Injection pump testing

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Re: Injection pump testing

Postby KTA » Wed Feb 09, 2011 4:09 pm

Well I guess I need to run a 12mm again with a governor spring so you have something to compare to first! Oops. lol
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.
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Re: Injection pump testing

Postby ahale2772 » Fri Feb 18, 2011 10:43 am

hey KTA, is there any way you can test a pump (say a 12mm) fist with a stock pin at max travel, then a ground stock and then a Denny T pin? it would be nice to finally get some clarification on if the pin give any more CC's at its deapest point. I would be willing to mail you my denny T 2 pin if your willing to test.

I know many including you have claimed that the pin wont travel further than a stock pin can be ground and that the afc can possibly leak BUT...numbers would be nice :grin:
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Re: Injection pump testing

Postby KTA » Fri Feb 18, 2011 12:38 pm

What position would you like the stock pin tested in? Yeah I can do it at some point but not in the next couple of weeks.
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.
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Re: Injection pump testing

Postby ahale2772 » Fri Feb 18, 2011 1:40 pm

Deapest pin on all three pins would be revealing, have you been diabling the afc when you test the pumps?
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Re: Injection pump testing

Postby KTA » Fri Feb 18, 2011 4:16 pm

I use a ground stock pin that allows full travel and then take the afc spring out so it is at max fuel all the time.
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.
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Re: Injection pump testing

Postby ahale2772 » Fri Feb 18, 2011 6:18 pm

Well then I suppose smartest idea would be to test the denny t that way too
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Re: Injection pump testing

Postby Tacoclaw » Sat Feb 19, 2011 5:22 pm

Just wondering, but when you have no cone in the bore and you hit the throttle pushing it out, does that simulate the maximum pin travel?

If so, it doesn't really look like it goes much more than halfway across the bore.
Last edited by Tacoclaw on Sun Feb 20, 2011 1:39 pm, edited 1 time in total.
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Re: Injection pump testing

Postby huntinguy » Sat Feb 19, 2011 7:17 pm

Tacoclaw wrote:Just wondering, but when you have no cone in the bore and you hit the throttle, pushing it out does that simulate the maximum pin travel?

If so, it doesn't really look like it goes much more than halfway across the bore.


Yes. you are right.
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Re: Injection pump testing

Postby KTA » Sat Feb 19, 2011 7:37 pm

Yep a little over half is all it goes. I don't really need to test a denny t VS a ground stock because I know it can't travel anymore the arm in the pump is bottomed out internal with a ground deep stock, no pin at all, or a dennyT/old Smokey type pin. If I still had a stock non ground pin I could compare it to a max travel style pin like a ground one or a denny T. Then you need to consider do you want it compared at max settings, or like stock with the platic travel limit collar around the cone? You can easily adjust a 100cc+ or - out of the pump by changing the afc position.
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.
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Re: Injection pump testing

Postby Halfagagga » Sun Feb 20, 2011 1:39 pm

Can you confirm the pressures created by each fuel moving device inside the pump?
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Re: Injection pump testing

Postby KTA » Sun Feb 20, 2011 3:44 pm

Halfagagga wrote:Can you confirm the pressures created by each fuel moving device inside the pump?


I don't understand what you are asking????
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.
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Re: Injection pump testing

Postby dazedandconfused » Sun Feb 20, 2011 3:50 pm

You have anyideas on how to dual feed the pump you would mind sharing?
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Re: Injection pump testing

Postby ahale2772 » Sun Feb 20, 2011 6:27 pm

dazedandconfused, I KNOW there was a thred where KTA described how he did his, i just looked for a while and cant find it it was one of cumminskings threads. If im not mistaken the simplified explanation is using a check ball type t fitting on the return of the pump that will use another lift pump to account for the loss of case pressure when under load
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Re: Injection pump testing

Postby Halfagagga » Mon Feb 21, 2011 5:33 am

KTA wrote:I don't understand what you are asking????



As you know, I'm trying to figure out the differences and similarities between the 4BT VE and the 6BT VE. I was just wondering if you could confirm that the pressures that are seen inside the pump start around 100-200 psi and work upwards to 20,000 at the head.
Last edited by Halfagagga on Mon Feb 21, 2011 5:41 am, edited 1 time in total.
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Re: Injection pump testing

Postby Halfagagga » Mon Feb 21, 2011 5:40 am

dazedandconfused wrote:You have anyideas on how to dual feed the pump you would mind sharing?


I am also very interested in reading/learning more about this.
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