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Old 08-20-2018, 03:41 AM   #15
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Agree with twinboat. Not only is that engine ancient but it has a very bad habit of puking oil on the ground at startup. Not good....then there is the situation where oil usage is measured in gallons not quarts. Stay away from Detroit 8v-71s.
There is nothing wrong with owning these old engines. There are simply an older technology that still works. Yea, its has its traits that aren't favorable but so does my wife....lol. Biggest challenge I would argue as an issue of these engines are knowledgeable mechanics fluent in the language of 2 stroke diesels.
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Old 08-20-2018, 03:43 AM   #16
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Those busses are “city busses “. Meaning they have no basement for storage and equipment. Plus the chassis is geared for city driving. 65mph, not!
This is a highway bus....full luggage compartment.
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Old 08-21-2018, 11:34 AM   #17
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I worked in the bus business a couple of different times in my career. I would be a lot more concerned about bulkhead corrosion than 8V-71s. In a coach, 500,000 miles was possible between overhauls.
These coaches have no frame in the traditional sense, but a series of aluminum bulkheads beneath the floor. The suspension and the drivetrain are attached to them. I doubt that replacements are still available and the process of replacing one is major surgery.
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Old 02-03-2019, 04:34 PM   #18
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It’s not really ancient drive train, the AV 71 Detroit diesel was a bullet proof engine. Did leak quite a bit and use oil but it was nice being able to add kerosene in the winter to it and I would run fine. Today’s engines or computer controlled and not a lot of fun. The old engines if you drove them correctly and maintain them would go forever plus you get great fuel mileage out of him today’s new stuff is all computer controlled and a pain in the blank blank blank if you ask me. And I drive shouldn’t run coach buses so personally the older ones are great. I would go for a 4905 also known as a GMC deck and a half or Buffalo bus because it’s a 40 foot not the 35 foot 4107 you were looking at. The extra 5 feet in them not seem like much but believe me it is. If you’re going to find one call look for a 4905 preferably a PD 4905 or an HDH which is the automatic Transit style version. That was made up until 1980. Either way just make sure that the frames are straight the bulkhead behind the engines are straight and the suspension is good without any major leaks in the air beams or anything. Either way that works thanks and they were great Buses. I wish I still had mine
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Old 02-03-2019, 04:35 PM   #19
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That is definitely a gorgeous bus.

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Me too, had about a million miles on it, have worn out several sticks and staples since then.
That is a work of art. I miss mine.
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