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Old 03-10-2016, 04:52 PM   #11
Skoolie
 
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Posts: 133
Awesome!....love the people on this forum.
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Old 03-10-2016, 05:07 PM   #12
Bus Crazy
 
Join Date: Apr 2013
Location: Colorado
Posts: 1,402
Year: 1993
Coachwork: bluebird
Engine: 5.9 Cummins, Allison 545
Rated Cap: 2
80 would be cool! i've driven enough across wyoming and montana, that i only dream of 80.

i have a 4.7 rear end, and am stuck at 67mph @2500 rpm.


if i had a 4.1 rear, i'd get 77mph, but best economy around 65mph.

if i had a 3.8 rear, i'd get 85 and best economy in the 70's.

i just dont think my cummins 5.9 has the power for either of those rear ends. going up hills is slow as it is now.

i'm beginning to believe that the best answer is just getting used to slow.
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Old 03-11-2016, 01:34 AM   #13
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Originally Posted by Booyah45828 View Post
You also have different power levels, torque ratios, and the like per engine. A 5.9 cummins from 1990 is vastly different then one from 2007.

That's not even counting transmission options either. Most of the old stuff will have a 1:1 final ratio. Sometimes you can get one with overdrive but it still will only help so much.

The main thing you should be concerned with is rear gear ratio. I don't care what engine you have in it or how much hp, something with a 6.50 won't likely go down the highway at the 70. And if it does, it's going to be redlined.
I agree , and will add " what will your application be " ? I plan to drive 300 miles a day and stay to the main HWY , my coach would be a Motorcoach.
When I think of using park systems ,and some off road adventure , I want a springer shoolie . I want great ground clearance , and low range gears , so what if I go slow up a mountain .

So determine how you want to use the bus and then , the motor heads here can advise , the best running gear for us .

Just my .02c
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Old 03-11-2016, 07:36 AM   #14
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Stock, yes, but what about with a turbo, an intercoolor, larger injectors and a few other modifications? Other things equal, HP helps with the top speed.
Stock form is turbo, inter and/or after cooled.

But yes, once you start carving out injectors to resemble garden hoses, you'll have to be watching the EGT gauge quite close.

The new engines out now in most any brand are fully computer controlled and can pump out some great power with automatic safety features to keep you from damage.
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Old 03-11-2016, 09:31 AM   #15
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Thank you all. I am more convinced that I should buy a skoolie - the question I am dealing with now is "when". I will need a whole summer to do the main upgrades - especially the roof raising. I teach, so have summers off, and during the school year, have NO free time
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Old 03-11-2016, 10:09 AM   #16
Bus Nut
 
Join Date: May 2014
Location: West Ohio
Posts: 626
Year: 1984
Coachwork: Bluebird
Chassis: International 1753
Engine: 6.9 International
Rated Cap: 65
I wouldn't necessarily say when as far as your schedule permitting. It's more of a when the right bus becomes available. It's far easier to get one with all the desired options from the get go then it is to try and fix the right gearing, or the add right power, or the right brakes.

Schools are trading off busses for new all the time, have patience and you might be rewarded. If your bus sits all winter because you bought it in the fall I think you'll be farther ahead.
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Old 03-11-2016, 10:46 AM   #17
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Join Date: Mar 2011
Location: Houston, Texas
Posts: 6,169
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
I absolutely agree with Booyah --- Read up and decide what size & type of bus you want along with all the features you need (engine, trans, gearing, storage, etc.)...then hunt until you find 95% of what's on your list and in good condition at a reasonable price. Unless you go in planning on replacing/rebuilding just about everything on board, the extra bucks spent can get into the Twilight Zone very fast. Better to be patient and spend a few more bucks up front than spend many years and pesos trying to fix the basic platform.

I had a pretty good idea of what I was getting into when I decided to start with a WWII vintage bus, but even having accepted that virtually every system would have to be replaced or upgraded...it has STILL become much more of a challenge than I could ever have imagined. A FUN challenge, but...
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Old 03-11-2016, 01:12 PM   #18
Skoolie
 
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Originally Posted by Tango View Post
I absolutely agree with Booyah --- Read up and decide what size & type of bus you want along with all the features you need (engine, trans, gearing, storage, etc.)...then hunt until you find 95% of what's on your list and in good condition at a reasonable price. Unless you go in planning on replacing/rebuilding just about everything on board, the extra bucks spent can get into the Twilight Zone very fast. Better to be patient and spend a few more bucks up front than spend many years and pesos trying to fix the basic platform.

I had a pretty good idea of what I was getting into when I decided to start with a WWII vintage bus, but even having accepted that virtually every system would have to be replaced or upgraded...it has STILL become much more of a challenge than I could ever have imagined. A FUN challenge, but...
expensive one
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Old 03-11-2016, 04:36 PM   #19
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Join Date: Mar 2011
Location: Houston, Texas
Posts: 6,169
Year: 1946
Coachwork: Chevrolet/Wayne
Chassis: 1- 1/2 ton
Engine: Cummins 4BT
Rated Cap: 15
How'd you guess!?
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