VE pump track mods need

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VE pump track mods need

Postby 91bluecummins » Wed Jul 23, 2014 7:36 pm

I am building a 91 ic motor with studs,fresh rebuild and 5x.012 dfi injectors, he351ve and a k31 71mm twin setup,custom water meth setup puttin it in a 85 c10. ive got some vw delivery valve im gonna try and hot wire ksb any thing i could do to make the ve fuel harder for some more hp. ive got the pump to the head and the regular pump mods star wheel ,dennyt 2, fuel screw, but is there any thing i could do to get more out of it. Thanks

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92 cummins W250 extenged cab (The Goat) project truck
90 cummins W350 single cab dually flat bed 5 speed, he351ve 62mm
1959 chevy Apache 4bt cummins 4 speed
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Re: VE pump track mods need

Postby oldestof11 » Wed Jul 23, 2014 7:48 pm

Fuel pin that's not as aggressive as a Denny 2.
Jump the IP gear a tooth.
A good lift pump.
If it's a stock cam, I'd tighten the valves .02mm more than recommended (I think stock is .08 and .010 or that's where you want to end up)
M&H timing spacer
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Re: VE pump track mods need

Postby BC847 » Thu Jul 24, 2014 2:57 pm

- Ensure all the injectors "Pop" at the same pressure (within perhaps no more than 3bar) . . . or whatever works for you. Just make them consistent with one another.

- Make sure you're not quenching the flame with too much fuel, down low, before the turbo(s) light. ~ Lean is mean!
Cleaning up all that full throttle with no boost smoke will go a LONG way in making good power across the board. Tweak the AFC: adjusting the Star-Wheel, Smoke-Screw, and fuel-pin ramp profile so as to have a relatively clean burn of no-boost fueling all the way up to WOT fueling. ~ Lean is mean!


~ Lean is mean! This is NOT a warning as would be the case with a gasser engine (mean: melting chit). This is a NOTICE you can have Mean power running clean as compared to an over-fueled pig.



- Cough-up perhaps $75 an hour and get a couple of hours of private dyno time.
Dial-in the AFC (mainly the Star-Wheel). Dial-in the injection event timing. When dicking with the timing, try it with the KSB ON, and OFF. (That will greatly effect the sweet-spot of the static-timing). Perhaps getting groceries with the KSB OFF, and flat-out racing with the KSB ON. - In this mode, set the static timing based on the best WOT power with the KSB ON.

NOTE: Your '91 may need the 12VDC power OFF to have the KSB ON. The later IC'ed 1st gens are backward from the earlier, NON IC'ed 1st gens.

- Now, while still on the dyno, dial-in the W/M. Increase or decrease as needed for the best power, where you want it RPM wise.

ONE THING AT A TIME, verified with a dyno pull.

If you've got your mess together, tools, no stuck bolts, KNOWING how to quickly loosen/tighten the IP bolts for example, etc. You can get in a LOT of dyno runs in two hours.

EVERY time I've been to a dyno specifically doing this mess, I've left with no less than 50 WOT HP over what I arrived with.

Hope this helps.
David

1993 12mm VE Fueled W250 CC, Green
12.67 @ 103.35
Your basic farm truck ;)
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Re: VE pump track mods need

Postby 91bluecummins » Sun Jul 27, 2014 1:36 pm

ok i also have a 3800 rpm spring and 60lbs valve springs for the rpms, and 150 airdog
i was thinking about getting a timing spacer are they pretty good investment cause ive heard both ways.thanks for the help
92 cummins W250 extenged cab (The Goat) project truck
90 cummins W350 single cab dually flat bed 5 speed, he351ve 62mm
1959 chevy Apache 4bt cummins 4 speed
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Re: VE pump track mods need

Postby oldestof11 » Sun Jul 27, 2014 4:23 pm

Everything I've read says the timing spacer is worth it.
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Re: VE pump track mods need

Postby Sutter1stgen » Sun Jul 27, 2014 10:36 pm

Another mod I was going to try before I jumped the VE ship, was to put a pressure switch inline for my ksb. This would greatly help me spool at the line, give better bottom end, and still allow for a awesome top end.
Eric

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Re: VE pump track mods need

Postby RCCUMMINS89 » Mon Jul 28, 2014 12:43 pm

Ahineman has one... good mod.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: VE pump track mods need

Postby PToombs » Mon Jul 28, 2014 4:34 pm

What pressure does it come on at?
pete

Just enough power to break everything behind the crankshaft.
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Re: VE pump track mods need

Postby RCCUMMINS89 » Mon Jul 28, 2014 5:10 pm

I think I read where his comes on at 20 psi.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: VE pump track mods need

Postby AHineman » Mon Jul 28, 2014 6:58 pm

Yep, 20 psi.

I've got an on off on switch. Hot ksb, off, pressure switch setup.
Andrew

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Re: VE pump track mods need

Postby PToombs » Tue Jul 29, 2014 5:16 pm

Gee, and it just so happens that I have an adjustable Hobbs switch laying around doing nothing......... :mrgreen:
pete

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Re: VE pump track mods need

Postby AHineman » Tue Jul 29, 2014 5:34 pm

All the cool kids are doing it. :lol:
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Re: VE pump track mods need

Postby PToombs » Wed Jul 30, 2014 5:45 pm

Oh I'm definitely in then! 8) :lol:
pete

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Re: VE pump track mods need

Postby mhuppertz » Wed Sep 17, 2014 1:33 pm

So the KSB is off until 20 PSI? I also have some Hobbs switches laying around!
MARK
'93 W250, HTT Stage IV/16cm, POD's, cut AFC pin, Pump advanced, Pyro, Boost, Fuel Pressure Gauges all non functional, burned wiring, 3/8” fuel line, BHAF on custom intake, 3,200 Spring, ARP Studs, New Head at 392K, Detroit Locker, NV4500, other stuff…
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Re: VE pump track mods need

Postby Bersaglieri » Sat Feb 09, 2019 10:48 pm

Did this build ever get off the ground? I'm curious about how that compound setup worked out for you.
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