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Old 09-20-2006, 05:02 PM   #21
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Hey thanks, Jason! Your pump looks nearly identical to mine (as it should) though I'm unable to verify that that is exactly how mine is laid out since the bus is 60 miles from here right now, but I will give it a look this weekend.

Can you explain what to expect out of each screw? Does the smoke one also control the idle speed?
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Old 09-20-2006, 05:44 PM   #22
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Turning up the fuel delivery rate does not affect idle speed, it will however make black smoke come out your exhaust when you step on the throttle until the turbo spools up. You can move the "star wheel" Turning it one way makes more smoke, the other direction causes less smoke. Many people apparently don't mess with the wheel at all and just let the engine smoke a bit on takeoff. To fix the smoke problem, you have to remove the smaller plug and turn the "star wheel" This effects how much diesel fuel is pumped into the cylinders before your turbo spools and boost pressure is created.

here is another good link that describes how to turn up the fuel delivery rate


http://www.thedieselgarage.com/forum...6958#post66958

Tightening your govenor springs will cause the rpm to increase. This mod is desirable because it also increases the engines max rpm. My engine is rated for 3100 rpm, but was governed @ 2,400. I turned it up to about 2,700. After you tighten your springs, you will have to back off the idle speed screw. This is the screw that is connected to the throttle linkage and is diffeent on just about every vehicle.

here's a good link for the gov springs....it's a tutorial on how to install new springs, but if you simply tighten your current springs about 2-3 clicks it'll increase your rpm's. The tutorial is for a cummins 5.9, but the same pump is on the DT series and the ford 6.6/7.8 litre.

http://www.flex.net/~triplem/new/govspring.htm

while i'm at it, here is a link to a newer style 466/360/5.9 pump. Instead of installing the "new" fuel plate, you can grind down your old one...if you really wanna do this let me know and i can find more data for ya, even though i have not actually done this.

http://www.tstproducts.com/INSRUCT98.pdf
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Old 02-23-2007, 12:38 PM   #23
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i have turned up the fuel delivery rate, and tightened the governor springs. I'm very pleased with both mods. I don't have a skoolie dyno, but i can feel in the seat of my pants significantly more accelleration with the increased fuel delivery rate.

I've driven 1K miles or so with the increased fuel rate and have had no problems as of yet. If i take the bus out west again i'll be curious to see how it's hill climbing ability has improved.

as far as fuel economy......i have not actually checked to see if the bus now gets fewer mpg, but one would assume that it does. I do keep the gas pedal @ ~3/4 throttle now to do the same speed i used to keep the pedal all the way to the floor. At speed on flat ground the bus might not use much more fuel, but as far as hillclimbing and accelleration i'm certian it'll use fuel at a faster rate.
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Old 02-23-2007, 07:01 PM   #24
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Here;s a link with instructions for just about any diesel we might have in our buses. After reading the various methods, I sure am glad I have an inline Bosch pump.

http://www.geocities.com/kaufmanns@s...rformance.html
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Old 02-23-2007, 07:57 PM   #25
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Quote:
Originally Posted by the_experience03
Here;s a link with instructions for just about any diesel we might have in our buses. After reading the various methods, I sure am glad I have an inline Bosch pump.

http://www.geocities.com/kaufmanns@s...rformance.html
that's the site i got my instructions from...very informative
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Old 07-21-2007, 01:19 AM   #26
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Re: more power from your diesel engine

someone was looking for this link.....i finally found it!

just an update on the bus:

everything seems to be just fine after lots and lots of miles. I'm getting ready to take her out to nevada and back again on a 5K mile road trip.
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Old 07-22-2007, 10:16 PM   #27
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Re: more power from your diesel engine

found this the other day....with pics...

http://www.freewebs.com/nevrenufhp/index.htm
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Old 03-31-2008, 03:34 PM   #28
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Re: more power from your diesel engine

i took her out west for another 5K mile roadtrip. My fuel economy was significantly higher this year than in any previous year. I don't remember what the final numbers were, but above 8 mpg. I had been averaging between 6 and 7 mpg in previous years. Hillclimbing was amazing compared to how she used to perform. The only problem i discovered is that the engine now makes more heat than the cooling system is able to dissipate while hill climbing. I never had to stop, but did have to let off the gas pedal a bit to keep things from getting too hot. Having an electric fan in conjunction with the stock fan might help solve this issue.

You might think that 2 mpg isn't a big deal, but it equates to several hundred dollars on a 5K mile roadtrip.

i definitely recommend turning up the fuel, and turning up the governor on one of these motors!
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Old 03-31-2008, 09:44 PM   #29
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Re: more power from your diesel engine

Well, I have the 5.9 cummins and the '95' p-style pump. I am interested in getting a little more out of my engine. Just to clarify, you actually got better fuel mileage after turning your engine up? I think I already know the answer here, but I will ask just to see if I am wrong, Does turning up the Horse Power hurt anything if I convert it to veggie? I would not think that it would make any difference what fuel it is using, but please tell me if it does.
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Old 03-31-2008, 10:54 PM   #30
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Re: more power from your diesel engine

I expected to get worse fuel economy, and i have no scientific way to explain it, but i actually got better fuel economy after i turned up the hp on my bus. This wasn't just a short term test, but a 5K mile roadtrip. I've done the same trip 3 times with the same bus...although year two i was loaded really heavy. I drove a total of about 30K miles with the bus, and the last 8 or 10 thousand was with the higher horsepower.

After i turned up the fuel, i went from driving with the pedal to the metal most of the time to having hte throttle at about 3/4 to maintain the same speed....about 60 mph for me.
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