How Much Is To Much EGT?

***PUREVIL*** · 02-06-2009, 12:08 AM

Finally the roads dont have any snow or ice on them so I went out screwing around with my smarty/edge combo and I noticed when I was doing a few 1/4 mile runs that it EGTs went as high as 1300 and I think it stopped there. It got me wondering how much is OK and how much is not good. I have a stock turbo and manifold.

On a side note how reliable is the 1/4 test on the edge? Anyone know? With the Smarty on 6, and the edge on 0 I ran a 14.0 @ 102, and on level 5 I ran 13.5 @ 106. I believe I set the max egt to 1300 to be safe so it may have been backing down, im not 100% sure how this all works now. LOL Im a noob, I can admit that!

**SOUTHERN SMOKE** · 02-06-2009, 12:13 AM

is it your 2k5?? an 1300 is fine, the cr trucks run hotter than the second gens, just my edge i set it at 1250* but some guys with the earlier 05-06 models are seeing 1300* stock when they are towing trailers, you are perfectly fine, if you want it to run a little more you can set the back down at 1400* for the qaurter and you will be fine, remember its not just heat that messes things up, whats your boost numbers looking like? drive pressure will kill your headgasket, if you get to far out of your efficiency range, your drive press will skyrocket, you want it to be significantly lower than your boost pressure, but as far as temps go, you have nothing to worry about at 1300*, bump it up a hair more...

04dodgedsl · 02-06-2009, 01:09 AM

Quote:

Originally Posted by PUREVIL

Finally the roads dont have any snow or ice on them so I went out screwing around with my smarty/edge combo and I noticed when I was doing a few 1/4 mile runs that it EGTs went as high as 1300 and I think it stopped there. It got me wondering how much is OK and how much is not good. I have a stock turbo and manifold.

On a side note how reliable is the 1/4 test on the edge? Anyone know? With the Smarty on 6, and the edge on 0 I ran a 14.0 @ 102, and on level 5 I ran 13.5 @ 106. I believe I set the max egt to 1300 to be safe so it may have been backing down, im not 100% sure how this all works now. LOL Im a noob, I can admit that!

1300 is fine. You dont want to leave it there for 20 mins, but for a short quarter mile run 1300 is nothing. Mine will hit 1500 in the quarter, and have some friends that peg a 1600 degree gauge in the quarter. As for the edge quarter mile time, seems pretty fast to me. Do you have your tires calibrated?? I ran a 14.2 on stock tires, and everything in my sig except turbo/injectors.

***PUREVIL*** · 02-06-2009, 02:08 AM

ok I wasn't sure how high I could go and I searched and didn't find any threads on EGT temps. I'll pump it up to 1400. I believe the max boost is 39 or 40.

While Im asking... the stock turbos dont have a blow off valve right? When I let off the gas under heavy acceleration the sound im hearing is compressor surge right? Is that not good for my turbo?

**SOUTHERN SMOKE** · 02-06-2009, 02:09 AM

Quote:

Originally Posted by PUREVIL

ok I wasn't sure how high I could go and I searched and didn't find any threads on EGT temps. I'll pump it up to 1400. I believe the max boost is 39 or 40.

ok 35-38 is the max of your efficiency range, then your drive pressures start climbing, i wouldnt hold it anything above 40 lbs if it gets there, not saying it cant hold it, but just to be safe on the stocker...

rocket · 02-06-2009, 01:38 PM

Quote:

Originally Posted by PUREVIL

While Im asking... the stock turbos dont have a blow off valve right? When I let off the gas under heavy acceleration the sound im hearing is compressor surge right? Is that not good for my turbo?

No BOV's. Surging or barking? Surging is "normal" but barking is not good...

Quarter sounds about right...gears pretty much "canceled" out your wheel size, right?

***PUREVIL*** · 02-06-2009, 01:51 PM

Quote:

Originally Posted by rocket

No BOV's. Surging or barking? Surging is "normal" but barking is not good...

Quarter sounds about right...gears pretty much "canceled" out your wheel size, right?

Well how can I tell the difference between surging and barking? It sounds kind of like a bov when I left off the throttle.

I think the 4.56s may be to short for 37s... because now I run 2000 to 2100ish @ 75 mph. For 37s I think 4.10s are fine, but later on after I get some more parts, tranny, turbos, etc. Im going to lift it more and run 40s, then the 4.56s should be perfect.

ynots57 · 02-06-2009, 02:02 PM

if your getting on it and quickly let off the throttle thats barking you hear, your turbo has an electronic controlled waste gate, no blow off valve.

***PUREVIL*** · 02-06-2009, 02:06 PM

I thought the wastegate bleeds off excess boost so it doesn't go over 40 psi?

So that barking sound is bad right? When sometimes even under normal/mild acceleration and I left off to maintain highway speeds it makes the sound, its quiet but I can hear it. Sometimes when I let off completely its really loud. If I could figure out why my stupid camera cant be seen on my mac I'd get video for you guys.

***Dreadnaught*** · 02-06-2009, 02:09 PM

if your building high boost psi, then let off fast, its barking. the pwooosh you hear under normal driving is excess boost still in the system, thats normal.

rocket · 02-06-2009, 03:36 PM

Quote:

Originally Posted by PUREVIL

Well how can I tell the difference between surging and barking? It sounds kind of like a bov when I left off the throttle.

I think the 4.56s may be to short for 37s... because now I run 2000 to 2100ish @ 75 mph. For 37s I think 4.10s are fine, but later on after I get some more parts, tranny, turbos, etc. Im going to lift it more and run 40s, then the 4.56s should be perfect.

Okay...those numbers sound pretty good then since you're "geared" low.

There's a natural "whooshing" that your bound to get when the engine no longer fuels the turbo but barking is when it's so excessive the turbo is stopping/spinning backwards. Bark will be "whoosh whoosh whoosh"...hence "barking"...

Ignore the IGNORANT TITLE..this is turbo bark

'04 Cummins Blow Off Valve- Video

THEGreenGoat · 02-06-2009, 03:51 PM

.......

02-06-2009, 12:08 AM	#1 (permalink)
*PUREVIL* Diesel Head Join Date: Sep 2007 Location: Minot ND/Las Vegas Posts: 1,835 Thanks: 18 Thanked 49 Times in 39 Posts iTrader Score: 0 reviews PUREVIL's Truck Pics	How Much Is To Much EGT? Finally the roads dont have any snow or ice on them so I went out screwing around with my smarty/edge combo and I noticed when I was doing a few 1/4 mile runs that it EGTs went as high as 1300 and I think it stopped there. It got me wondering how much is OK and how much is not good. I have a stock turbo and manifold. On a side note how reliable is the 1/4 test on the edge? Anyone know? With the Smarty on 6, and the edge on 0 I ran a 14.0 @ 102, and on level 5 I ran 13.5 @ 106. I believe I set the max egt to 1300 to be safe so it may have been backing down, im not 100% sure how this all works now. LOL Im a noob, I can admit that! __________________ 2005 Ram 2500 5.9L QC SB Laramie. Lots of mods. 2007 Ram 2500 5.9L MC SB Laramie. Kelderman Air Ride, Mods Coming!

02-06-2009, 12:13 AM	#2 (permalink)
SOUTHERN SMOKE GA CUMMINS CREW PREZ & Captain of the USS FAILBOAT! Join Date: Dec 2007 Location: ROYSTON, GEORGIA Posts: 5,241 Thanks: 35 Thanked 222 Times in 162 Posts iTrader Score: 0 reviews SOUTHERN SMOKE's Truck Pics	is it your 2k5?? an 1300 is fine, the cr trucks run hotter than the second gens, just my edge i set it at 1250* but some guys with the earlier 05-06 models are seeing 1300* stock when they are towing trailers, you are perfectly fine, if you want it to run a little more you can set the back down at 1400* for the qaurter and you will be fine, remember its not just heat that messes things up, whats your boost numbers looking like? drive pressure will kill your headgasket, if you get to far out of your efficiency range, your drive press will skyrocket, you want it to be significantly lower than your boost pressure, but as far as temps go, you have nothing to worry about at 1300*, bump it up a hair more... __________________ 2003 QCSB 4X4 5.9 6spd, Smarty, Valair, K&N, ARP, Topgun, Autometer, 5" Stacks, Smoked Recons, KMC wheels, Cooper 35X12.50's, Blacked Out And Engineered By Southern Smoke, And Dark Side Diesel! CLICK -------> GEORGIA CUMMINS CREW

02-06-2009, 02:08 AM	#4 (permalink)
*PUREVIL* Diesel Head Join Date: Sep 2007 Location: Minot ND/Las Vegas Posts: 1,835 Thanks: 18 Thanked 49 Times in 39 Posts iTrader Score: 0 reviews PUREVIL's Truck Pics	ok I wasn't sure how high I could go and I searched and didn't find any threads on EGT temps. I'll pump it up to 1400. I believe the max boost is 39 or 40. While Im asking... the stock turbos dont have a blow off valve right? When I let off the gas under heavy acceleration the sound im hearing is compressor surge right? Is that not good for my turbo? __________________ 2005 Ram 2500 5.9L QC SB Laramie. Lots of mods. 2007 Ram 2500 5.9L MC SB Laramie. Kelderman Air Ride, Mods Coming!

02-06-2009, 02:02 PM	#8 (permalink)
ynots57 Diesel Head Join Date: Mar 2007 Location: Southern OR Posts: 2,902 Thanks: 19 Thanked 41 Times in 37 Posts iTrader Score: 0 reviews ynots57's Truck Pics	if your getting on it and quickly let off the throttle thats barking you hear, your turbo has an electronic controlled waste gate, no blow off valve. __________________ 2005 3/4 SRW 48RE QUAD L/B 4x4 AEM AERO

02-06-2009, 02:06 PM	#9 (permalink)
*PUREVIL* Diesel Head Join Date: Sep 2007 Location: Minot ND/Las Vegas Posts: 1,835 Thanks: 18 Thanked 49 Times in 39 Posts iTrader Score: 0 reviews PUREVIL's Truck Pics	I thought the wastegate bleeds off excess boost so it doesn't go over 40 psi? So that barking sound is bad right? When sometimes even under normal/mild acceleration and I left off to maintain highway speeds it makes the sound, its quiet but I can hear it. Sometimes when I let off completely its really loud. If I could figure out why my stupid camera cant be seen on my mac I'd get video for you guys. __________________ 2005 Ram 2500 5.9L QC SB Laramie. Lots of mods. 2007 Ram 2500 5.9L MC SB Laramie. Kelderman Air Ride, Mods Coming!

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02-06-2009, 02:09 PM	#10 (permalink)
*Dreadnaught* Poor Man Built Join Date: Oct 2008 Location: 11.4 miles from Milan Dragway Posts: 1,970 Thanks: 23 Thanked 62 Times in 51 Posts iTrader Score: 0 reviews Dreadnaught's Truck Pics	if your building high boost psi, then let off fast, its barking. the pwooosh you hear under normal driving is excess boost still in the system, thats normal. __________________ 2004.5 Dodge Ram 3500 4x4 4 door, Short bed, Auto, 315X70 R 17 Bridgestone Dueller AT Revo 2 with Carli starter kit, Recon Cab lights. Silencer MIA, S&B CAI, 5" Expandit TBE str8 pipe, DiPricol (EGT, Boost, Pyro, RP, FP), Edge J/A, Air Dog DF-165 Studs, 2nd gen exhaust swap, and ii 64/71/14 on the way.

02-06-2009, 03:51 PM	#12 (permalink)
THEGreenGoat Diesel Head Join Date: Apr 2008 Posts: 1,174 Thanks: 0 Thanked 1 Time in 1 Post iTrader Score: 0 reviews THEGreenGoat's Truck Pics	....... __________________

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