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Author Topic: Motor cooling on a Scenicrusier  (Read 2416 times)
roadrunnertex
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« Reply #15 on: July 25, 2008, 06:01:15 PM »

After the Scenicruisers were sold out of the Greyhound fleet it's no telling what kind of a power plant the different owners have installed in these old Scenicruisers.
When Greyhound had Marmon-Herrington rebuild the 980 remaining Scenicruisers in 1961.All of the Scenicruisers  received the 8V/71 and the 4 speed Spicer transmission.
After the rebuild the Scenicruisers went on in Greyhound service for another 10 to 15 years it was a record for a coach in Greyhound service.
The old Scenicruisers are still a head turner when you see one that's out on the road today.
I know of a few that have been restored back to Greyhound colors and the owners of these coaches say every where they go people will come up and say I remember these old buses when they were in Greyhound service.
Try that with a MC-9 or a MC-12 it looks like any other bus out on the road today.
They all look alike a shoe box on wheels!
lv

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jackhartjr
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« Reply #16 on: July 25, 2008, 06:47:35 PM »

John, I wonder what they did with all of the 471's and that fluid driver tranny?
Hope you and yours are doing GREAT!
Jack
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Jack Hart, CDS
1956 GMC PD-4501 #945 (The Mighty SCENICRUISER!)
8V71 Detroit
4 speed Spicer Trannsmission
Hickory, NC, (Where a call to God is a local call!)
roadrunnertex
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« Reply #17 on: July 25, 2008, 07:12:17 PM »

Good question
I have heard that a lot of the old 4/71's went out in the oil field for powering various equipment but this is just here say on my part.
The truth be known I bet Greyhound sold them just for core/scrap charges just to get rid of those old worn out power packs.
The first Scenicruiser that I got to see after the rebuild was in the summer of 1962 and my dad was driving for Greyhound and he made it a point to show me a rebuilt Scenicruiser.
I was impressed with the rebuild and the 8V/71 powerpack made it a lot nicer for maintenance.
That was 46 years ago where did the time go? Huh
jlc Tongue



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makemineatwostroke
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« Reply #18 on: July 25, 2008, 07:34:12 PM »

Jack that set up wasn't made for Greyhound only they are still around in the west Texas and New Mexico oil fields and the gulf coast marine industry 2- 471 0r 2-671 with the Twin Disc or Allison torque converters and the quad 671 Detroits with a torque converter how would you like that in your Scenicruiser
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jackhartjr
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« Reply #19 on: July 25, 2008, 07:47:22 PM »

Actually MakeMineATwoStroke, i would love to have one to convert back to original, course I need to finish the one I am on now!LOL
I understand someone in California did a conversion back to original 2 engines, that is hearsay though.
Thanks for the input!
Jack
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Jack Hart, CDS
1956 GMC PD-4501 #945 (The Mighty SCENICRUISER!)
8V71 Detroit
4 speed Spicer Trannsmission
Hickory, NC, (Where a call to God is a local call!)
Michael_e
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« Reply #20 on: July 25, 2008, 08:37:38 PM »

Don, I've got a Scenicruser, serial - 278. I've got it repowered with a 8V92TA and maybe it's just me, but it seems like that takes up a fair amount of room. How much longer is the 12V compaired to the 8V? On the ones you worked on with the 12V was that center adjusting post in the rear of the engine compartment removed to make extra room???

Mike
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1955 GM Scenicrusier, 8V92TA & Allison 754. Totally rewiring all 12v systems and lots of questions.
tekebird
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« Reply #21 on: July 25, 2008, 08:43:59 PM »

all the V-71 series engines share the same Piston/Cyl Diameter

with that logid the 12 v should be 50% longer than the 8v
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makemineatwostroke
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« Reply #22 on: July 25, 2008, 09:08:49 PM »

FWIW the 12v71 is 60 inches from fan to flywheel , the 12v92 is 68 inches and the 8v92 is 44 to 49 inches long depending on the engine spec
« Last Edit: July 25, 2008, 09:34:25 PM by makemineatwostroke » Logged
TomC
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« Reply #23 on: July 26, 2008, 09:42:58 PM »

Tekebird-that logic sounds good on paper, but remember that you have the gear drive on the rear and the waterpump/thermostat on the front so it isn't an even 4 cylinders for the 8V.  If you have a 44" 8V, the 60" 12V is a little more than 50% longer, but then who's counting?  If I had a Scenicruiser, I'd put in a 12V-71N with 60 injectors.  These would get you 420hp with 1150lb/ft torque, and resonable fuel mileage.  Good Luck, TomC
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Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.
kingfa39
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« Reply #24 on: July 27, 2008, 09:37:07 AM »

dont know much about the senecruiser , i rode one on a long trip when they still had the twin engines, it was the quietest thing you could imagine and very fast, had a wreck in KY when it hit a 48 plymouth that was dead in the road throwing it about a half a block, nobody hurt, was nightime, the only visable damage was a broken headlight on the bus, made me a GM fan from that day on, too bad they couldnt have corrected the problems with them. i think it was the best bus ever made ( just an opinion))
The bus was a 1955 model, trip was Tampa to detroit witha single stop in lousville i think for fuel
Frank allen
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Bob Belter
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« Reply #25 on: July 27, 2008, 12:44:50 PM »

Ahoy, Busfolk,

The 12V-xx ---  Sounds.
 
Years ago, the A$S Metals Co. in Castroville CA had a metal 'beater-thrasher' with a 12V-92
engine, and very heavy driven wheel and flail assembly.

When that howling monster started and slowly wound-up all that 'stuff', it sounded like the sound track from a science fiction movie!!!

Enjoy  /s/  Bob
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