Big Red Pile 91 W350 Build Thread

[CumminsPower59]

Gonna pull it back off tomorrow and go back through it. Took tomorrow off so I can get this thing in good enough shape for the trip on Friday...

[RCCUMMINS89]

So.....what happened at sop this weekend?

Pull the pump? Tear it apart? Who helped? I want details

[CumminsPower59]

Ok. Put the NOS pump back on for the trip out, but in my haste in swapping stuff around on pumps, I lost the top hat spring out of the old pump. I pulled the spring out of the new pump so it would run. Well, I swapped the new pump back on, forgetting to reinstall the spring...didn't run too well, but it ran. Made the trip ok, but had a hard time idling, so on Saturday, I tore apart the old pump, both Greenleaf and Bill Gilbert looked it over, and none of us could find anything major wrong, other than some wear inside the main pump body. Reassembled the old pump, put it back on the truck, ran ok up to 2000 rpms, then that miss came back. Said fack it, went to put the new pump back on, but before I did, I remembered to put the top hat spring back in. Took quite a bit of throttle indexing to get it to run, the line on the throttle shaft is centered with the lines on the throttle arm, notch down from the standard "two up/right, two down left" index. Gave it a bit of timing too, about 3/16"+. Runs out decent, hits 28 psi and 1000degrees, burns really clean, but still missing fuel. One thing Tim Worline, Pete Toombs and I discussed is that the power screw may be too short and not pushing on the fulcrum lever as much as it should. I am gonna get the caliper out and do some measuring, see what the difference is on the inside, how much the power screw protrudes from the inside of the pump top, to how much the fulcrum lever moves. That's where I am at now with The Pile. Still got a bunch of stuff to fix, need to make a transfer case shifter bracket, fix the no HVAC blower problem, no sound from the radio, and fix the horrible brakes...

[RCCUMMINS89]

So all is well........just not much fuel from the pump.

I would blindly agree with the power screw theory. Would answer the problem with needing to index it a notch off from "normal"

[CumminsPower59]

Pretty much. I might get to it tomorrow, depends if I can drag myself out of bed at a decent hour. Working 2nd shift isn't too bad, but just got to get up early enough to be a little productive before I have to go into work. Whats crazy is that in theory, this pump should've ran from the get-go without having to do anything to it. The power screw is completely maxed out, it shouldn't need that much just to run I dunno, I just want to see what these 370's will do with proper fueling...

[RCCUMMINS89]

Like them so far? Or too early to tell?

[CumminsPower59]

So far, I like them...

[CumminsPower59]

Pulled the pump top off, the fuel screw protrudes about .60" out of the top. It was not quite easy, but I measured about .70" of fulcrum movement. Tonight at work I will weld up a spare fuel screw that I got and swap it out, see if it makes any bit of difference. I did open up some core pumps I have, and one thing I did notice is that on the non-ic pumps, it takes a little bit more pressure to move the fulcrum lever. Don't know what that means, but I got several pumps now, and I will probably start going through them and see whats up.

[CumminsPower59]

Crap

I welded on a spare fuel screw I had, added 1/8" to it. Put it on the truck last night at work, idle came up a bit, so I thought all is good. Not so. I believe I have damaged some internals as now the truck has no power, it took all it had to drive home. Throttle feels very stiff, and it won't fuel very much at all. One of the original problems I had with this new pump (besides fueling) is that when I let the clutch out in second gear, the thing would almost die, but stay running with minimal power for a few seconds then start fueling, so I just took off in first all the time. Now, last night, it was all I could do to keep it alive while taking off in first gear.

Im just about frustrated with all these VE pumps, I got two core pumps that I got at S.O.P., I'm gonna start going through them and see if I can build one decent pump out of the two cores and my old pump. I am going to take the top off the new pump and check to make sure nothing is damaged, if not, it's off to my local pump shop to be benche tested...or something.

All this mess started with my OE NON-IC pump leaking at the head o-ring

[1STGENFARMBOY]

Ike.....this thing that has happened to you over the last month is the main reason I am (NOT) touching my engine ever again.

[RCCUMMINS89]

I'm being lazy and don't feel like reading back through............ What is a "nos" pump, and how did you acquire it?

[AHineman]

New Old Stock.

[cmann250]

I'll ask because I'd overlook something like this...

Does the OE pump and the NOS pump have the same P/N? The NOS pump could be functioning perfectly, but it's just not throwing the fuel the OE pump did??? I've heard of 184s and 205s both being referred to as "stock".

[CumminsPower59]

Caleb, the pump numbers are different. Not sure on original, but IC trucks got 184 and 205 pumps. I doubt its a coincidence, but BC847 has a NOS pump that isn't fueling as hard also.

[CumminsPower59]

Ok, more nonsense.

Built a pump out of the OE 114 pump and two I got from Bill at SOP. Put it on this morning, couldn't get the thing to lite off. Oh well. It was a shot. I took the head, rotor and springs out of the 114 pump and replaced it with a head, rotor and springs from that industrial pump, which appeared good. No dice. So I went ahead and popped the top off of the 205 pump, just to check out the fulcrum lever, seeing if I bent something when I put in that longer fuel screw. All is well. I ground down the welded up section until it was 0.10" longer than the OE screw. Put it all back together, slapped it on and it fired right up, nice snappy throttle, idles at 950rpm (can't get it to idle lower with present throttle lever index), runs out decent. STILL lacking fuel, although it did run alot better. I can get up to 30psi of boost, and now hit 1250degrees. It puffs a little bit of thicker gray haze at first, but is cleaned up by 1600 rpms, and runs clean as a whistle all the way up. This is just throwing ideas out, but since I am running 370's, which have a spray angle of 155, so they do match the pistons well, could this be why its running so clean? I've heard in the past that 370's can smoke a bit, but I always assumed that was because they were spraying into a 145 bowl...? I really want to see what BC847 comes up with on his pump, hopefully it is something I can also do to get more fuel. I will put the 114 pump back together and send it to my local pump shop, and see what they can come of it. Before the reseal, that old, leaky pump would push some fuel...

Anyways, enough for now, how about some pictures



On the right is the head and rotor I put on the 114 pump..didn't know if it would work or not so I tried it anyways...