Found an incredible Prevost auction.

[Wayne M.]

http://bringatrailer.com/listing/1968-prevost-coach/
A cool auction site I've been turned on to. This thing is incredible- read the story!

 

[SnoKing]

Wonder what RV resorts with 10 year rules would say about this. Newer Prevost(but over 10 years old) seem to get green lighted. Probably would ask for pictures, like they did for my 11 year old 5th wheel.

SNOKING

 

[RUSSELL5000]

Ok, that is awesome! I like that coach.

I note it has the engine Mike Wilson said to be sure to avoid.

 

[Wayne M.]

Yea, you have to be a real diesel nerd or a gear head to own this.

 

[RUSSELL5000]

Yes, although I really like it, I would not get one. As Wayne points out you would have to have the knowledge and tools OR the money to pay for the work.

I don't have either one!

Still, I like it!!

 

[mwilson]

I'm not that far away from it Russell........

 

[mwilson]

Run right over and get it for you, just send money.......

 

[mwilson]

Actually the 71 series is dry sleeved, not wet sleeved like the 92 series. Still have to know the engine though. Reverse rotation drive axle as well.

They must have refurbed the front and rear panels when it was converted in 1985 because the headlights and tail lights are not 1968 vintage for sure. I wonder what the coach A/c system carries for refrigerant, it might have the super pricey R-12 or R-22 still in it. Also wonder how much remains 24 volt.

I have to say with the current exchange rate I'm kinda' watching the thing.

 

[SnoKing]

All motor homes are expensive to maintain compared to RV trailers. Much more complicated systems and more of them. Regarding buses like this, I have a friend with a MCI M-9 conversion. It has three separate DC systems. 12V, 24V and 48V. It has a 6V92 and Allison auto. It is a beautiful conversion, however EVERY thing on it is hard to work on. He has worked on a fuel starvation issue for the last few years.

I will stick with RAM trucks and 5th wheel trailers, thank you!

SNOKING

 

[mwilson]

Fuel starvation upon start up or is it under power???

 

[Wayne M.]

I'm glad y'all are getting a kick out of this one. It's a cool site with lots of unusual vehicles you wouldn't normally see.
Mike, are you really watching this? I wonder what transmission it has?

 

[mwilson]

I'm glad y'all are getting a kick out of this one. It's a cool site with lots of unusual vehicles you wouldn't normally see.
Mike, are you really watching this? I wonder what transmission it has?

I am kinda' thinking about it, but not if it goes too high. There must be a reserve on it BUT it is a vehicle that only works for a very limited amount of buyers. I can work on it and have many resources, even have a tire department at my disposal.
I kind of like buses instead of motor homes, more truckish to me. And my father is one of the best 2-stroke techs in the state. He may not be strong enough to pull the wrenches anymore but he can sure tell me what to do if needed.

I don't know what the 4 speed would be. In that vintage it is quite possibly a Spicer which could lead to parts problems. Gonna' be a long jump between gears for sure.

The unit is old enough for an easy border crossing, there is an age exemption. I hauled used equipment out of Quebec years ago, that's why I know that.

 

[mwilson]

A "Toad" will suffer some serious splatter following it for sure...........:-laf

 

[Wayne M.]

Yes this way off the scale on the cool meter. If you get it, I'm coming up to see it !

 

[mwilson]

Gotta' show it to the wife tonight, see if I get a "Cool" or a "Yuck, WTH is wrong with you?".........

 

[SnoKing]

Fuel starvation upon start up or is it under power???

Under power. Snoking

 

[mwilson]

Fuel shut off can cause that. If the shut off arm on top of the governor housing is not going full travel then the fuel rack cannot open all of the way.Maybe he has already checked that but it was a common problem with air/electric shut off units.

 

[SnoKing]

Fuel shut off can cause that. If the shut off arm on top of the governor housing is not going full travel then the fuel rack cannot open all of the way.Maybe he has already checked that but it was a common problem with air/electric shut off units.

I will pass that on to him. They have tried many things. When we stopped in California for a few days at his place there we hooked up an electric fuel pump and cycled fuel from the tank draw line back in to make sure it was not a problem with the pickup tube. He gets out on the road and it is running along ok, and then will just starve out. It has a maze of fuel lines and a fuel block on the ceiling of the engine compartment. If I recall correctly is has two engine driven mechanical fuel pumps, one for each bank.

I drove a Titan 90 Chevy for three years back in the late 70's with a 350 8-71 and only once had a fuel problem with air in the system via a bleed valve that got bumped open while in for electrical service. Other than that it was run it up to governor shift and run it up again. And don't idle it very long. Thanks Snoking

 

[Wayne M.]

Sno, what year is the engine in that conversion? Is it mechanical or DDEC?

 

[mwilson]

6V-92 should only have one pump, mounts to the forward end of the blower unit. They send an incredible amount of fuel back to the tank through the return line. There are two passages in each cylinder head, one pressure and one return. The injectors draw and return fuel from those passages, how much depends on the position of the fuel rack connected to each injector.

The shut off could be getting weak, as it gets hotter it relaxes. Another thing I have seen is deteriorating or improperly assembled fuel lines with a flap of rubber swinging inside of the line which will restrict fuel flow. Another common problem was something floating in the tank such as the foil from a fuel treatment bottle or even a rubber glove. Gets sucked up against the pick-up tube when the fuel is really moving and then drops off as soon as you shut the engine down. Those can be real fun to find.