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Old 09-19-2015, 02:22 PM   #1
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260 HP on Diesel

Is this enough power to drive alot up mountain passes? Ive been told it has fuel injection and should be no problem? Its a 2000 Newmar Koubtey Star.
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Old 09-19-2015, 02:31 PM   #2
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Weight/length of coach? Likely it will get you across the top, but may or may not do it as fast as you want. Are you towing anything? Weight there is important also
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Old 09-19-2015, 03:13 PM   #3
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Diesels are all fuel injected, and horse power is horsepower. One key difference may be, however, whether the engine has a turbocharger or not. Diesels need a lot of air as well as fuel, and a turbocharger helps deliver that air when altitude thins it out.

Otherwise, it's strictly a matter of weight vs horsepower. 260 hp probably does an adequate job on the grades with a 25,000-26,000 lb coach (including toad). Not so great if 30,000.
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Old 09-19-2015, 03:47 PM   #4
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Previous MH, 36' DP with Cummins 260 ISB engine. (550ft lb Torque) GVWR 22,000 GCWR 26k could maintain 45mph or better on 7-8% grade even towing. Now if you stopped on the grade you certainly were not going to set any records getting back up to speed, but the trucks around you will not either.

Really never felt under powered, The 260 is turbocharged, consistently averaged 11 mpg and overall was very reliable. Cummins eventually rated that same engine at 325HP and 610# torque.
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Old 09-20-2015, 08:48 AM   #5
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Our first DP was 36' and had a 230 hp ISB engine. We towed a Saturn wagon. I don't recall any problems getting over the SW mountains, but we had plenty of time to view the scenery.
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Old 09-20-2015, 09:09 AM   #6
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If it comes to a stop trying to get to the top. Call your ERS for a tow.

It has more toque then any gasser MH going up the same hill.
Only difference is you won't have all the screaming engine noise.

Use your manual downshift to keep RPM's up around 2100-2300 to help keep engine run cooler. And to stop gear hunting.
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Old 09-20-2015, 09:16 AM   #7
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All engines will get you to the top. May not be as fast as you would like but if you are not in a hurry and like to look around at the scenery you will be good.

IMO we are too much in a rush now days. Everyone wants to leave 10 minutes late and arrive 10 minutes early on a 10 minute drive.

We should be enjoying all of our journey including the travel.
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Old 09-20-2015, 11:27 AM   #8
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IMO we are too much in a rush now days. Everyone wants to leave 10 minutes late and arrive 10 minutes early on a 10 minute drive.
x2!
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Old 09-20-2015, 06:55 PM   #9
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In a different life I used to drive all over Colorado with a 262 HP or 275 HP Cummins, grossing from 50,000 to 80,000 lbs. True, it wasn't fast but got where I was supposed to go. Gear ratios were selected to provide a top speed between 70 and 75 mph so they may have been higher than most RVs. I also had around 12 forward gears in a manual transmission. The 262 was turbocharged and the 275 had a roots blower. Without the turbo or the blower it would have been difficult in the mountains. Would I have liked more power? Sure, as much as I could get.
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Old 09-21-2015, 10:18 PM   #10
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Thanks all.
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Old 09-21-2015, 10:31 PM   #11
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Quote:
Originally Posted by Hooligan View Post
Really never felt under powered, The 260 is turbocharged, consistently averaged 11 mpg and overall was very reliable. Cummins eventually rated that same engine at 325HP and 610# torque.
I'm betting it wasn't the "same engine"! May be displacement wise but not the "same" engine as the 260!
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Old 10-04-2015, 11:34 PM   #12
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Mr_D- went by this article, don't know what changes went with the increases.
5.9L Cummins 24v Specs

Cummins ISB Engine Ratings
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Old 10-05-2015, 02:08 PM   #13
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Well, for starters the 325 hp version had 24 valves instead of 12 plus a different injection system (HPCR). Just to name a couple things.
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Old 10-05-2015, 03:00 PM   #14
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Quote:
Originally Posted by GN2ZDGS View Post
Thanks all.
What?!?! Not going to tell us what the weight is???
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