ETH / DEE ?

[MojaveJoe]

I must be ETH/DEE challenged



OK... I admit it Iam new to this forum, and I have learned at lot of the acronyms that you experts use here, but I have yet to figure out why half of you put ETH/DEE in your signature line.



So enlighten me please. Please define ETH/DEE for me



And thanks to all of you for providing me with so much practical and theoretical info for buying and owning a CTD.



Joe

 

[kkirkpatrick]

This means that it is a 6 speed transmission and has the high output engine.

 

[MojaveJoe]

Thanks kk,



But that makes no sense at all *LOL* ... . No "6" or "HO" in the acronym that I can see.



And here I thought I was just dense



There must be some connection between the letters "ETH/DEE"... . and the words they derive from.

I wonder what they might be?

 

[kkirkpatrick]

I might be wrong, but I think ETH is the order code for the HO cummins and DEE the order code on the 6-speed HD manuel transmission.

 

[MCummings]

I have an ETC/DEE



Standard Output 24V Cummins = ETC Order code

High Output 24V Cummins = ETH Order Code

6-Speed NV5600 = DEE Order Code



Hope this helps.



BTW The HO and SO are different in more ways thanm just power ratings (injectors, pistons, etc)



Merrick Cummings Jr

 

[Badunit]

This post might help you on other acronyms you will encounter here:



https://www.turbodieselregister.com/forums/showthread.php?s=&threadid=49796

 

[Parshal]

Originally posted by MCummings



BTW The HO and SO are different in more ways thanm just power ratings (injectors, pistons, etc)



Merrick Cummings Jr

What exactly are the differences?

 

[MCummings]

Originally posted by Parshal

What exactly are the differences?

Can't help ya with Exactly,, but here is what my memory tells me.



2002 and down (Not '03's and up) The Pistons were shaped differently, If I recall, for higher compression. The injectors were set to "Pop Off" at a Higher pressure. The plungers in the VP-44 were smaller for higher pressure.



The ETH doesn't respond with High HP gains to the Power Edge COMP, as well as the ETC does (Computer differences, and smaller injectors)



The ETH's also ran hot in stock form (EGT). The ETC is known to be a "Cool" running motor in stock trim.

Members have reported here that they have had there Factory Stock ETH up to 1400*F (EGT) on hard pulls, whereas ETC's don't usually run about ~1100*F (EGT) on hard pulls.



The ETH also would blow headgaskets with alot of propane. The ETC was more immune,, but as with any drug,, enough of it will break something.



ETH/DEE also had 13" Flywheels and clutches. Not necassarily stronger from factory, but more surface area can translate into more holding power.



I can't recall any other differences,, although I'm sure there are more.



Hope This Helps,

Merrick Cummings Jr



Edited to clarify model years.

 

[tarussell]

There are also inserts in the head for the valves for better durabilty.

 

[MojaveJoe]

Thank you all for your input.



It blows my mind how much I have yet to learn about CTDs.



Regards,

and Keep On Truckin.

,

Joe

 

[d.miner]

HO differences

I got this info from the Cummins website on the differences between the ETC and the HO

http://www.cummins.com/na/pages/en/....cfm?uuid=00038B45-046B-1B90-BCF080C4A8F00000

 

[Casey Balvert]

That information is for engines built prior to 2003 MY. I don't think it applies to the new design. Cheers,



Casey

 

[MojaveJoe]

ETC & ETH same engine... more fuel

CBalvert... . I believe you are right about the 2003's using the same engine for the SO and HO version.



Just yesterday I read somewhere that the differences are basically more fuel and maybe different electrics. Can't seem to go back and find my source for this info, but Im fairly sure it was from someone who should know. Either CD or a performance parts mfr, thats why it stuck in my memory (what's left of it anyway . )



Maybe another TDR member has the official info or a link to it?

 

[MojaveJoe]

Go figure... the info I remembered is from another thread I started.

(I guess the gray matter isn't all gone yet )



See ... . "ETH vs ETC... EGRs" (3rd Gen... forum)



KLockliear of Deisel Dynamics, Las Vegas, is the source of the '03

"identical mechanical" comparison for the HO and SO engines.



If anyone knows... it's likely Keith



FYI, Joe

 

[kaffine krazed]

There are diffrences between the HO and SO on the new 03 engine as well. The HO uses a diffrent oiling jet to cool the piston and the pistons are diffrent to take adavantage of the new oil jets.