Detroit 6v92

[Sleddgracer]

Ronnie, yes a typo, in 2005 a Swedish stifling submarine sank the USS Ronald Reagan during a wargames.
Stirling engines are somewhat a pet of mine. In Dory we actual have a stirling cycle freezer that is more efficient then other technologies. We have two imported whispergen stirling combined heat and power generators that run on natural gas. To me the stirling principle is fascinating since it is reversible.
Anyhow sorry for interrupting this thread.
Later j

it's all fun and games until someone loses an eye ( or ship ) then it's called sport

 

[Ronnie-SKO]

Ronnie, yes a typo, in 2005 a Swedish stifling submarine sank the USS Ronald Reagan during a wargames.
Stirling engines are somewhat a pet of mine. In Dory we actual have a stirling cycle freezer that is more efficient then other technologies. We have two imported whispergen stirling combined heat and power generators that run on natural gas. To me the stirling principle is fascinating since it is reversible.
Anyhow sorry for interrupting this thread.
Later j

You might be interested in looking up Myers Model engines. They have a number of hot air engines kits. We only have steam engines.

 

[Ronnie-SKO]

Neat video on driving a 1959 GMC truck with a detroit diesel, and 10 speed road ranger trans.

 

[o1marc]

Neat video on driving a 1959 GMC truck with a detroit diesel, and 10 speed road ranger trans.

Sweet music.

 

[tugboater-SKO]

Should I run away from buses with this engine?

I wouldn't. They were widely used in marine applications for many many years because of their reliability. Add oil & go!

 

[Iceni John]

Back to the OP's original question - what specific buses are being considered here? The 6V92 was used in only three school buses: the Crown Supercoach Series II (like mine), the Gillig Phantom, and the Carpenter RE. The first two of those are worth getting, and the last one, well, let's be nice here, it may not be the best choice considering the alternatives . . .

The 6V92 was also widely used in other buses such as MC9s, Eagles and some GMs, but they're all "real" buses according to the BCM folk! The supply of anything with a 2-stroke is fast drying up as states outlaw them, so buy one now while you can.

John

 

[WARGEAR]

I had a 5 axle Oshkosh PLS while I was a mechanic in the Army. It had the 8v-92TA. Completely ball-less, but I attributed it to the neglect it saw from previous operators. Couldn’t move up any type of grade at more than 5mph and topped out from lack of power at about 40mph. But I still loved it (named her Cinnamon on account of all the rust). It’s a brutish sound those 2-strokes. They do leak oil from almost every gasket and the slobber tubes. Most will say don’t lug them, overheat them, or idle them for extended periods. Basically either drive it like you mean it or shut it down. They also can run away, for a few reasons, mainly from poor maintenance or neglect. There are very few people who know anything about these motors, and those who do are specialists or getting up there in years. Fuel economy won’t be good, but longevity can make up for that.

 

[vintageracer]

Drove an old Mack truck in the oil field with a 8V71 and a quadra-plex transmision (2 shift Levers).

Go thru 1st-4th gears to get it going and shove in direct to go down the road.

What a piece of junk it was.

 

[Sleddgracer]

Drove an old Mack truck in the oil field with a 8V71 and a quadra-plex transmision (2 shift Levers).

Go thru 1st-4th gears to get it going and shove in direct to go down the road.

What a piece of junk it was.

I drove an old Mack B49, gas pot, 2 transmissions -the one transmission was all most drivers used and was so loose it was sloppy - the 2nd transmission had been used so seldom it was still tight like new - the two transmissions reacted to a shift so differently, there was no way you could shift both at the same time - tandem with a 20' deck, used for short hauls of 5 miles each way for most of it's life - I was the lucky guy that got to drive it in the mountains on 50 mile trips - what a pain that was

 

[GWRider-SKO]

My Crown has the 6-71TA. I love the sound when the RPMs are in the sweet spot (1800-2200). As mentioned earlier do not let them overheat and do not lug the engine (especially on these two strokes). Keep the fluids clean and it will practically out last anything you have in store for it. There is a reason they have been around so long :biggrin:

 

[dan-fox]

There's a guy on YouTube named "Bus Grease Monkey" who makes his living out of an old Greyhound gypsying around twisting wrenches on the old DDs. Entertaining material, and a good education on them if you watch a lot of them.

 

[Johnny Mullet]

I watch his channel. I have worked on these 2-stroke demons and they are pretty awesome. When I went to diesel school back in 1989 our class rebuilt a 6-71 Detroit Diesel. I have even considered swapping a 6V-71 or 8V-71 in my Thunder bus matched with a 10 speed or better tranny if anything ever happened to my 7.3L engine, but I would be better off finding an old Crown or similar bus if that were the case.

 

[pengyou]

I have read from a few obscure sources that Detroit made a flat 8 cylinder diesel engine. Does anyone know anything about that?

 

[Willie_McCoy]

I have read from a few obscure sources that Detroit made a flat 8 cylinder diesel engine. Does anyone know anything about that?

Never seen or heard of a Detroit inline 8 either horizontal or otherwise. Doesn't mean its not out there. It would be absolutely huge.

Plenty of horizontal 671's and even some 4-53's IIRC.

Cummins made a horizontal version of their 220/262 (743) back in the 50's-70's but they are super rare and extremely hard to find and get parts for.