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Old 07-19-2007, 01:55 PM   #1
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Increasing Horsepower

Hi,

I know there used to be a tutorial on how to turn up the HP on a Ford deisel engine but I can't seem to find it. I know there's some internal nut somewhere but I dont rememebr what needs to be done. Step by step instructions would be a HUGE help.

I have 1991 Ford Thomas 67 Passanger Skoolie - 6 Cylinder Diesel.

The more help the better! I can't take another 18 MPH drive through the rockies.

viking alex

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Old 07-19-2007, 07:21 PM   #2
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Re: Increasing Horsepower

Look at it this way, at 18 mph it gives you time to look at the scenery. I know, thats not funny. Maybe this link will be what you are looking for.

http://www.freewebs.com/nevrenufhp/index.htm
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Old 07-19-2007, 09:28 PM   #3
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Re: Increasing Horsepower

I think the very first step to adding more power is going to be to add a tranny temp gauge and a pyrometer for the exhaust. It's really easy to add power to the Brazilian engines, but you need to do so safely. Upping the power until you're doing 45mph up those long passes might sound great, but the few minutes it saves you aren't going to be worth it when you have all kinds of downtime from a slipping AT545 or worse yet (well...more expensive anyway), a set of pistons with holes burned through them.

That said, that site is full of information for mechanical diesels. Just be realistic. The 185hp version of the 6.6 already technically exceeds the input torque ratings of the AT545.
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Old 07-21-2007, 01:25 AM   #4
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Re: Increasing Horsepower

i've seen DT466 engines coupled to the AT545..........

I had a 72 passenger bus with the 6.6 liter..........wow was it gutless! Climbed an 8% grade at a solid 21 mph....that was a lot of fun.

Great bus though, it had nearly 300K miles on it when i sold it a couple years back. for all i know she'ss still running today.

I just spent 20 minutes searching for the topic on how to turn up your injector pump......and i'm the one who wrote the silly thing. The photos are from a DT360, but it has the same pump as the brazilian ford. Although the ford pump is on the opposite side of the engine...and it's probably grey instead of blue.

I agree that you should have a temp guage for the trans and a pyro guage for the exhaust. You would benefit tremendously from increased fuel deliver rate (more hp) and from turning up the govenor (higher rpm). Don't have a tach? All the buses i've seen have been set from the factory hundreds if not 1K rpm slower than they are rated for.

just for reference if my memory serves me right i had about 5.56:1 rear gears with allison at545 and was turning about 2300 rpm @ 55mph. tires are 10r22.5
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Old 07-26-2007, 03:48 PM   #5
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Re: Increasing Horsepower

link to photos / tutorial?
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Old 07-26-2007, 07:50 PM   #6
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Re: Increasing Horsepower

http://www.freewebs.com/nevrenufhp/index.htm

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Old 08-12-2007, 03:43 PM   #7
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Re: Increasing Horsepower

after that long post of mine, i seem to have forgotten to post the link

http://www.skoolie.net/forum/viewtopic.php?f=6&t=588

its a tutorial with photos of my dt360
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