Engine/Transmission (1994 - 1998) Delivery Valves - RFI

[britannic]

Could someone clarify this for me please:



The delivery valve is in two parts:



#ad




And the DV valve holder is the large barrel with the inj. line screwed to it:



#ad




If I order . 191 DVs, will I get the 2 piece valve with the 4 sided star plunger in it, or a DV holder barrel with a larger bore size - or what?

 

[britannic]

I think I've answered my own question:



I pulled the barrel off of my own pump and found the lower valve in the first picture. Then I pulled the spring and spring holder out of the DV holder barrel (see 2nd pic. ) and saw about halfway down its bore a small hole approximating the . 131" (my barrels are 1238s) that I've read about.



So, if I buy . 191s, I'll presumably get new barrels, with a . 191" hole?



If the only difference is that metering hole, then I'm thinking about boring it out to . 191" on my lathe - or am I being overly ambitious and penny pinching .

 

[HoleshotHolset]

Hold on! If you order a new set of DV's - you're only going to get what's pictured in 'Figure 17'... . and if you're getting brand new 'non cut' DV's... they'll be covered in a waxy substance to keep 'em nice and fresh.



Take a look at the smaller of two parts in 'Figure 17'. See the part that seats on the bigger part? Now look right below that seat on the small part.



THAT's where you're getting the extra fuel from. That little collar is what allows the fuel to pass through (for lack of a better term... ) the delivery valve 'needle and seat'. If the collar is smaller (or non-existant... in the case of 'cut' DV's... )... you'll get more fuel out to the injectors with every slug.



Sooner or later - a vendor is going to hire me so that I have to stop giving out all this 'free advice'. :-laf



Matt

 

[britannic]

Thanks HoleshotHolset; so what does the . 191 refer to - the diameter or thickness of the collar?

 

[HoleshotHolset]

Short answer - I don't know.

Long answer - I don't know.



I think it's more of a part number than anything else. I have a set of 022's that outflow 191's. Go figure.



The normal 131/181/191 numbers do coorespond to increasing rates of fuel flow, however... .



Matt

 

[CurtisvilleCummins]

do you have the part #for those 022 DV. Thanks

 

[HoleshotHolset]

No, I don't have a part # for them.



Call PDR - that's where I got mine.



604-888-4159



Matt