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Old 07-17-2021, 11:12 AM   #1
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Early 80s Prevost conversions

I may be crazy.but looking at an early 80s prevost country coach conversion. the basic coach looks ok but dated . I question in real world terms what is realistic fuel economy, and how reliable are the cruise air units under bus. I know I ts older but so am I. I want to have a reliable, not unreasonably expensive unit to travel in. am I looking in the wrong place? engine 8v92 mechanical and allison 5 speed
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Old 07-17-2021, 11:17 AM   #2
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If you’re concerned about fuel efficiency, don’t buy an RV.
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Old 07-17-2021, 04:26 PM   #3
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thank you for your response but, I already own a gasser that gets about 6.5 mpg I was hoping someone with actual experience could tell me what their 8v92 mechanical rig gets in average conditions. it would be a good thing if this coach didn't suck up so much fuel that I'd leave it sit in the driveway but instead drove it for quick hops on weekends and didn't feel quilty about costs. not everyone has deep pockets but still would enjoy a dp. looking for real input
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Old 07-18-2021, 08:30 AM   #4
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Quote:
Originally Posted by hlagooty View Post
thank you for your response but, I already own a gasser that gets about 6.5 mpg I was hoping someone with actual experience could tell me what their 8v92 mechanical rig gets in average conditions. it would be a good thing if this coach didn't suck up so much fuel that I'd leave it sit in the driveway but instead drove it for quick hops on weekends and didn't feel quilty about costs. not everyone has deep pockets but still would enjoy a dp. looking for real input
It’s gonna get between 6-8 mpg plus the amount of oil it leaks. If you want fuel efficiency you need to look at a small class b or van conversion on a sprinter or transit platform.

An 8v92 is a 738 cubic inch 2 stroke engine. It’s not fuel efficient. If you can’t afford fuel, you’re probably going to have a hard time repairing a 40 year old bus.
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Old 07-18-2021, 08:48 AM   #5
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hlagooty, from my Prevost owning experience and reading, those engines get about 5.0-5.5 mpg.

Not to steer people away from this excellent RV site but its not really Prevost based. You need to join 'www.prevostcommunity.com' to find ALL of what you need to know. The site is free but you have to join as they don't want spammers.

If the coach your talking about has been maintained, that will be a major plus. But if it has been sitting, plan on big bucks to bring it up to snuff!

You didn't mention if you have the ability to do any of the chassis work yourself that WILL be needed, if not, I would probably shy away from an older coach because parts and knowledgable mechanics get scarce as they age.

There are company's that can and will rebuild cruise-air's. The problem with cruise-air's is that they don't work wonderfully when the ground is hot. People report that they will run water on top of the pavement where the cruise-air pick-up air return is located so that cooler air is pulled in. I had 4 roof-top units that work much better and are less finicky.

Good luck and let us know what you decide.

Safe travels,
Mark
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