Traded Clock for EGT

[robinimpey]

I increased my boost on my turbo so I thought it a good idea to pick up a EGT gauge so I don't cook my engine. This is what I came up with. Picked up an Auber digital EGT gauge with probe for less for $90.00. It has an adjustable high temperature warning that can be just a light or an audible alarm. Probe is mounted just south of the exhaust manifold a couple of inches.

Now all I need to know is how hot is too hot. Anyone know? Seems like cruising down the highway at 90kms it runs anywhere from 500-550 f.

But what about a clock you ask? No problem, got one on my stereo.

[Erebus]

Nice setup. But your temperatures are way way lower than mine. Are you perhaps showing Celsius, not Fahrenheit? I show 500-800 F running around town, and on the highway going up a steepish hill it can get to 1300 degrees without really trying. Wayne (crusher aka Luxury Imports) installed my pyro, he recommended trying to avoid getting it over the 1000 F.

As for cool down after driving, I haven't heard anything specific anywhere, so I came up with 500 degrees as the temperature it has to drop to before I shut it off. Balances between cooling and spinning down the turbo with waiting forever.

[robinimpey]

But your temperatures are way way lower than mine. Are you perhaps showing Celsius, not Fahrenheit?

I'm on Fahrenheit and I can get my temps up to what you're talking about too if I'm pulling a hill and stepping on it. I've only given it a 30 minute road test since I've installed it so I'll keep an eye on it over the next little while and report back in and we can compare notes.

For now I will venture to keep mine under 1000 F as well until I hear something different.

Thanks R

[docsavage]

Can you post a picture of where the probe is on the exhaust, all I have to do is install the probe and my EGT is ready to go. Just need a few ideas of where it could go.

Thanks

James

[Erebus]

I didn't do my install, so I can't really say where it is, but crusher said he ALWAYS puts the sensor in AFTER the turbo. Cause when you drill the hole, you are bound to have some shavings get into the pipes, and you can imagine how the turbo would like that.

[robinimpey]

This is where I put mine. I just drilled and tapped the pipe for now as I'm not sure if I'm going to put a larger pipe on it or not. I put a little high temp silicone on it in hopes that it wouldn't seize in the pipe before I get some real anit-seize goop. I picked this particular spot because it is on top of the pipe where it would be protected and it is also where I could fit my drill.

In the manifold close to the hottest cylinder would be the best place to get the most accurate reading, but we're not running high performance racing machines here so I think putting the probe in the down pipe is acceptable. I have heard of guys drilling and tapping pre-turbo using a shop vac and then a magnet after to make sure you get all the little bits. But as you may already know their are not a lot of places to easily drill and tap the manifold on a Delica.

Dos centavos mio.

[psilosin]

Cool digital gauge...where did you get that?

Since you installed the EGT temp sensor after the turbo remember that the temperatures can be 200-300oF cooler than pre-turbo so when you are comparing operating temps makes sure you are comparing apples to apples. I try to never let my temps get above 1000oF pre-turbo (ie 800oF post) but I think its around 1200-1300oF pre-turbo (1000-1100oF) where temps are dangerous.

If any of you are doing EGR delete mods on your vehicles an excellent place to locate the temp sensor is in the blanking plate you would make for the exhaust manifold where the egr pipe was. Then you don't have to make permanent mods to your exhaust manifold to get pre-turbo data.

[robinimpey]

I bought my gauge online, eBay of course! http://cgi.ebay.com/DIGITAL-EGT-THERMOM ... m153.l1262

I really need to get out on a road trip to find just where my temps are running at different speeds, pulling a hill, etc. For now I'm keeping it below 1000oF, but it seems like it wouldn't be too hard to keep it floored for a while and get the temps well over 1200oF. I guess that's why we put in the pryometer so we know.

[bae146]

I bought my gauge online, eBay of course! http://cgi.ebay.com/DIGITAL-EGT-THERMOM ... m153.l1262

I really need to get out on a road trip to find just where my temps are running at different speeds, pulling a hill, etc. For now I'm keeping it below 1000oF, but it seems like it wouldn't be too hard to keep it floored for a while and get the temps well over 1200oF. I guess that's why we put in the pryometer so we know.

So in our quest to find Proper EGT limits to watch for I did a little surfing on the net and found some good information. When our vehicles are cruising down the highway and the wastgate is closed, the temperatures that your are monitoring are a couple hundred degrees less than what is being read on your guage if it is post turbo. When you are driving up a hill and you are at max boost, the wastgate is open and you are now reading your actual EGT. If you have a boost guage installed you will see a dramatic rise in temp as the wastgate opens and allows exhaust to bypass the turbo and go straight down the exhaust pipe. So I still don't have an exact number but I would think that if you are driving under load and your wastgate is open, your max EGT would be 1300 F? Does this make sence to you all?

[Profister]

the temperatures that your are monitoring are a couple hundred degrees less than what is being read on your gauge if it is post turbo.

I am not sure how to read the above properly but 1300F makes sense to me as I had 1500F once climbing on Coquihalla and thanks to the visual shock I drive differently now.

[bae146]

the temperatures that your are monitoring are a couple hundred degrees less than what is being read on your gauge if it is post turbo.

I am not sure how to read the above properly but 1300F makes sense to me as I had 1500F once climbing on Coquihalla and thanks to the visual shock I drive differently now.

When you are running all your exhaust gasses through the turbo they are converting pressure and heat into work on the intake side of the turbo. This takes energy. So your turbo absorbs energy out of the exhaust stream and your EGT guage reads lower that if your EGT guage was reading temperatures pre turbo. Does that help?