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Free Power From The VE Pump

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Several months ago I discussed with Old Smokey, some mods that I had done to several VE pumps, including my own. With no apparent ill effects. I never posted it here in public, because it closely resembled the effect that his fuel pins have. However, it has distinct advantages. One of which is no fuel leaks, also you can gain more travel overall, because of the pivot point of the vertical lever that the fuel pin rides on.

Several people have tried this mod and some are able to post on this forum. Since I originated this mod, I give permission to any who have used it, to pass it on. Many people install the 366 govenor spring for $12~$13, and when you do this it is also the ideal time to do this mod, since you need to have the top off of your pump to do it. Turning the top of your pump upside down and looking at it, you'll see a black lever, that teeter-totters vertically with a foot extending to the rear of the housing. It is this foot that we remove. Approximately 1/8 to 3/16 of an inch of metal. I just eyeball a straight line down the back edge of that lever, and grind the foot off. I tried to bend one and it broke off, oops~very brittle,yet hard. Grind it very smooth, because it is in contact with the fueling assembly, that your govenor spring and top hat are pulling forward, with 2 separate archs. So surfaces will have slight friction and wear over time. I also take the time, while the housing is off, to increase the travel both directions in your idle and high engine rpm. I remove both screws and grind the outside of the housing until the lever inside, touches the front of the housing. You could get more, but I have found it to be sufficient. These are the only mods that I want to reveal at this time. The others I have been sworn to secrecy. This will net about 7lbs. of boost. Some of the other guys can post what they have dyno'd with other injection and turbo combinations. I can say that I get 19. 5 to 20. 5 miles to the gallon and with my setup. This mod makes more heat, more smoke, and more POWER. If this is what you desire, then this is a good mod for you. I hope that you all enjoy it as much as I do, and I wish you all happy BOMB~ing. :D
 
Does this mod provide more smoke and power than old smokies pin? I was thinking about installing the pin but was not aware that it could cause fuel leaks. What exactly causes the fuel leaks with the installation of the fuel pin?
 
I also have PDR pin, no leaks yet.



RoadHawg, thanks for the tipOo. Has anyone done both your mod and kept the modified pin in? Any results? 7-8psi for 12$:D



Now if it would quit snowing and warm up, I could get the performance parts on the truck:{



Pat
 
Is the pdr pin the same pin that old smokie made? Anyone have any information why the pin can cause fuel leaks?
 
Eric and I chatted about this recently. He did say it would be ok to let this one out.

I have been using a modified pin (my own) with this top modification and have seen a fair bit more power, smoke, heat etc.

Once you make this mod you will have what is basically a "semi-permanent" modification. The only way to "undo" it is to have the lever replaced. But, hey, why would you go backwards right :D:D



Just keep in mind that it does result in more smoke, including at idle... .

You are also going to eventually need more "air" to deal with the extra fueling too... . trust me... ;)



Pastor Bob. .



edit: no matter who's/what fuel pin you use, the normal cause of the fuel leak is due to the guide pin extending futher into the AFC housing and that results in a poorer seal between the O-Ring and the guide pin shaft. There is a limit to how far that pin can protrude before the possibility of leakage occurs.

Remember the supply side of the VE that guide pin is exposed to between 50-100 psi pressure so if the O-Ring is old/weak/worn etc, the fuel pressure will push fuel past it into the AFC bore.
 
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Hey hawg, I have the pods and turned up the pump as per this site,straight ehaust with mandral bent around the transfer case, will this mod give me more power? I don't need more smoke, it's all I can do to control the smoke now. Got 27lbs of boost with the 16 housing. Runs good, I think, but have to watch the egts towing in the hills. Thanks Tim
 
Let me see how to say this, the fuel pins will exaggerate the effect of this modification. I think that is a good thing.



The reason that we see 7lbs of boost is because the excessive exhaust temperatures spool the turbos rpms into the stratosphere! :D

If anyone here is concerned about egts getting to high before you make this mod then I would suggest forgoing it until you can rub enough pennies together to take to piers and buy a PDRhx40, or better yet a B1 turbo!



Often I have read on this forum members lamenting that the VE trucks can't be made to run with the p-pumped trucks! The margin has been narrowed allot :p



Please forgive my earlier comments about fuel leaks, I was referring to R&D prototype testing and not about any vendors finished product
 
Old Topic

I have a dyno day coming up and was wondering how many people have tried this mod? If I were to gain 7 lbs of boost, does that mean I'll have about 70 more hp?



I need more power! :D



Kurt
 
Yeah Scott, did you do this to my pump? Ya know I wasn't listening when you told me what you did to it... Also I forgot the receipts and list of mods done as well at your office... On edit: Kurt, you already have the gov spring don't ya?? If not, oh mama, you're missing out Oo. .
 
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Hey Eric,



I'll back you up, and say that this modification does add power. I didn't dyno before and after, so I don't know how much power it made. Smoke was greatly increased because of additional overall fuel, and the fact that this mod actually allows the AFC to increase the amount of fuel available at any given boost number, and under no boost conditions.



On the fuel pin subject - I wasn't aware that the old smoky or PDR fuel pins caused leakage. I have sold and installed about 100 of mine with no problems/complaints, and have been using one for 2 years myself. If the guide pin's O-ring is worn, it can leak. But, that is a worn part, not the fault of the fuel pin. If the pin is designed to allow for too much guide pin travel it is possible to have a leak because it is shaped like a boat tail bullet. Too much travel will allow the "boat tail" to pass by the O-ring and compromise sealing. Also, this mod does not reduce, or increase, the effects of installing a modified fuel pin. On a stock rig my power pin makes 40hp, on a rig with the modified lever it also makes 40hp. I've done literally hundreds of dyno runs. I am unsure of what the PDR pin looks like, but I would assume that it is different from mine.



Anyway, this is a good mod if you wont more power and dont mind smoke. Thanks Eric.



Mike
 
Like I said, this was brought to my attention a year ago almost to the day. I was just digging throught the archives looking for a little more power.



bgilbert; No spring yet. It's been in my tool box for over a year now waiting to be installed, but I can turn 3500 rpm right now. :D I've rebuilt an engine before and thought that was easy but I'm afraid I'll mess up my perfectly running truck by doing this mod.



Kurt
 
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Although I have not ran a PDR pin, I have had Old Smokey's pin for a year or so and truly love it. I like the tune-ability and throttle responce in all driving conditions. Plus the fuel milage stayed the same. I have no internal leaks.

When I was allowed to test this pin, Mike let me use it for a week. Let me tell you that when I pulled it and put the stocker back in, I thought my brakes were stuck on. What a difference.

Basically I am very pleased and will never go back to a stock pin. Sure like most of you I want more power, but that will wait for a good converter.
 
Kurt, just because you can turn 3500 don't mean you're fueling as good as you could with the spring. I could turn that too, but it would stop pulling hard-fueling at around 2600 give or take, after the spring, oh mama, we're talking fueling up and past 3500. You and your truck will appreciate the spring. Ok picture this: my original 'maxed out' VE turned wide open, starwheel gone, fuel almost as far as it could go before running away, high idle wide open, custom ground eccentric cone, couldn't hold a prayer to the bombed modified VE that Scott built for me, with a gov spring and I think this mod, with starwheel at the top, oem eccentric cone, high idle wide open, fuel screw not even touched yet. I haven't even played with any of the free mods or fuel yet. Trust me this mod and a gov spring will make a big difference.
 
bgilbert; I agree It's not fueling nearly as high as it revs. Right now it defuels at 105 mph so thats about what... . 3000-3100rpm. One of these days... ... .

So how many pounds of boost are you getting now?



Kurt
 
Bout 40 psi, 1500*, 6psi of fuel pressure. This is with factory pump settings, besides the high idle on the pump. A modified pump multiplies all the adjustments more, so I'm told or something like that. . Boost isn't everything now, but wait til I put in the custom cone and tinker some more with the fueling and other adjustments of the pump... . C'mon now, you've rebuilt an engine, this is easy, just read through all Bob's instructions, take your time, can't be as hard as rebuilding a motor.
 
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