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Old 07-02-2010, 11:39 PM   #571
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Re: The Millicent Chronicles; two foot roof raise, big tailgate

Is the fuel plate something common on all the engines or just certain makes?

Quote:
Originally Posted by Elliot Naess

Update:

Had the injection pump "turned up". Oh, yes.

With the tachometer and pyrometer finally installed, I arranged with our very own Nevrenufhp to adjust Millicent's "fuel plate" and governor springs. The "fuel plate" serves as an internal throttle stop, limiting maximum power. Dale slid it all the way forward, which gives maximum power with the existing parts. He also tightened the governor springs two clicks, which allows the engine to rev just a little bit higher without doing any harm.

The result is -- to coin a phrase (not) -- that Millicent "came alive". No more struggling to maintain 55 MPH in rolling terrain. And climbed the Grapevine Grade at 40 MPH.

Since some of you must ask.... I took a run at top speed on level ground, and called it good with 66 MPH at around 2600 RPMs.

Exhaust temperature climbed above the recommended 900 F max (post turbo) a couple of times, but nothing blew up even when I touched 1000. Easy enough to keep it below 900 though. Now that I have the tach, I can downshift manually around 40 MPH or even higher, and hit 3rd gear at "healthy" yet safe revs.

Photos when I finish the "cosmetic" part of the gauge installation.
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Old 07-03-2010, 08:40 AM   #572
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Re: The Millicent Chronicles; two foot roof raise, big tailgate


So far as I know, this type of "fuel plate" is unique to the Bosch P7100 injection pump. I believe this pump is used on at least a couple of makes of engines, but far from all.

On the Cummins 5.9 engine, like mine, I believe this pump first appeared in buses in 1992, and in Dodge pickups in 1994.

The man to tell you is Nevrenufhp, who is on this board and also has his own web site with tons of this information.
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Old 07-03-2010, 06:24 PM   #573
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Re: The Millicent Chronicles; two foot roof raise, big tailgate

Quote:
Originally Posted by newtoskool
Is the fuel plate something common on all the engines or just certain makes?
Tell us what cha got(engine make and year), and we can tell you what pump it likely has on it.
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Old 07-08-2010, 11:34 PM   #574
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Re: The Millicent Chronicles; two foot roof raise, big tailgate


Oh, by the way.... I fixed the fuel gauge. It had nothing to do with having run out of fuel last November. It was simply that the float on the sending unit had cracked and sunk. That is, it had fuel inside it. Commercial Speedometer in Sacramento sold me a new float. End of problem.

Other news.... I just drove 1200 miles with no trailer and a light load, and I kept it below 55. Yet the fuel milage was below 10. I suspect the four "hoops" I installed on the roof. Added up, it's like I'm pushing a six inch wide plank thru the air -- or as if I had raised the roof six more inches. I think I'll make them removable before the next trip.

[Now... somebody is going to say "That's because you turned up the power.". But I don't think so. You burn more fuel only when you USE the extra available power. Most of the trip was flat, and I drove those long stretches slower than usual. So I think it is something else. I do need a new air filter.]
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Old 07-26-2010, 08:26 PM   #575
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Re: The Millicent Chronicles; two foot roof raise, big tailgate


Racked up another 1200 or more miles with a trip to Oregon. Sure runs better after the injection pump modifications, but having to back off the power when the pyrometer reaches 900 F is a nuisance. The guy I talked to at Isspro Gauges some time back felt that 1050 would be safe, but I'd hate to discover he was wrong.

On the other hand, having a tach is a godsend on downgrades. I now know when I can safely downshift manually to 3rd, and then I use the trucker's stab breaking method: let it roll up to 2.600 RPMs, brake firmly down to 2.200, let it roll to 2.600, repeat. This is what the air brake manufacturers teach these days, and my experience with 18-wheelers bears it out. No brake smoke on Ashland Grade this trip! Before I installed the tach, I was worried about over-reving and used the foot brake too much.

But... we just barely made it home without a roadside breakdown! The last few times we started her, there was a loud squealing noise like a slipping fan belt. And that may have been the noise, but the cause turned out to be more serious, and could have stranded us on the side of the road.
Turns out, Millicent uses a common "standard duty" General Motors CS-130 alternator, and these are notoriously prone to rear bearing failure. So... the next morning I opened the dog house and inspected the fan belt -- and watched the alternator rear bearing balls all roll out and onto the ground. For the grand finale, the outer race fell out also. It was a lot like a Roadrunner cartoon -- with Wyle E. Coyote watching his clever invention disintegrate in his lap.

So if you have the CS-130 you might want to replace yours with a fresh one now. Tons of info on the interweb -- just google CS-130 alternator. The CS-144 is much better and may fit.

Having now replaced the alternator, I stand by my judgement that a front-engine flat-nose bus should be at the very bottom of your shopping list. No room to work in there. If Millicent should somehow evaporate, I would replace her with a shorter pusher and a longer trailer.

Other than that, Millicent is serving us very well. Burning Man next.

EDIT: Add photos from the Kinetic Sculpture Race in Corvallis Oregon a week ago.





I'm in the left front seat.
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Old 07-26-2010, 08:46 PM   #576
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Re: The Millicent Chronicles; two foot roof raise, big tailgate

Waiting for the "new" paint job pics....... I'm dying of curiosity provided the computer.... doesn't give me any grief....
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Old 07-26-2010, 08:47 PM   #577
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Re: The Millicent Chronicles; two foot roof raise, big tailgate

That's right where I grew up, just about a mile from the Willamette River up by Albany. At least you didnt have a true breakdown and need a tow truck.
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Old 07-26-2010, 08:58 PM   #578
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Re: The Millicent Chronicles; two foot roof raise, big tailgate


We are still planning paint in connection with Burning Man, yes.

I'd move to Corvallis in a heartbeat if I could afford it. Towards Philomath -- out of the flood plain. I already have more wonderful friends up there than I have here!
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Old 07-26-2010, 09:03 PM   #579
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Re: The Millicent Chronicles; two foot roof raise, big tailgate

I still do. I'm heading up there on Friday for 10 days.
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Old 07-26-2010, 10:42 PM   #580
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Re: The Millicent Chronicles; two foot roof raise, big tailgate

awesome pictures!
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