piston lift pump?

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piston lift pump?

Postby tjsmokin » Fri Jan 29, 2010 5:49 pm

is the stock replacement piston lift pump from a 94/98 second gen the same psi as the low pressure lift pump? i ordered one from a parts house and am a little scared to put it on. think it might be to high or pressure and blow seals or something. anyone know exactly?[/img]
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Postby lectro_static » Fri Jan 29, 2010 5:53 pm

yes it is to high pressure, you can get a boost referenced pressure regulator and run it.
soon to be 1985 Chevy crew cab with 93 cummins running gear
weeping head gasket
4" straight pipe
M&H M3 fuel pin
M&H Dynamic Timing Advance
366 spring
Full power screw bottomed out no runaway
Auto Meter EGT and Boost
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Postby Richie O » Fri Jan 29, 2010 5:59 pm

You can also get a dead head regulator as well and set it at 15 psi. It won't hurt the lift pump to be regulated.
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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