EGT'S while pulling

[Randy]

I searched the archives and found little. I just got a 26' 5er. While pulling moderate grades I noticed my EGT climbed to 1250. My thermocupler is pre-turbo. I have the VA and a 4" exhaust. No other mods except amsoil throughout including their air filter (similar to the K&N). I thought the VA was supposed to keep EGT's lower because of the advanced injection timing. What do I do? And what is the max temp I should allow before I back out of it? It is a pain because I have the power to go faster, but am limited by the EGT's. Thanks for any help. Randy

 

[Mille4212]

Good luck on finding any information. I have the 2001 3/4 H. O. with the ez box and 4" exaust. I haul a 24' 5th wheel weighing in empty at 4200 lbs and a 18' sea ray boat weighing in at 3500lbs. Just got back from Greenmountian Res. I hit the tunnel both ways at 70mph with 1000 egt post turbo with 6lbs of fuel preasure and only about 26lbs of boost . I'm real happy with the truck but was wondering if the egt's are too high and how can I get more boost? Thanks guys for getting me hooked.

 

[Mr. Brewski]

I never saw more than 950 post turbo coming home from CA via Siskyou pass. I was somewhere in the neiborhood of 14,500 gross and doing the speed limit. Outside air temp was pushing 100 degrees in the middle of August. Boost was rock solid at 20psi when climbing.

 

[Big White Beast]

Boost elbow.....

950° post turbop seems a little high. I thought you added 300° to your post turbo reading to get the same as pre. From What I have read here 1300° pre is the max you want to have. Something about aluminum melting at 1325°.



Have you modified your waste gate to get more boost? (Several threads on how to do this, dependent on what type of turbo) That was a tremendous help with mine. No more power but lowered the EGT's. I also noticed slight lowering of temps with the Mopar Guy Air Filter. The 4" exhaust was the big one for me. Can hardly break 1000° pre turbo now.



Randy I saw you have a Pac Brake. Any chance this is restricting your exhaust?



Just my 2¢ worth,



Garrett

 

[Sixspeed]

Randy, you might try a boost module and elbow. I have the same setup as you do with the boost fooler and at 19,000 GCVW 1200 degs. is as high as I get. I also hit 32 lbs. of boost with this setup. Just my . 02 cents worth.

 

[Mr. Brewski]

sorry - typoed - 850 post turbo. (Big fingers)

 

[RustyJC]

Well, based on the reports I had seen, I was ready for the "ETH EGT meltdown" when we took our 13,500 lb GVWR 5ver out for the first time this weekend since adding gauges! Although it was only 85*-90* F and the terrain was pretty flat, I purposely accelerated from around 1800 RPM in 6th (5 PSI boost when I started) to see what I could drive the EGT's to on a quick overfuel. The most I saw was a momentary 1150* F until the boost caught up (around 22 PSI), then EGT dropped immediately to 1000* to 1050* while accelerating. Even at WOT going up through the gears, I never could pull VP44 inlet pressure below 12 PSIG.



For a box-stock truck with only 800 miles, the 2002 did pretty darned well. I'll guarantee you that my old V-10 automatic 3500 would blow it into the weeds on acceleration up to speed, but the ETH seems to be able to hold speed on grades better than the V-10. We'll see how much difference the Edge EZ makes later this month.



Rusty



P. S. - The inlet "flapping" noise under heavy load above 2000 RPM is still there on the 2002's!

 

[Todd T]

what was your gross and how much boost did you pull oin those grades.



keep in mind your truck now has more power but that doesnt mean its always usable.



the most I have hauled is just under 12,000 GCVW and that was in 95degree weather, up some pretty steep grades. my max boost was 30PSI @ 1050 pre turbo. I have my version of Psychotty air on the truck and it took 200 degrees off my EGT temps. if that helps any

 

[One Old Dog]

egt's

Randy

I had the same thing happen to me I have a va and boost module and elbow and my egt would be 1200 -1300 pulllng up hill. I went to the napa and bought a 2790 air filter and the egt never and i mean neve get over 950. I put a thin pice of foam around it to help keep out the dirt,but the thing works great. It is the Big Air filter that a lot of us have went to.

 

[Randy]

Thanks for the help. I don't think my pack brake is the problem. My gross was about 16,000 lbs and my boost was 20 lbs. Where do I get the elbow and boost module and how hard is it to install,-- price? I am concerned about my warrenty so I don't want any evidence that its been modified. Is the boost module and elbow stealthy?



Bige White Beast: How did you modify your waste gate. My turbo is stock for the 98. 5 (Holset)

 

[Sean Flanagan]

With everything on (see signature) I can bury the EGT (pre turbo) past 1400 if I am not careful. That's pulling my "small" 4000lb Travel Trailer up Eastbound I-70 over Vail pass and Eisenhauer going 75mph in 5th gear. I definetely have to drive by the pyro but I'm in the left lane sayin' "get outta my way"

 

[Big White Beast]

I have the HY35 Turbo.....

From what I've read here only half of the 01's with autos had this turbo. I had to delay mine with a spring and turnbuckle.



Most others are controlled by the elbow that comes with your boost module or fueling box. Not familiar with the Van Aken - Does it have a built in boost module? If not you will require one so codes don't get set in your truck.



On another note I just read some info relating to boost on Fritz's Ram page. One thing I found interesting was that if your boost is too much it can create higher EGT's by creating a lean condition. Their suggestion was to adjust it until your EGT's are at their lowest. Not necessarily the max boost. Anyone else care to chime in on this??



And go ahead and try the Mopar Guy Air Filter too, if anything it looks great sitting in the engine compartment, and makes a great conversation piece



Garrett

 

[RAMalama]

Nope, diesels are opposite of gassers. A fuel lean condition will cool the engine. Thats why increased boost is a MUST with added fuel. Think of our diesels like an oven. If you add fuel, you add heat. When you increase fuel AND air you get POWER!!!!!!

 

[Big White Beast]

Too much air......

RAMalama,



I think the point they were making is that as you increase fuel you up the boost proportionaly. At a certain point, depending on fueling boxes, you are putting in more air than the fuel needs.



I have the EZ in mine and the instuctions from Edge say it is not even necessary to modify the waste gate for power purposes. I delayed mine to bring down the EGT's. It did help to a certain point.



I used a turnbuckle with a spring and have been adjusting it to see if I can get my EGT's lower some more. Lenghty process though. Gets too hot to adjust and make another run



I guess I'm up to 6¢ in this thread



Garrett

 

[roadranger]

It's the Altitude, Randy

Randy,



I've got a slide in camper and tow a 6x12 cargo trailer. CTD set up with EZ box on #2, EZ boost elbow, Amsoil air filter, and stock 3" exhaust.



Up here in the mountains I can easily hit 1250* pre turbo, at 25 psi boost, but can get it under control by downshifting the 6 speed. It'll smoke pretty good on takeoffs too- way too much for my taste on #3 setting.



On two trips to Calif. since June, I've noticed the EGT's are 200* to 300* lower down around sea level, with hardly any smoke at all on takeoff (#2 setting). Seems like there is more air down there!





Things get better up here in the mountains when the weather cools off, too.



just my $. 02

 

[CumminsAholic]

Randy you can get a boost module and elbow from practical solutions. http://www.psdieselproducts.bizland.com/ They're probably the cheapest and offer high quality. If you're not getting over 19 pounds of boost then these 2 items will definately help.

Corey

 

[Randy]

Thanks for the help. I think I am going to try a boost module and elbow to lower the EGT's I read that Practical Solutions had one for $149. I hope it's not to hard to install. I have put in and taken out injectors before, so I guess I can handle the Boost module and elbow. Will the extra boost add any power or just lower the EGT's? Thanks again for the help, boy I love this TDR forum.

 

[HDH]

Originally posted by Randy

I searched the archives and found little. I just got a 26' 5er. While pulling moderate grades I noticed my EGT climbed to 1250. My thermocupler is pre-turbo. I have the VA and a 4" exhaust. No other mods except amsoil throughout including their air filter (similar to the K&N). I thought the VA was supposed to keep EGT's lower because of the advanced injection timing. What do I do? And what is the max temp I should allow before I back out of it? It is a pain because I have the power to go faster, but am limited by the EGT's. Thanks for any help. Randy

Randy,

I think Its your Altitude you were at when you were pulling, More than anything.

I have pulled my 3. 5k jeep Cherokee to Moab from Bakersfield, All was fine till i Got Near Richfield Utah, Where on some of the Hills I could easily go to 1300F Pre turbo at 65mph In October! at 45f outside temp!



Now Flash Foward to June 2001, Pulling 8000 Lbs Up Hwy 108 to Pinecrest lake Ca, Grade is somewhere around 4. 5 to 7. 0% its 101f outside I have the AirConditioner on full blast doing 55mph OD off, I could get the EGT Near 1200F. It stayed around 950f Preturbo!,



So Whats the Difference?. I was at 7000ft in utah, And Only 3500ft on hwy 108 in ca.



Doug.