VE Alterations

[sparks57]

I think what we have in the performance step thread is too vague on what can be done to the VE pump.



I would like to have some discussion over all the things that can be done to our old VE pumps to make them push more fuel, and at the RPM's we want it to be pushed at.



Such as:

Aftermarket fuel pins

Matching the washer for sufficient cone travel

Governer springs

etc...



So what else can be done?



One thing that I have heard come up on ocassion is delivery valves... what can be done in that area?

 

[Timebomb]

My buddies shop highly modified a VE. It was a very radical pump setup. And it was hard to keep seals in. High delivery pressure was also a must. I think that truck was somewere around 500h. p. @ wheels. Not sure the guys name but he is on TDR. Guess he dosnt brag much. I think i would go with a P-Pump, make more power and it would be much more reliable.

 

[sparks57]

Yeah, but I want to take the VE to the limit first... then if I need more I'll go to the p-pump...



And twins of course.

 

[Timebomb]

I understand..... Just me speaking personally if i were on a quest for big HP #'s i would convert to a P-pump thats all. I just wouldnt want to put all that time and $ into a VE for it to just blow apart when its maxed out a couple miles down the road. But as always evrything in this game takes $ and will give you problems no mater what it is.

 

[sparks57]

I will go to the p-pump if I am not happy with the VE. And believe it or not, it doesn't cost THAT much to soup up these pumps.



So anybody know what else can be done to these pumps besides fuel pins and governer springs?



And what can be done with the delivery valves?



Are we just all keeping secrets or what???

 

[Greenleaf]

Are we just all keeping secrets or what???

I dunno of any secrets... ... ... ... ... ... ... .







Greenleaf

 

[dpuckett]

One thing these pumps are low on is pressure- about 10Kpsi max. The P7100 maxes out at about 17000, or 70% more. I remember someone changing DVs, and noticed a little more smoke and EGT, and not much else. THink he was running PODs, and a PDR 35, but dont quote me on that- I've slept since then, and aint getting any younger, so the memory is slipping some. Cant remember everything like I used to.



I dont know if there are bigger DVs available for our VEs- there has to be some somewhere, though. I think the limiting factor is the realtively archaic design of it (basic design came out in the 70s), and the low power it was designed for. A cummins Manual from '90 said the CAV/Lucas (now Delphi?) inline pump was used for apps above 200hp.



As for the nylon washer, I have taken it out of the last 4 trucks I've had. The directions with the DD pins said to take it out, and I gained about 4-5psi by doing it. Someone mentioned that the tapered part can stick if you take the washer out, but to each his own. I personally have had no problems with it.



CB- you just got done giving nascar mark a truck load of crap about not having a true first gen, and now you're thinking of crossing over to the Dark Side? Hypocrite I thought it was your goal to be the first to get 500RWHP from a VE. I think it can be done, with the right injectors and airflow- extensive porting and polishing. But it was just 3 years ago we were saying the same thing (port and polish) about 300RWHP. I recall when I first joined, that a H1C-16, straight 3. 5" pipe, and PWs were IT- closing in on 275hpOo. WE've come a long way.



Daniel

 

[sparks57]

I just said the I would go to the p7100 if I felt I wasn't happy with the VE.



But it is my goal to stick with the ve.



And as for those washers, the point of keeping it in but sanding it down is so that pin doesn't ride all the way up the cone and then out again, because you will notice that the cone gets narrow then a little wider at the top. When we sanded down my washer, we sanded it down so the pin stopped at the narrowest part of the cone, and didn't ride any further up.



Did that make sense?



I have also heard of people doing some grinding to get more travel out of it the linkeage... but I need to do some more research.