Size of Engine

[Coached]

Originally Posted by Triker56

The Discovery never had a 550 ft lb ISB put in any of them.
They all had at least 275 HP & 660 lb ft and the newer(08-09-10) 6.7L ISB 750 lb ft at 350 HP. In 2011 the D went to a ISC 8.3L with 1050 lb ft engine.

All Discovery's made since 1997 have also had a Allison 6 speed in them.

I love my ISB with Banks Powerpack with turbo 33-34 PSI and the average of 10.283 MPG.
Bigger engines can pass me if they want going up hills. But I will pass them while they are taking on more diesel.

I can run the speed limit + of 55 MPH pulling a toad, going from bottom of I75 Mounteagle to the top with no problem, while never going over 2,100 RPM of the available 24-2500.

5.9L Cummins 24v ISB Specs

I said "three years ago" which makes it an '08 engine, and my specs. are close for that time period, certainly close enough for this discussion? There's a reason Fleetwood changed to the ISC 8.3 (1050 lbs) along with the attendant price increase and I think we've been chatting about it? It should not get lost in this type of discussion that, at the end of the day, if the Owner is happy with the performance as well as all the other considerations, then it shouldn't matter to us what engine was chosen. Mike, can you find us a picture of the radiator for that thing???

[Jack1234]

Originally Posted by Triker56

The Discovery never had a 550 ft lb ISB put in any of them.
They all had at least 275 HP & 660 lb ft and the newer(08-09-10) 6.7L ISB 750 lb ft at 350 HP. In 2011 the D went to a ISC 8.3L with 1050 lb ft engine.

All Discovery's made since 1997 have also had a Allison 6 speed in them.

I love my ISB with Banks Powerpack with turbo 33-34 PSI and the average of 10.283 MPG.
Bigger engines can pass me if they want going up hills. But I will pass them while they are taking on more diesel.

I can run the speed limit + of 55 MPH pulling a toad, going from bottom of I75 Mounteagle to the top with no problem, while never going over 2,100 RPM of the available 24-2500.

No offense, but the fact that you added a Banks Powerpack to your OEM C-ISB
appears to me to prove the point...... that the smaller diesel was inadequate for the size & weight of the Coach???

[Triker56]

Originally Posted by Coached

5.9L Cummins 24v ISB Specs
I said "three years ago" which makes it an '08 engine, and my specs. are close for that time period, certainly close enough for this discussion?

Only thing is we are discussing a 6.7L ISB in a MH. Your link is for the ISB is in a Pickup.
A Pickup has less torque because of the limited power the transmission can take in them.

The ISB torque in a MH with the 5 speed Allison(620 lb ft) does have less toque then the 660 to 750 lb ft 6.7L put in a Allison 6 speed.

The '08' Discovery had the 6.7L 350 HP engine in it.

I added the Banks kit to mine not because it wasn't adequate going anyplace.
I'm a old drag racer from the early 60's and was always adding more HP.

I only added it after owning the D 3 years and I had some extra $$$$ to play with.
The extra turbo boost from OEM 23-24 PSI to 33-34 PSI is not needed or used on most travel days. But nice to have.

The OEM ISB had no problem driving anywhere in CO. before the add on.

[Mike Canter]

I totally agree in the quest for power. Its a man thing. If Banks had a kit for a Detroit diesel then I would have it.