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Old 09-30-2005, 10:41 AM   #1 (permalink)
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How much to rebuild an Detroit 8V92 in a bus?

Any rough ideas what the cost is to do an in-frame on a Detroit 8V92?

I'm looking at a bus with an 8V92 and unknown miles right now. I am assuming at some point it will need a rebuild.

The bus is a Prevost and will be taken to a Prevost service facility for a complete inspection before I even think of buying it.

Brian Elfert
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Old 09-30-2005, 01:43 PM   #2 (permalink)
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Re: How much to rebuild an Detroit 8V92 in a bus?

probably big bucks. I'd guess 20 grand or so from a reputable shop. but I guess if you can afford a prevost, then it's no big deal. [img]/ubbthreads/images/graemlins/wink.gif[/img]
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Old 09-30-2005, 02:17 PM   #3 (permalink)
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Re: How much to rebuild an Detroit 8V92 in a bus?

This is a used Prevost seated coach for less than $20k with a 8V92, not a motorhome. Any MCI coach with a 8V92 is going for over $30k.

I want to do an inexpensive conversion to a motorhome.

The price may be cheap for a reason, so that is why I will spend $500 or so to have one of Prevost's factory service centers do a full inspection before purchase.

Brian Elfert
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Old 09-30-2005, 10:10 PM   #4 (permalink)
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Re: How much to rebuild an Detroit 8V92 in a bus?

What year of Prevost. What tranny? (tired Allison = $ [img]/ubbthreads/images/graemlins/mad.gif[/img]) Make sure they pull the air box covers and check the rings & oil sampling might help too.
Good luck, big job [img]/ubbthreads/images/graemlins/tongue.gif[/img]
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Old 09-30-2005, 11:29 PM   #5 (permalink)
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Re: How much to rebuild an Detroit 8V92 in a bus?

Sorry, if you can wait a week I can ask the parts guy for prices. Send me a pm reminding me. I forget things most times. Oh, I am going on vacation for a week and I tend to forget all for that time period. Yes have the airbox covers removed and inspected, oil sample ok, mileage on engine/bearings, If you buy this coach then replace the mains and rod bearings. Yes take the oil sample, look for coolant in the oil. 1 tablespoon in the oil pan is enough to spin the mains on these 92 series. Yes 1 tablespoon.Look at the engine closely, look for unuse conditions, rust on the coolant system pipes, cracked/brittle hoses, bad oil leaks, If the coach is worth it then do a stall test to check for excessive smoke. Good way to check vehicle brakes as well. BTW, there is no inexpensive way to build a motor home. Start with a real repair job on the guts of the beast, The drive train. Then add the goodies. Seen a lot and seen some I would like to pass on working on. Good luck.
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Old 10-01-2005, 02:18 PM   #6 (permalink)
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Re: How much to rebuild an Detroit 8V92 in a bus?

[ QUOTE ]
What year of Prevost. What tranny? (tired Allison = $ [img]/ubbthreads/images/graemlins/mad.gif[/img]) Make sure they pull the air box covers and check the rings & oil sampling might help too.


[/ QUOTE ]

1989 LeMirage XL with 8V92 and Allison HT-750 S tranny

I need to call the salesperson again on Monday to get more details. The salesperson was claiming the LeMirage XL has under 72" of headroom which is why I didn't go any further. I have since talked to Prevost and they said that model has a minimum of 80" headroom. I think the salesperson just wanted to sell me an MCI instead.

The coach is being sold by MCI Coach. I'm guessing it was traded in on a MCI coach.

Brian Elfert
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