Cummings ISB 5.9L Turbo Diesel 300hp
I'm new to the diesel engines so how many different Cummins engines do they normally use for RV's? Someone was telling me that the ISB 5.9 is small for a diesel pusher?? So please done rip on me if ...
Forum Discussion
Dog Trainer wrote:
Look at the weight and length and if you are in the 100 hp per 1000 lb category the 5.9 will be adequate. We have put many thousands of miles on our B5.9 12 Valve and as others have stated she is not a speed demon up the hills. On the flat she really likes to run and I can get an honest 11 MPG with my Allison 6 speed but then again I am just at 22,000 lbs.
We've heard that 1HP/1000 pounds is a decent rule of thumb that manufacturers use to mate engines to their DPs. Ours weighs 28,000 pounds, has the 300HP engine, gets between 9-9.5 going 62-65.
