2001-2002 Cummins Turbo Diesel (ETC) - Engine Rating

2001-2002 HO Turbo Diesel (ETH) - Engine Rating

GENERAL  ENGINE DATA

• Production Began  Jan 1, 2000 (Dodge called this 2001 model year)
• Type                       4-cycle in-line 6-cylinder
• Aspiration              Turbocharged, charge air cooled
• Bore & Stroke       4.02 in x 4.72 in (102 in x 120 mm)
• Displacement         359 in3 (5.88 liter)
• Firing Order           1-5-3-6-2-4 
• Valve System: OHV, 24 valves, solid sliding tappet lifter/follower
• Oil Pan Capacity    2.5 US gal (9.46 liter)
• Engine warranty     5-year/100,000-mile
• Oil and oil filter change interval     7,500 miles
• Fuel filter replacement interval      15,000 miles

NOTE - The boost rating comes from the 2001 Ram service manual supplement for wastegate testing. The test measures a specific wastegate actuator rod movement at a given pressure. One TDR member sent an inquiry to Cummins and received this reply: "The boost spec for the HO is 23.5 psi AT THE TURBO, not the intake. As some pressure is lost through the CAC due to restriction, the 19 - 21 psi people are seeing is about right."   (posted to the TDR Forum)

What's new in the ETH engine:

• Electronic Controls: New ECM calibration and fueling algorithms.
• Fuel Pump: Increased fuel flow in the Bosch VP44 injection pump.
• Injectors: Designed to provide increased fuel flow.
  • Injector note posted to the TDRoundtable by tgbol:
    • ETH injectors (3946306) flow 600cc at 100bars for 30 seconds
    • ETC injectors (3944828) flow 640cc at the same test.
• Turbocharger: Revised wastegate setting for 26psi at the turbocharger outlet.
  • Manifold boost specification is 43.5 inches Hg / 21 psi
• Head: Valve seat inserts for added durability.
• Pistons: New pistons with higher 17:1 compression ratio.
• Flywheel: New flywheel with 330 mm diameter clutch (vs. std. 310 mm).
• ISB Design Improvements and Features - from 1998 Mastertech
• FWIW: Reports from owners indicate that ETC engines are more responsive than ETH engines are to the major fueling boxes.

Turbocharger

The HX35W has a plate like this on the front of the compressor housing: 

From Mark Chapple of TST:   "Our testing shows them (HX35 and HY35) to be (functionally) equivalent and interchangeable."
Italics are my clarification to put the statement into context - Dave.

Long term reliability of the HY35W is still unknown.
This Holset newsletter discusses the "improvements" designed into the HY35.

Engine Control Modules - part # and description

• 3935964rx  ecm, calb.uprate epa manl chr
• 3935965rx  ecm,calb.uprate carb manl chr
• 3935966rx  ecm calb.uprate epa manl chr
• 3935967rx  ecm,calb.uprate carb manl chr
• 3937129rx  ecm,calb.uprate epa manl chr
• 3937130rx  ecm,calb.uprate carb mnl chr
• 3943858rx  ecm encore cm550 (isb)

Injectors - part# and description

• 3943201rx  inj,isb bos b srs 6mi 7mt ef
• 3943205rx  inj,isb bos b srs 6mi 7mt ef
• 3943928rx  inj,isb bos b 6mi 7mt ef
• 3943929rx  inj,isb bos b 6mi 7mt ef
• 3944828rx  inj,isb (chrysler application)
• 3944829rx  inj,isb (chrysler application)

ECM description notes:

• ecm = electronic control module
• calib. uprate = power uprate
• epa = 49 state (federal) emissions
• carb= California emissions
• manl= manual transmission
• chr = Chrysler engine application

• inj = injectors
• isb = 5.9liter 24 Valve Cummins Engine
• isc = 8.3liters 24 Valve Cummins Engine
• bos = Bosch
• ef = electronic fueling
• 6mi = diameter of nozzle in millemeters
• 7mt = (unknown at this time)