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Old 06-05-2010, 12:56 PM   #11
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Year: 1992
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Re: After market upgrades for 5.9


That's a good wisecrack, Cal, but the fact of the matter is quite the opposite. It is bending because excessive force must be applied to the pedal in order to bring the linkage to full power against the return springs.

So there are two problems:
Misalignment and binding in the linkage because of wear,
and unfavorable geometry of the return springs. The return spring arrangement is probably the safest for school bus service, but it is murder for us highway runners.
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Old 06-05-2010, 02:41 PM   #12
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Re: After market upgrades for 5.9

A new peddle assembly shouldn't cost that much. In your travels down I5 or 99, there are a few truck parts houses. If you want the names, let me know.
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Old 06-05-2010, 02:55 PM   #13
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Re: After market upgrades for 5.9


Thanks, but the problem with the pedal bending will go away when I get the linkage and springs tuned up. And there is a Blue Bird dealer in Sacramento, if need be.
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Old 08-17-2010, 12:00 PM   #14
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Year: 1991
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Chassis: Ford B-700
Engine: 5.9 liter turbo Cummins
Rated Cap: 28
Re: After market upgrades for 5.9

Quote:
Originally Posted by nevrenufhp
In reality, you can make great power by just sliding your fuel plate forward, considering it has the Bosch P-pump, not the VE rotary pump from the older ones. If it's got the rotary pump, and with no intercooler it probably is, there's a few freebie mods to that one too. The first thing is to do the gov spring(around $20), then adjust fuel screw, and rotate the diaphram. It would be a really good idea to have an intercooler, and one from a 91-93 Dodge may just be the right fit. By all means, get a pyrometer too!
Nevereufhp (or anybody else): Any chance you could post pictures of the fuel plate and the intercooler? My turbo has two air inlets that connect to ducts on either side of the radiator. Is it intercooled? Please excuse my ignorance. How much "sliding forward" is enough?

My engine plate says "Ford Cummins 5.9L 175 HP". I would sure love some more HP for climbing our Mexican mountains! Would an injector change help, without screwing up fuel economy too badly?

By the way, mine has the 5-speed Spicer standard tranny, so I am not to concerned about hurting it. I am also considering switching to a 2-speed rear end. (Or maybe I can get lucky and find a 3-speed Brownie auxiliary transmission, like we used in the old days!)

Dr. Steve, central old Mexico
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Old 08-17-2010, 01:29 PM   #15
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Re: After market upgrades for 5.9


Hey XE1UFO -- how am I supposed to pronounce that name?

You do have an intercooler. But you want to look more closely at where the ducts go. The intercooler resembles a radiator. The intercooler is in front, and the radiator behind it.
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Old 08-17-2010, 07:42 PM   #16
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Re: After market upgrades for 5.9

Quite simply, you pull off the top cover that has 4 bolts(1 is a rounded breakoff screw).

Then, loosen the 2 screws on the fuel plate that's just under the cover. Slide it forward, but you dont have to push it all the way forward if you dont want the full power.

I slide mine ( or who ever's rig I'm working on) full forward, and use your foot to control the power and exhaust temp. With it rated at 175, you would probably gain 40-50hp and around 90-100 pounds of torque with it slid full forward.
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Old 08-20-2010, 09:21 AM   #17
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Re: After market upgrades for 5.9

Thanks a million, Mr. Neverenoughhp!!! Wow! that doesn't look too difficult to do.

About the XE1UFO: That is my Mexican government-issued ham radio call sign, as in X-ray Echo One Uniform Foxtrot Oscar. North of the Río Bravo (Rio Grande, for you gringos). the FCC knows me as KA5SUT:Kilo Alpha Five Short Ugly Texan.
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Old 08-20-2010, 10:09 AM   #18
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Rated Cap: 84
Re: After market upgrades for 5.9

Thanks heavens! I was getting a permanent kink in my tongue trying to pronounce the call sign as one word.
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Old 01-14-2011, 02:01 PM   #19
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Rated Cap: 65
Re: After market upgrades for 5.9

hey fellas, I know this link hasnt been used for a bit, but could you tell me were i could find the spring kit, maybe online? I have the 96 ford amtran 5.9l turbo with the at545, ANY help would be greatly apreaciated, I feel like a rollin road hazard at 65, which is the top speed for my bus as of right now. Also the accelerator pedal is stiff as a 2x4....any suggestions?
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Old 01-14-2011, 07:09 PM   #20
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Re: After market upgrades for 5.9

Quote:
Originally Posted by headin2MT
hey fellas, I know this link hasnt been used for a bit, but could you tell me were i could find the spring kit, maybe online? I have the 96 ford amtran 5.9l turbo with the at545, ANY help would be greatly apreaciated, I feel like a rollin road hazard at 65, which is the top speed for my bus as of right now. Also the accelerator pedal is stiff as a 2x4....any suggestions?
Throttle return springs, or governor springs?
My suggestion to get past 65? re-gear the rear, then hike up the power. If you go down the road at 3000rpm the engine will get horrendous mpg, and live a shorter life. The extra rpm are associated with helping accelerate, not for sustained use.
Here's a good deal on a gov spring set, the 2 cheapest places I know:
http://www.citydiesel.net/governor-spri ... h=22_26_49
or,
http://www.pdrdiesel.com/products/3000_ ... 82-35.html
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