โJun-25-2020 11:36 AM
โSep-29-2020 04:16 PM
โSep-21-2020 08:03 PM
Lantley wrote:larry barnhart wrote:
We had a 2001 8.1 gas engine and 3500 2wd dually. We have a 2005 3500 2wd duramax and have driven on I-84 many time with both trucks. Going down the cabbage hill for 6 miles in Oregon there was no difference in being under control towing the same fifth. chevman
Does your 2005 Duramax have an aftermarket exhaust brake.
Exhaust brakes are now standard equipment and make a big difference
โSep-16-2020 03:02 PM
JRscooby wrote:
What I have never seen is to like sized engines, same load, same gears, same grade, compare the whoa.
โSep-16-2020 12:59 PM
Dtank wrote:JRscooby wrote:
I would still like to see a side by side comparison of engine braking, same displacement gas/diesel exhaust brake. I know the diesel without the add-on has almost nothing, so it would be the difference restricting the air in compare to restricting air out.
Gas = downshift. You will still need to use brakes on and off to maintain speed.
Diesel = You need to take a test drive! "Back when" with my 1985 Ferd diesel - there was no compression braking. A downshift to a lower gear was necessary.
Exhaust brakes were optional on RAM trucks with manual transmissions in 2005. With automatic trans in 2006. After that, like the poster says - standard equipment.
No need to use the (hydraulic) brakes on a downhill - except for a complete stop.
BTW - HDTs (Heavy Duty Trucks) have had "Jake Brakes" for years - including 3 stage. Yes - a Jake Brake (HDT) and an EB (LDT) -some mfg by "Jacobs"- are two different animals that achieve the same excellent results.
~
โSep-16-2020 09:45 AM
JRscooby wrote:Njmurvin wrote:
Yeah. I have a PacBrake on my 2004.5 Ram (there was no OEM option for an exhaust brake). With trailer in tow, I just descended a 7 degree grade at 60mph without touching the brakes once. I won't tow again with a diesel without an exhaust brake.
I don't even know if you can buy a new diesel from the big 3 that doesn't have an EB.
I would still like to see a side by side comparison of engine braking, same displacement gas/diesel exhaust brake. I know the diesel without the add-on has almost nothing, so it would be the difference restricting the air in compare to restricting air out.
โSep-10-2020 01:01 AM
โAug-10-2020 04:16 PM
C Schomer wrote:
OP... You have a darn good truck. All you need is a few mods. My 03 HO 6spd 4.10 s, with towing mods, handled my 15k fiver very easily and 20k was still very doable. It was a LOT better workhorse then my 12. You'll be taking a big step backwards if you get rid of it. Craig
โAug-06-2020 04:17 AM
larry barnhart wrote:
We had a 2001 8.1 gas engine and 3500 2wd dually. We have a 2005 3500 2wd duramax and have driven on I-84 many time with both trucks. Going down the cabbage hill for 6 miles in Oregon there was no difference in being under control towing the same fifth. chevman
โAug-06-2020 03:29 AM
Njmurvin wrote:
Yeah. I have a PacBrake on my 2004.5 Ram (there was no OEM option for an exhaust brake). With trailer in tow, I just descended a 7 degree grade at 60mph without touching the brakes once. I won't tow again with a diesel without an exhaust brake.
I don't even know if you can buy a new diesel from the big 3 that doesn't have an EB.
โAug-05-2020 08:24 PM
โAug-05-2020 07:15 AM
โJun-26-2020 11:15 AM
โJun-26-2020 07:25 AM
theoldwizard1 wrote:Njmurvin wrote:
In the TFL towing tests, the 7.3 got 2.2mpg going up the Ike. The diesels didn't do much better (all were towing 16K lbs). But they used the computer calculated mileage so take those numbers with a grain of salt. The big advantage to the diesels was in the downhill run. Far less touches of the brakes in the diesel trucks.
Interesting. Diesel are not know for good engine braking !
โJun-25-2020 08:15 PM