the engine the egt will climb. IMHO keep an eye on how rapidly it climbs and if it is approaching say 650C quickly and there is still a good way to the top of a hill, then it is time to ease off with the right foot or grab a lower gear to get engine revs back up.

Had the pump been tweaked for some time and only recently starting to blow smoke. If you are blowing smoke under load, then egt is going to be up.

It is more likely that your not getting as much air as before, than for the pump calibration to have changed.

However, when a pump is tweaked, it needs to be checked with a good load on the engine to be sure that egt will not get out of hand later. Egt will not get anywhere near as high on a steep hill when the vehicle is empty, compared to pulling a trailer or with a big load of camping gear, extra fuel and water, or the like.

Thread: Does this look like the right stuff? (EGT)

Thread Tools

Bookmarks

Bookmarks

Posting Permissions