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Old 12-03-2011, 05:57 AM   #1
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downsizing class A from 36 gas to 30 diesel

I have a 2003 holiday rambler vacationer 36 1/2 foot Gasser with 2 slides thinking of going 28 to 32 diesel with 2 or 3 slides. What HP should I go? Would like to get used maybe 5 years old depending on price any suggestions on HP and make.
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Old 12-03-2011, 02:19 PM   #2
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Rule of thumb is no less then 10HP per 100lbs of weight. So, if the RV weighs in at 18,000lbs, you'd want at least 180HP. More is better of course. The bigger the engine, generally, the lower the fuel mileage, but the faster you'll go uphill.

Others will probably just say get the biggest available.
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Old 12-03-2011, 02:35 PM   #3
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Good luck in your search. I have not seen a lot of diesels in that size.
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Old 12-03-2011, 03:30 PM   #4
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Winnie built a 32' Journey diesel with 300HP Cummins, and some had the 6-speed Allison tranny. Sweet setup for mileage. I would guess it averages close to 10mpg. I think the last year the 32' Journey was built was around 2005.
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Old 12-03-2011, 11:27 PM   #5
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Old 12-04-2011, 08:02 AM   #6
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Might be a Math Issue

Quote:
Originally Posted by Jim_HiTek View Post
Rule of thumb is no less then 10HP per 100lbs of weight. So, if the RV weighs in at 18,000lbs, you'd want at least 180HP. More is better of course. The bigger the engine, generally, the lower the fuel mileage, but the faster you'll go uphill.

Others will probably just say get the biggest available.
10HP per 100lbs in this case would be 1800hp. Maybe 1hp per 100lbs?

2000 32' Bounder F53
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Old 12-04-2011, 09:27 AM   #7
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Quote:
Originally Posted by Peterd503 View Post
10HP per 100lbs in this case would be 1800hp. Maybe 1hp per 100lbs?

2000 32' Bounder F53
I must have said it wrong but: 18,000lbs/100=180.
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