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Old 10-02-2008, 01:09 AM   #11
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Re: Detroit 8.2T Turbo Diesel Blue Bird School Bus

you have to have enough battery voltage to keep the engine controller turned on while cranking, at some point around 10V the ECU will switch off and you don't have any control of the injectors. = no start condition,
The new electronic engines are user friendly and super efficient until you have a problem, then their is nothing like good old fashioned mechanical injection.
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Old 10-02-2008, 09:01 AM   #12
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Re: Detroit 8.2T Turbo Diesel Blue Bird School Bus

For the most part, the 8.2 needs a lot of cranking to start anyway. Go for the stax!
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Old 10-02-2008, 11:35 AM   #13
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Re: Detroit 8.2T Turbo Diesel Blue Bird School Bus

stacks or 4+ inch out the back with mandrel bends and no muffler
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Old 10-03-2008, 05:24 PM   #14
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Re: Detroit 8.2T Turbo Diesel Blue Bird School Bus

mechanical injection pumps need a lift pump to supply them with fuel, they pressurize the fuel to high pressure and distribute it to the injectors, they do not have a provision to transfer or lift fuel from the tank and thru the filters to the high pressure pump.
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Old 10-03-2008, 10:33 PM   #15
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Re: Detroit 8.2T Turbo Diesel Blue Bird School Bus

The 8.2 uses unit injectors that act both as the injector and the high pressure pump, much like the older 2 stroke Detroits. This is what makes it advantageous in theory. In reality I don't think I've seen nearly as many 8.2 WVO conversions as I have seen of those running the Bosch MW or P series inline pumps.
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Old 10-05-2008, 03:27 AM   #16
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Re: Detroit 8.2T Turbo Diesel Blue Bird School Bus

So i bought the bus and it wont start but we think that with some new batteries that it should be alright. also what does everyone think about train horns, stacks, air filters/systems, and other accessories and new alternators? thanks for your time.



kl
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Old 10-05-2008, 03:31 AM   #17
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Re: Detroit 8.2T Turbo Diesel Blue Bird School Bus

so the gent i bought the bus from lives on top of a mountain and you should see the dirt road up to his house, its crazy and has hairpins so it must do just fine on hills and i have abondoned the veggie bus idea because this thing is for winter use. to the person who posted this


"stacks or 4+ inch out the back with mandrel bends and no muffler" would you mind pming me. this sounds very interesting but i dont know what it means. what about stacks right behind the engine? and i was thinking no muffler but what about the mandrel bends?

thanks everyone for their time


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Old 10-05-2008, 03:35 AM   #18
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Re: Detroit 8.2T Turbo Diesel Blue Bird School Bus

does biodeisel do okay in the cold winters?

thank you for your time


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Old 10-05-2008, 09:07 AM   #19
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Re: Detroit 8.2T Turbo Diesel Blue Bird School Bus

mandrel bends = full diameter, not crimped or restricted like most exhaust systems. your aftermarket big truck parts supplier can get 90% mandrel bends, 10 ft sticks of straight pipe and turbo flanges, it then becomes an exercise in cut,fit and weld a low restriction exhaust system. take your time, getting from the turbo to under the bus and paralell with the frame is time consuming after that your home free. straight back over the axle and under the rear bumper.
your other option would be to use the stock turbo down pipe and then fab an adapter cone up to your chosen exhaust size.
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Old 10-05-2008, 09:42 AM   #20
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Re: Detroit 8.2T Turbo Diesel Blue Bird School Bus

the exhaust doesn't need to exit the rear of the bus. it's just some silly rule put in place to keep children who ride the bus from sucking in diesel fumes. 30 feet of exhaust pipe is not needed on a skoolie conversion. You could exit in stacks right behind the motor, or onto the ground kind of pointing to the side anywhere under teh bus.

Buses tend to have 4" exhaust. I don't think this is the restriction in the system. It's the puny low hp motors that make buses slow, not the engines ability to breath.
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