new p-pump questions

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seeker1056

gear head
Joined
Aug 3, 2006
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Hi all
read all of the stickied stuff on p-pumps, and couldnt find the info i am looking for

I have read on various forums so many different takes on which is the best base pump to start out with, the 160, 180, 215 or the dirivitives from buses transports etc

Answers varied with no real answers as usual

So my question is:

What does it take to make a good race pump and what parts need to be installed to make say 450, 500, 550, 600+ cc's from any given pump

For example i hear that the 180 pump has the best plungers and barrels, the 215 might have the better cam, and the jury is still out on delivery valves from what I read.

Does anyone have a "recipe" for a good all around 12mm pump, that is good for say 750-800 or so hp, and 4500-5000 rpm and still have a good idle, and decent longevity?

Thanx
Ken
 
I think my first question would be how many 12mm pumps are making 750-800hp, I know of 1 @ 794 Im sure there is others but have never heard.
 
interesting statement - everywhere i read on these forums 450 cc's is capable of 700 -800 hp and on the dyno page there are a lot of claimers to that hp level on a 12mm p-pump

Almost 80 views and not a single thought on a pump build????

is this top secret gotta kill ya if I tell ya stuff or what?
 
There is more to it than just bolt these parts into a pump, but....

180 pump
CDS 5ks
191s
Afc tuned for your turbo of choice.
Benched if you want ~$500 and up

Longevity? Pushing a pump to its max is always going to shorten the life.
Injectors are another big key to your idle characteristics and hp.
 
Ken- My personal experiance has been on the 12mm pumps is that if you are not tearing it down and just adding "bolt-on" parts such as GSK,Fuel Plate,DV's,Rack Plug,and a few other little secret things you are best to start with a 215 pump. Not sure if you are on the TDR but you may just find more information over there if you want to look as you can search back 10 years and if you are lucky like I was you will find the odd post where someone let a secret slip!

If you are at all thinking of having a shop build you a pump, start with a 160 pump and have the cam cut, go with a set of 13mm P&B's and have the shop work there magic if you can find someone to do it (I only know of one shop like this in Ontario and they where also the only ones I could find at the time with a 100hp test stand)

Also, like stated above injectors have a huge role in idle as well as line size and also...its always better to start out with a larger pump and tone it down to the CC's you need then max it right out to get the #'s you want. My old pump put out 875cc's and we tuned it down to 600cc's and it worked like a charm! Just remember...LUBE, LUBE, LUBE!!!!!!!

RyanB
 
Thanx Ryan - I am curious as to why the 160 pump as i heard they are maxed at 500 cc's

I have access to more than a few different stock pumps should i decide to "build" a pump so knowing which to start with is a good thing

what shop might that be

I wil be running a set of 5x18 dual feeds with the edge filters removed
 
seeker1056 said:
Thanx Ryan - I am curious as to why the 160 pump as i heard they are maxed at 500 cc's

I have access to more than a few different stock pumps should i decide to "build" a pump so knowing which to start with is a good thing

what shop might that be

I wil be running a set of 5x18 dual feeds with the edge filters removed
Click to expand...

reasoning most are going with a 160 I believe for a fully built pump is mainly the cost of the initial pump and also that there is more room for cutting a better profile on the cam!
 
Timebomb said:
I think my first question would be how many 12mm pumps are making 750-800hp, I know of 1 @ 794 Im sure there is others but have never heard.
Click to expand...

5150RAM has a 12mm pump on his I think he had done very high 900 hp fuel only, and well over 1k with nos

I think My truck maybe in the 800 range fuel only with a non benchend 215.

red dodge2 said:
whats are the better dv's?
Click to expand...

If its for your p pump 24v start with 181s then 191s or 024s. I like the 024s better than 191s
 
TMONEYDIESEL said:
go with a better DV than 191's
Click to expand...

Constant pressure delivery valves :rockwoot:

Constant_pressure_delivery_valve1.gif
 
Last edited:
recently i read somewhere that 13mm plungers n barrels are a kit one can buy

If this is true what does one have to do to install - is it a bolt on or is machining required
 
seeker1056 said:
recently i read somewhere that 13mm plungers n barrels are a kit one can buy

If this is true what does one have to do to install - is it a bolt on or is machining required
Click to expand...

I'm curious as to who is selling a kit with Bosch 13mm barrels and plungers. My guess is that they are asian junk, because anyone smart enough to use Bosch parts would be smart enough not to sell them to someone who doesn't have use of a test stand.

To answer your question, they are a "bolt on"...however it requires some special tools to disassemble and reassemble the p7100's. No machining is required though.
 
I have access to a very big European made P-pump test stand, and to the tools, but what I dont have yet is the right knowledge. The guy who owns the stand and tools will do whatever i ask of him, but he is more a rebuilder, and a serious VE pump guy, not a real big, P7100 performance guy

Got a part number for the Bosch pieces?

So I could take a 160 or 180 pump and order a cam from Colt, buy the bosch 13mm barrels/plungers, slip in a #8 or #10 or zero plate, a 5gsk, a rack plug, and say a set of 191 dvs and have it benched and I would be good to go?

What have I missed?
 
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