6.6/4.4 Caterpillar ACERT engines - Diesel Forum - TheDieselStop.com
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post #1 of 3 (permalink) Old 03-17-2007, 02:26 AM Thread Starter
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6.6/4.4 Caterpillar ACERT engines

Read the note about "personal vehicles"!!!


Notes for 6.6/4.4 Caterpillar ACERT engines.

This information is subject to change and must be verified with current appropriate service literature from Caterpillar.

- Power (120-250 HP 6.6), to weight (1116 lbs. for the 6.6) ratio.
- Power to size ratio, will fit into many applications.- Generation, industrial, trucks, buses, personal vehicles, 330 ex and smaller, D6 dozer and smaller, pavers, loaders etc…
- Improved fuel consumption
- The engines while initially based on the “Perkapillar” are in fact engineered in North America, U.K. (Perkins), and Japan (MHI).
- EPA certified
- 6.6 litre Caterpillar = Perkins Vista 1106D
- ECM needs to see 5000 PSI of fuel pressure and 250 RPM of cranking speed before it will allow the engine to start.
- 6.4 litre and 4.2 litre variations are in development.
- A person to person conversation can be held with engine running and no muffler installed within 10 feet of the engine. Cylinder block webbing, oil pan tray/isolator plate, and engineered harmonics cancel out excessive noise.
- Pistons are Teflon coated
- Cylinder walls are “plateau honed” meaning that after the first hone a second honing is performed to level off tips at the top of the cross hatch. This allows for better ring seal and less oil in grove of cross hatch to get burned/create emissions.
- 2007 engine will have 10 micron fuel filter.
- Engine will self prime and start with a completely empty fuel system within one minute of cranking.
- 6.6 fuel pump has two sections with three lobes per section. 4.4 has two sections with two lobes per section. Both are timed to reduce harmonics/pulsing in the high pressure fuel system.
- Injectors can be removed by loosening the intake rocker set screw and sliding the rocker over for access. There is no need to remove the rocker assembly or pull out the pushtube.
- Fuel system “optimize” Routine will run approx every 100 hours causing audible changes. This is a normal operation of the ECM and does not indicate a problem with the engine.
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post #2 of 3 (permalink) Old 03-19-2007, 11:58 AM
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Re: 6.6/4.4 Caterpillar ACERT engines

Read the note about "personal vehicles"!!!

[/ QUOTE ]

Right on. I would love to see a 4.4L in a personal vehicle. They are pretty cool 'little' engines that would work great in a 1/2 ton truck, but they do weigh quite a bit. I have worked with them first hand and seen some of the numbers they can produce. Pretty impressive.


2001 'X' 7.3l PSD 4x4 Limited
Oxford White / Medium Parchment
K&N Air filter, Husky Floor Liners
20' H&H Speedloader MX Tiltbed Trailer
Bilstein shocks(BE5-6208 front, BE56209 rear) $259.80 to my door.
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post #3 of 3 (permalink) Old 03-22-2007, 03:56 AM
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Re: 6.6/4.4 Caterpillar ACERT engines

i will take two of each please. I think that 4.4L would be an awesome little motor in a slightly up graded ranger.

00'F350 psd CC Drw 2wd Bright Amber Western Hauler, exhaust brake transfer flow 50 gal tank tool, 30K Cody goose neck hitch, hawk pads, cryo'ed rotors, stainless lines, 380,000 miles
02' Psd Excursion Limited ultimate Estate Green 7.3L Auto 2x4 hellwig swaybars and rancho 9000's. 381,000 miles.
1993 F-superduty (F-450) 7.3L Gutless non turbo 2x4 Auto, Tire eating S.O.B. 12,750lbs 80,000miles lincoln Vantage 500 Duetz bolted in the back.
1994 7.3 I.D.I.T. factory turbo, auto 2x4 DRW with lots of upgrades, 11 transmissions under 100K factory warranty. 280,000 miles Currently Cavitated and parked.
96 F-800 24'flat 5.9L cummins, 4spd allison juice brakes.
89 F-800 6.6L 5+2 27,00lbs light weight with National 556A crane behind the cab.
2006 T800 KW 550 C-15 18spd 22K front, 52K rears murray ramps, 195" W.B. CA spec heavy haul SOLD
2006 Murray 16 tire professional lowbed SOLD
1996 fetherlite 4 horse GN, Walton 18' 14K tag tilt equipment trailer.
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