Engine/Transmission (1994 - 1998) P7100 flow rates?

[bubba_PA]

Does anyone know stock flow rates for a 180 HP P7100 pump? I've seen different units for measuring also, such as cc per plunger/barrel and then total cc's. Either would be helpful. As a second part does anyone have any ideas of what HP ratings roughly equate to what flow rates. I know that there are other variables such as fuel/air mix, exhaust flow, etc. but I'm trying to gain some basic numbers and knowledge. Any help appreciated.



Paul

 

[mjoppie]

well i dont know hp/flow rates but i would assume there would be a lot of varaibles with it but it would be nice to have some basic numbers. i know jim fulmers pump flows 800cc of fuel and can make 804hp w/water/meth, but hes the only person thats told me what ther pump flows, i also would like to have some ranges because the injection shop doing my pump says theres no way i can burn anything over 300cc and im trying to get them to set it up to flow 550+. theres got to be some pump gurus on here that could help

 

[Cooker]

Here are a couple of Fulmers numbers to chew on. If I am a little off I'm sure he will correct me.



In valvet, something like 350cc's of fuel, he can make 500 and some HP. In full power, something like 750cc's of fuel, he make 750HP on straight #2. So twice the fuel is no where near twice the power.

 

[mjoppie]

so if a person was to have 500-550cc of fuel with twins what could be a realistic hp number to shoot for maybe 600 hp or would that be off base? whats involved in getting 500cc of fuel out of a pump, i ask this because the shop is kinda hesitant about doing it and thinks it would be a waste of fuel. he said my stock pump comes with 12mm barrels and 13mm like in the stupid pump wouldnt increase it that much, is there a special cam that i should have him put in it?

 

[bubba_PA]

Mjoppie:



Check your PM's. There are other adjustments that can be made to the P7100 but need to be done on a test stand. Control rack travel and fine tuning of plunger/barrels seems to be the keys as well as a balance of the fuel plate and governor arm. Do a search on P7100 and look back a couple of years and there is alot to sift through. If your tech doesn't think 13 mm barrels vs 12's won't flow that much more then why does Piers use them. Remember also it's not just the size of the p/b but also shape of helix and relationship of the spill/fill port's, and delivery valves too. Add on top of that more rack travel and you can see how some of these pumps push that much fuel.



Paul

 

[CATCRACKER]

on a 180hp pump i want to get to about 500-550hp on #2 only how can i get the 350-400cc of fuel out of this pump?

 

[RonA]

My pump max's out at 325cc and I can do what you are looking for. Probably 325cc would be a minimum. That is a stock 913 with fuel plate and spring kit only. You will have better luck calling PDR, or Enterprise, or Scheids, or any of the good performance diesel shops. Pick one, and do what they tell you. Just my worthless opinion.

 

[mjoppie]

ron, you get 325cc out of a stock pump! no dvs, what # plate, what do you think a 911 pump is capable of flowing without internal work?

 

[bubba_PA]

Ron:



May I ask how you had that measured? And is it 325 cc per pump revolution or what units? cc per ??? Thanks for help with starting numbers.



Paul

 

[RonA]

When i got my pump I was told it was 325cc. I was recently told that it was a stock 913 with a 3k gsk and a fuel plate. That is all I know. PDR sold me this pump. Any of the big name performance shops should be able to answer you're questions off the top of their head. They will give you numbers and facts, and that is what you need.

Ron

I believe they are measured by cc's per thousand cycles. Please don't quote me on that. I know very little about all of this.