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Old 11-21-2015, 03:07 PM   #15
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I think the Detroit Diesel 6V92 and 8V92 series make the best music, or were you asking about other criteria?

unless you can get a buzzin dozen with straights on it😆😆
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Old 11-21-2015, 03:17 PM   #16
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if it doesn't have a cat, or detroit i won't even look. no macks, volvo's, or cummins. don't need anything to spend money or work on.
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Old 11-21-2015, 03:48 PM   #17
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This is my first Detroit 4 cycle in my life series 60.500 HP . Its better on fuel than Cummins or Cat and maybe easier to work on Power per pound its at the top of the list.......however , I was always a Cummins kinda Guy , then Volvo. My first choice if I had a choice would be Volvo, great engine and best fuel mil;age....However again , most Volvos were and are used trucks and thats where I came from, many millions of miles, no problems. Had one Cat , never again ! expensive parts and subject to more maintenance and gasket failures.Had one Mack , great e3ngine parts were expensive and under powered ( that was a long time ago ) Bottom live , for the averago, on the average and has the most service stations, including truck stops is Cummins. They take the lead in Motor coaches by far, so , when you are looking , most likly a Cummins will be in what you like,, a very good choice, any model , except the old 903 V8 and a few other less than perfect experiments, and its less likely you will ever see one anyway. In the era you are looking and if you want a big coach 43-45 ft. , you will find a lot of Detroits, Newell , Bluebird , Country Coach, Foretravel not so much. The 97-2000 Foretravel double slide is huge as they pioneered the double slide ( Opposing ), but , a lot came with a Cat......then again as others, I would go more with if its the right Coach for you....buy it regardless of power.
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Old 11-21-2015, 04:39 PM   #18
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The Cummins ISM (M11) is hard to beat. Plenty of HP and torque, especially in a 36 ft motorhome. Couple that with the Allison HD4060 transmission with retarder and you don't have to worry about towing or hills. Nothing like horsepower! Like most other engines take care of them and they will out last you.


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2000 Foretravel U320 4010
Cummins ISM 450hp
Allison HD4060R 6 Spd W/Retarder
As a side note, would love to see pics of your U320. Something about the Foretravels that I really like. Curious if anyone has ever seen a link where all the Cummins motor home engines are shown with various power/torgue numbers and other features.

A fellow Rv'r has a great looking 2001 American Eagle and swears by his ISL Cummins, but have no idea what the ISL means.
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Old 11-21-2015, 05:31 PM   #19
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Originally Posted by Wbonsell View Post
As a side note, would love to see pics of your U320. Something about the Foretravels that I really like. Curious if anyone has ever seen a link where all the Cummins motor home engines are shown with various power/torgue numbers and other features.

A fellow Rv'r has a great looking 2001 American Eagle and swears by his ISL Cummins, but have no idea what the ISL means.
It's just Cummins nomenclature for a particular engine series. I think the number stays with the series regardless of the current engine architecture. The ISB used to be a 5.9L and now its the current 6.7L.
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Old 11-21-2015, 05:53 PM   #20
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There are a few, number one is cooling capacity. HP and torque generate heat that has to be dissipated and a side radiator is more efficient than a rear radiator. I've heard that 350 hp is about the limit for a rear radiator coach and that's pretty much been my experience. I haven't seen a 400 hp rear radiator motor home and I've seen 315 hp and up with a side radiator.

The second reason is ease of maintenance. I'll do most of the work myself and I think I can do most anything that doesn't involve rebuilding the engine. A side radiator makes getting to the engine a lot easier. It's also cheaper if you have someone else do it because you don't have to remove the radiator for everything.

The third reason is maintaining cooling efficiency. A side radiator isn't as prone to picking up dirt an debris which blocks the fins. It's also easier to clean.

A side radiator does add complexity and another source of potential failure, but for me the benefits outweigh the disadvantages.

YMMV.
Some yrs ago that may have been the case. But FL is offering 450 HP rear rad chassis now. HP has nothing to do with rad location. But $$ does.
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Old 11-21-2015, 08:33 PM   #21
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Originally Posted by Wbonsell View Post
As a side note, would love to see pics of your U320. Something about the Foretravels that I really like. Curious if anyone has ever seen a link where all the Cummins motor home engines are shown with various power/torgue numbers and other features.

A fellow Rv'r has a great looking 2001 American Eagle and swears by his ISL Cummins, but have no idea what the ISL means.

Here you go:

http://cumminsengines.com/showcase.a...Categories=100



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Old 11-21-2015, 09:24 PM   #22
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Consensus on best diesel engine?

WBONSELL, Here is a couple...
Click image for larger version

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Bruce & Teresa
2000 Foretravel U320 4010
Cummins ISM 450hp
Allison HD4060R 6 Spd W/Retarder
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Old 11-21-2015, 09:35 PM   #23
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One of my fellow rescue divers is a supervisor at Cummins R&D. His job is to try to make them fail. He says the ISM (M11) is the best engine they ever built.
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Old 11-22-2015, 09:16 AM   #24
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One of my fellow rescue divers is a supervisor at Cummins R&D. His job is to try to make them fail. He says the ISM (M11) is the best engine they ever built.
That Cummins motor is a take off on the old L10 , a vocational engine, was not so successful over the road. Granted things have changed and improved. I had one 2 years ago in a Monaco Sig. 40 ft. I did like it, but did seem a little short on torque and I had the 450 hp version. I am sure in a coach it would last forever, not so much OTR commercial.
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Old 11-22-2015, 09:20 AM   #25
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Originally Posted by ecurb74 View Post
WBONSELL, Here is a couple...
Attachment 112510
Attachment 112511


Bruce & Teresa
2000 Foretravel U320 4010
Cummins ISM 450hp
Allison HD4060R 6 Spd W/Retarder
Bruce, very nice coach. I love that long couch...very impressive. Do you cart around a football team or do you just like to stretch out?
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Old 11-22-2015, 09:21 AM   #26
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Here you go:

Engine Finder - Cummins Engines



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Thank you Steve!
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Old 11-22-2015, 09:26 AM   #27
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Originally Posted by ecurb74 View Post
WBONSELL, Here is a couple...
Attachment 112510
Attachment 112511


Bruce & Teresa
2000 Foretravel U320 4010
Cummins ISM 450hp
Allison HD4060R 6 Spd W/Retarder
Absolutely gorgeous Bruce! My kind of motor home.
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Old 11-22-2015, 10:17 AM   #28
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Check motorhomes of texas nacadocias they have several u320s in stock when I went thru last month
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