Need to Lower EGT's

[Blue Thunder]

With my upgrades, I am running pretty hot. When empty, I can control temps. easily. But when towing my new 33' TT it is too easy to get temps. too high.



What would you suggest I do to lower temps. while towing?



Some say 'propane', others say, 'turbo'.



B. T. W. How hot is too hot? I can bury the gauge at 1600 deg no problem, but I was told that I could tow all day long at 1200.

 

[Diesel Freak]

Get in touch with Piers and tell him what you have for a Torque Convertor.



www.piersdiesel.com

 

[LSMITH]

It is turbo time. Propane is not the answer IMO. Call Piers and see what turbo he thinks you need.



I would tow all day a little warmer than 1200, but that is me.

 

[Greg Boardman-RIP]

Part of the problem is the stage III injectors. I run DDII's all day towing very heavy and have no problem. With the 3's in it runs too hot. That is with the HX40 from Piers. I realy like the setup I have now. 26,000 lbs and no heat issues.

 

[Diesel Freak]

Propane... JUST SAY NO!

 

[RustyJC]

Greg,



Did you ever try the DD2's with the stock HX35-W/12? I'm considering the DD2's with the thought of keeping my EGT's at 1300 degF or lower when towing - I'm currently running 1100 degF with the truck as equipped (see signature) at 21,180 GCW (21,500 GCWR).



Yep, I know that I'll have to give Peter @ South Bend a call before the injectors go in!



Edit: Oops - just read your signature. I guess you started out with the HY35-W/9, right?



Rusty

 

[Greg Boardman-RIP]

RustyJC,

I did run the DDII's with the stock turbo. It was the HY 35 and it was fine with just the Van Aaken box and 2's. It would get a little hot but you don't need as much throttle pressure to pull the big hills. I am a firm believer that you need a complete upgrade package that includes eveything from exhaust to intake. With what you are going to pull it might end up with a new turbo too.



Greg

 

[RustyJC]

Originally posted by Greg Boardman

I am a firm believer that you need a complete upgrade package that includes eveything from exhaust to intake.

See my signature. I've pretty well addressed that with the Jardine 4" exhaust and the BHAF. By the way, there won't be any firewall-cutting intake systems - my wife and others have to ride in the truck while we're towing.

With what you are going to pull it might end up with a new turbo too.

It may, indeed ... . that's what I'm trying to determine before I make the plunge for the DD2's and the clutch.



Rusty

 

[Koa Man]

A HX40/16 will make a significant difference in EGTs. I did for me. I previously ran a PDR HX35/14... great turbo but did not lower the EGTs enough for my application in towing heavy on hills. I can still run hot and am thinking of changing to a milder injector.

 

[Greg Boardman-RIP]

Rusty,



What I mean is BHAF or AFE megacannon, HX 40, Injectors, Edge Box, 4" exhaust... ... ... ... . I do think the factory setup is ok for light to moderate work. If you start to bomb you will spiral downhill (EGT rise) until you complete the process. That is what I meant. I for one do not like the hole in the dash idea either. This thing screams already with the HX and the AFE... ...

 

[RustyJC]

Well, the Jacobs e-brake pretty much locks me into a 35-size turbo. That's why I'm trying to figure out if the BHAF and 4" exhaust working with the stock HX35-W/12 turbo and the EZ (with boost elbow) can keep the EGTs at 1300 degF or below if I go to DD2's. Right now, I'm running 1100 degF max when towing, so I've got room to add some fueling even with the stock turbo - I'm just not sure how much.



Rusty

 

[Greg Boardman-RIP]

I cant say for sure if you will be ok. I remeber that if I pushed real hard I could hit 1250* to 1300* while towing. That is still in a range that you could back out of it and bring temps way down.

With the 4"and BHAF you will have alot more air. You can also find a used 14 housing for that stock turbo. JMHO. Hop this helps. If you want a mount for the BHAF, I have a used one I can send you for the shipping. Stainless Steel Mallory Mount.



Greg

 

[AggieJustin]

Rusty, hopefully by next week and can give you some reports on how the EZ/DD2 combo runs in an ETH. I'm getting a set of DD2s and will be putting them in on Sunday at the BOMB session in Houston.



I'm looking for the same as you, how far I could push the BOMBs without needing a turbo upgrade (at least not right now).



JM

 

[DHatfield]

I have the EZ/DD2's combo on my ETH and temps are usually not a problem at all unless towing over the mountains then I have to back out a little. I do that 14cm exaust housing though which that may help a little better than stock.