Injection pump testing

How to make it go fast

Moderators: Greenleaf, KTA, BC847, Richie O

Re: Injection pump testing

Postby ahale2772 » Mon Feb 21, 2011 6:08 am

yikes I searched long and hard and found 2 threads, some good stuff when you look back at older posts... ;)

viewtopic.php?f=4&t=284&start=0

viewtopic.php?f=4&t=1505&start=90
84 CCLB W350 project
94' W350 Dually, Diesel, Auto 1080HP/1980FTlbs
User avatar
ahale2772
14mm rotor
 
Posts: 2353
Joined: Tue Jul 21, 2009 9:43 am
Location: massachusetts

Re: Injection pump testing

Postby KTA » Mon Feb 21, 2011 8:37 am

Case pressure typicaly runs from 60psi to 150psi on most of the pumps I have tested depending on inlet pressure, fuel settings and rpms. I have no way to measure what the injection pressures peak at in the injection lines. The time it occurs in is far to short to be measured with a mechanical gauge at rpms. It of course will also vary with fuel rate and rpms, so the numbers wouldn't mean much.
Fleet of Junk: 1989 D350 627rwhp 1300 tq B-1/Hx60 twins, KTA pump/injectors, ported head, BIG fuel supply. 13.75@ 109.5mph 1/4: 1992 W350 Cab-chasis, 1993 W350 ext cab cust.370 inj Hx40/16cm 290rwhp hydroboost brakes,1984 D350 crew-cab another project.
User avatar
KTA
diesel guru/mod
 
Posts: 1855
Joined: Thu Jan 04, 2007 2:23 pm
Location: Shelby County, Ky

Re: Injection pump testing

Postby ahale2772 » Mon Feb 21, 2011 8:43 am

KTA, Do you do any thing special with the ksb when you test? Energized? Or no?
84 CCLB W350 project
94' W350 Dually, Diesel, Auto 1080HP/1980FTlbs
User avatar
ahale2772
14mm rotor
 
Posts: 2353
Joined: Tue Jul 21, 2009 9:43 am
Location: massachusetts
Top

Re: Injection pump testing

Postby Halfagagga » Mon Feb 21, 2011 8:58 am

I found one of the threads through a google search as well this morning. Hadn't been touched since 2007...



KTA, with 150psi+ what kind of pump do you run to supply the rotor and head? I had PM'd you about the belt driven variety, but it didn't seem like that's what you had done. I have only found 2 others that are capable of running 160+.
Halfagagga
fuel pin?
 
Posts: 9
Joined: Fri Feb 11, 2011 4:25 pm
Top

Re: Injection pump testing

Postby dragrdan » Mon Feb 21, 2011 6:40 pm

A couple of questions.

On the 12mm pump tests, when the fuel output starts dropping off, is case pressure dropping off with it, or ????

What size line are you feeding the pumps with on your stand?
93 W250 5spd, Comp 275, HE351CW, 5X18, IP turned up, 3200 spring, BHAF.
dragrdan
fuel screw!!!!
 
Posts: 104
Joined: Thu Oct 02, 2008 6:08 pm
Location: Canton, Ohio
Top

Re: Injection pump testing

Postby dragrdan » Wed Feb 23, 2011 8:11 pm

The RPM's you have listed, are they stand or engine?
93 W250 5spd, Comp 275, HE351CW, 5X18, IP turned up, 3200 spring, BHAF.
dragrdan
fuel screw!!!!
 
Posts: 104
Joined: Thu Oct 02, 2008 6:08 pm
Location: Canton, Ohio
Top

Re: Injection pump testing

Postby dunes450r » Wed Feb 23, 2011 8:56 pm

dragrdan wrote:The RPM's you have listed, are they stand or engine?

i'd say they have to be engine......
1990 W250 getrag, 3.07's, 60k on full rebuild, DAP 5x14's, 12cm WG, 366 spring, 2nd gen IC not hooked up yet
dunes450r
fuel screw!!!!
 
Posts: 318
Joined: Tue Nov 23, 2010 12:40 pm
Top

Re: Injection pump testing

Postby KTA » Thu Feb 24, 2011 7:50 am

The RPM's listed are engine and the fuel line is 0.500 inches.
Fleet of Junk: 1989 D350 627rwhp 1300 tq B-1/Hx60 twins, KTA pump/injectors, ported head, BIG fuel supply. 13.75@ 109.5mph 1/4: 1992 W350 Cab-chasis, 1993 W350 ext cab cust.370 inj Hx40/16cm 290rwhp hydroboost brakes,1984 D350 crew-cab another project.
User avatar
KTA
diesel guru/mod
 
Posts: 1855
Joined: Thu Jan 04, 2007 2:23 pm
Location: Shelby County, Ky
Top

Re: Injection pump testing

Postby dragrdan » Sat Feb 26, 2011 2:07 pm

KTA,
Did you watch case pressure on any of the 12mm pumps you ran? It seemed like at about 2200rpm was where the fuel started dropping off. If case pressure remained constant around there and higher, then it would be an issue of fill time for the head. If not then an inlet and vane pump issue.

PToombs wrote:Would it benefit to run a larger cam plate with the 12mm plunger and head? I've been wondering about this for a month or so and keep forgetting to ask. :oops:


I tried this, and wasn't happy. But doing the math, and the revelations here may reveal why. 12mm H&R, and 2.8 mm camplate (stock setup) gives a volume of 316.7 per stroke. 14mm H&R and 2.8mm camplate gives a volume of 431.1 per stroke. 12mm H&R and 4mm camplate gives a volume of 452.4 per stroke. 14mm and 4mm gives a volume of 615.8 per stroke. If KTA is seeing that case pressure is dropping off with the 14mm/2.8 combo, it would just be that much worse with any higher volume combos.
93 W250 5spd, Comp 275, HE351CW, 5X18, IP turned up, 3200 spring, BHAF.
dragrdan
fuel screw!!!!
 
Posts: 104
Joined: Thu Oct 02, 2008 6:08 pm
Location: Canton, Ohio
Top

Re: Injection pump testing

Postby Halfagagga » Sat Feb 26, 2011 5:54 pm

The trick would be trying the larger cam plate and head with the 2000psi pump and then look for a pressure loss..
Halfagagga
fuel pin?
 
Posts: 9
Joined: Fri Feb 11, 2011 4:25 pm
Top

Re: Injection pump testing

Postby PToombs » Sat Feb 26, 2011 6:49 pm

Dragrdan, thanks! I didn't think I was going to get an answer to that.
pete

Just enough power to break everything behind the crankshaft.
User avatar
PToombs
14mm rotor
 
Posts: 11367
Joined: Sun Jan 07, 2007 6:13 pm
Location: Syracuse NY. Snow central!
Top

Re: Injection pump testing

Postby dragrdan » Sun Feb 27, 2011 4:12 pm

When the output of a pump is rated, is it over a certain amount of time, or so many revolutions, or....?
93 W250 5spd, Comp 275, HE351CW, 5X18, IP turned up, 3200 spring, BHAF.
dragrdan
fuel screw!!!!
 
Posts: 104
Joined: Thu Oct 02, 2008 6:08 pm
Location: Canton, Ohio
Top

Re: Injection pump testing

Postby dragrdan » Sun Feb 27, 2011 4:18 pm

KTA wrote:Yes I plan to make a special Tee banjo fitting so that I can monitor case pressure before the orificed return banjo. My other option is to make a fitting to get the pressure out of the fuel shut off solenoid port since I gut them to run anyway so I don't need a 12V power supply. I am conceraned that if I put it there though I will get a lot of pressure fluctuation form the plunger. decisions, decisions.......... Tractor pulling next weekend at Gordyville so that will probably put any more testing off for a couple of weeks as other stuff has now come up to do.


The shut off solenoid seems easiest, just knock the plastic off, drill and tap the id to take your gauge. As far as fluctuation, there is nothing to buffer it between the return port and shut off solenoid port, so you should see the same psi and fluctuations either port.
93 W250 5spd, Comp 275, HE351CW, 5X18, IP turned up, 3200 spring, BHAF.
dragrdan
fuel screw!!!!
 
Posts: 104
Joined: Thu Oct 02, 2008 6:08 pm
Location: Canton, Ohio
Top

Re: Injection pump testing

Postby Halfagagga » Sun Feb 27, 2011 4:19 pm

You talking electric or belt driven? Both are different. Electric is at max amps. Belt is rpm based.
Halfagagga
fuel pin?
 
Posts: 9
Joined: Fri Feb 11, 2011 4:25 pm
Top

Re: Injection pump testing

Postby dragrdan » Sun Feb 27, 2011 4:27 pm

Injection pumps. For instance in an earlier post KTA said that a pump was putting out 300cc's. Is that over a certain amount of time, a certain number of revolutions, a certain number of pump strokes?
93 W250 5spd, Comp 275, HE351CW, 5X18, IP turned up, 3200 spring, BHAF.
dragrdan
fuel screw!!!!
 
Posts: 104
Joined: Thu Oct 02, 2008 6:08 pm
Location: Canton, Ohio
Top

PreviousNext

Return to The good stuff

Who is online

Users browsing this forum: No registered users and 20 guests