The great EGT comparison thread! - Defender Source
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  #1  
Old August 14th, 2013, 11:53 PM
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The great EGT comparison thread!

Now that I finally installed my EGT I am eager to compare numbers as I don't have the slightest clue of what is "normal". How about we come up with some common measuring points that we can all use as reference for our individual readings? For example, yesterday I averaged 545F at 3000RPM in 3rd gear. Perhaps 3 reference points in 3 different gears, the last one being on the freeway? I know there are lots of variables (uphill, downhill, ambient temperature, etc) but I'm just looking for a ballpark of healthy behavior. Who's in?
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  #2  
Old August 15th, 2013, 12:13 AM
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less than 500f until warmed up and out on the highway. Normal highway speeds & load 750/800. Foot in it or towing or 70+ and temps came up. Steep grade/ heavy foot 1250 then back off for a few seconds, gauge moves both directions very quickly. This with fueling cranked up and full width intercooler. You will not see higher temps if your fueling isn't turned up. I don't think the factory tune settings will even get you to 800 degree's. The idea behind running the gauge is to be able to increase fueling/power & torque but be able to monitor temps so you don't hurt anything.
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Old August 15th, 2013, 12:20 AM
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Thanks for the numbers D. I'm going on a trip end of the month so I'll be able check highway use under load then. I get the idea behind it. I got it because I recently installed a ceramic coated VNT and the PO messed with the fuel pump so I have lost the factory tuned setting. I turned it down because it was over fueling and I am now looking to check what is normal behavior before I decide to turn it up or not. I have a full width intercooler as well.
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Old August 15th, 2013, 10:10 AM
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I tweaked the fueling slightly but found my EGT's to come down actually - I can only guess it wasn't well tuned before and is running more efficient now. I'm around 750/800* at 65mph when mostly flat. A slight incline can bring that up 100* easily. Also, if I have say 3 people and gear it will run about 75* higher on average so you can tell it is working harder. Like Doug said, it moves fast in both directions. The highest I've seen was 1100* in 3rd gear pushing it up a long/steep hill. This is in a 5k pound RRC with a 1.2 tcase - I think once I have some lower gears installed it will help bring down the EGT's since it feels like it struggles a bit now. Unless you have a light D90 or 29" tires, I wouldn't recommend the 1.2 case with the Tdi.
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  #5  
Old August 15th, 2013, 10:44 AM
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http://www.defendersource.com/forum/...ead.php?t=1567

This thread might be helpful to you.
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  #6  
Old August 15th, 2013, 11:00 AM
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Quote:
Originally Posted by Frank84 View Post
I tweaked the fueling slightly but found my EGT's to come down actually - I can only guess it wasn't well tuned before and is running more efficient now. I'm around 750/800* at 65mph when mostly flat. A slight incline can bring that up 100* easily. Also, if I have say 3 people and gear it will run about 75* higher on average so you can tell it is working harder. Like Doug said, it moves fast in both directions. The highest I've seen was 1100* in 3rd gear pushing it up a long/steep hill.
Checking numbers while cruising means nothing. You can only compared extended full throttle peak readings. I have an alarm on mine. If it goes too high, you simply lift off a little.
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Old August 15th, 2013, 11:15 AM
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I have read it several times. I'm familiar with all the EGT related threads on this forum. Looking for more information beyond that.

Quote:
Originally Posted by Jymmiejamz View Post
http://www.defendersource.com/forum/...ead.php?t=1567

This thread might be helpful to you.
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Old August 15th, 2013, 11:18 AM
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John, did you have to connect an external buzzer in order to use the alarm function or can it be used I without an external buzzer?
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Old August 15th, 2013, 11:22 AM
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I have a buzzer. One of these: http://www.auberins.com/index.php?ma...roducts_id=218
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  #10  
Old August 15th, 2013, 05:08 PM
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None of these measures are worth citing unless we know if the probe is pre or post turbo.
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  #11  
Old August 15th, 2013, 07:11 PM
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Immediately post turbo cruising at 60/65 flat terrain arround 550/650. 1.2TC 32" tyres. Anyways it goes up and down depending on a lot of factors. I have the alarm set to 1000 and you shouldn´t go past 1300/1350.

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  #12  
Old August 15th, 2013, 07:14 PM
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Mine is pre.

Quote:
Originally Posted by Overlander View Post
None of these measures are worth citing unless we know if the probe is pre or post turbo.
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Old August 16th, 2013, 08:52 AM
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I think one of the interesting things about this thread is that it might shed some light on whether ceramic coating headers, etc will indeed raise EGT's. Seems like there's a lot of opinion on this - both for and against - and having a 300 tdi with TGV that's had so much ceramic coated seems like a great way to benchmark against similarly setup vehicle without the coated headers, turbo...

Just my .02 since I've been staring at a 2.8 in a crate deciding whether to go purdy or leave it ugly...
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Old August 16th, 2013, 10:15 PM
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Ideally I would have installed the kit and EGT and taken readings before and after I did be ceramic coating. That is the most accurate way since there are so many variables between our different truck configurations and most of us have adjusted our fuel pumps. I'm hoping that someone else is interested enough to volunteer in this experiment.

I'm looking forward to the real road trip test where I will be fully loaded and pulling a trailer for several hours. I'm very happy with the ceramic coating so far and I will report back after my trip.
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Old August 19th, 2013, 11:28 AM
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300tdi with Ali sport direct replacement intercooler 285's and a 1.4 in a 110 with the pump turned up.
Pre turbo I can get into the 1300-1350 fairly easy on long pulls. I still have the cat in the exhaust but straight piped after that. Running with the 7.50's on its hard to get it above 1270...
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Old August 19th, 2013, 12:16 PM
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Quote:
Originally Posted by exmod110 View Post
300tdi with Ali sport direct replacement intercooler 285's and a 1.4 in a 110 with the pump turned up.
Pre turbo I can get into the 1300-1350 fairly easy on long pulls. I still have the cat in the exhaust but straight piped after that. Running with the 7.50's on its hard to get it above 1270...
Dump that cat!
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Old August 19th, 2013, 01:18 PM
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Just returned from Nationals, drove Hwy 50 across NV & UT both directions. LOTS of mountain passes. I run stock diameter tires, 31.5", TC .211, Zf auto, IP turned down 1/8 turn from stock. 2-1/2" EGR sensor in EGR plate. EGR temps never got over 1175 with boost at 14.5psi. Coolant temp never got over 208 with a 198 thermostat.

23 MPG and with my extra fuel tank, 700 miles between fill-ups.
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Old August 19th, 2013, 02:30 PM
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Quote:
Originally Posted by Dennis View Post
Just returned from Nationals, drove Hwy 50 across NV & UT both directions. LOTS of mountain passes. I run stock diameter tires, 31.5", TC .211, Zf auto, IP turned down 1/8 turn from stock. 2-1/2" EGR sensor in EGR plate. EGR temps never got over 1175 with boost at 14.5psi. Coolant temp never got over 208 with a 198 thermostat.

23 MPG and with my extra fuel tank, 700 miles between fill-ups.
Damn.
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  #19  
Old September 7th, 2013, 04:27 PM
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I got back from my 600 mile road trip to the San Juan Islands last Sunday. Fully loaded, pulling a trailer with Zodiac I got 18 MPG driving up, 22 MPG on the return. The EGT's would be in the 700F - 900F on the freeway. Once or twice (uphill) it briefly dipped into 1070F but I would make a habit out of keeping it under 900 which is the default alarm set up on the Auber Gauge.

I didn't get the Boost gauge calibrated until I got back and I set it to read PSI for now. What would be considered normal boost behavior? Also, is it correct that I recall that you can adjust the boost behavior (when it spools up) via the fuel pump or am I just making that up?
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Old September 7th, 2013, 05:58 PM
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I've turned down my stock IP fuel screw 1/8 of a turn. My boost maxes out at 1 bar on factory settings.
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