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 ...
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As a full-timer... my Holiday Rambler weights in at just under 25,000 pounds and I pull an '03 Tracker that weighs in around 3,500 pounds. My coach has the 6BT 5.9, that's the manual 12 valve version (with the Banks Turbo kit) instead of the ISB 24 valve engine... and I've driven it through all 48 states, Canada and down through Mexico to Guatemala a couple of times. While I won't be the first one up a long grade, I can keep up with the best of em on the down grade... so I consider it a wash, besides I'm retired and not in a hurry. The engine is very reliable, will cruise at 62 all day with power to spare and starts darn near instantly every time. I've never driven another DP so I don't know what if anything I'm missing with the smaller engine. Bottom line, I'm happy with it's performance and it's consistent 10 MPG.
