Lift pump pressures...are these OK?

[Crankme69]

Idle 4 psi
cruise 3~4 psi
normal acceleration it will drop to 2 then levels back off between 3~4
WOT it will drop to zero until it shifts near 3600 rpm's then it will come back up to 1 psi

TIA,
69

 

[6.2 turbo]

No, you should run a bigger lift pump,and lines, I run 12 psi on the db2. The holley blue or black pump is a good one and have an internal regulator if you want to adjust pressure.

 

[dangerousdave]

I believe the FTB (feed the beast) mod would cure your ills, pressure vs volume IMHO.

 

[JMJNet]

Idle usually a little higher than 4, like 7 or 8 psi.

WOT should be between 2-4 psi.

What LP did you use?

 

[Crankme69]

Just was checking it, the LP might be original, don't know, trying stay a step ahead & keep the monster from awakening :thumbsup:

I'll prolly be changing that out ASAP, along with the new oil cooler & lines, new pillar mount gauges, EGR intake delete, maybe a new exhaust & then maybe a chip...just a few things need to do on my list LOL ):h

Thanks :thumbsup:

 

[JMJNet]

Get the LP from 93 model. A little bit higher pressure and volume rate.

 

[guybb3]

Get the LP from 93 model. A little bit higher pressure and volume rate.

I'd get a Walbro FRB-5 instead.

 

[ak diesel driver]

Any update on the FRB-28?

 

[JMJNet]

I'd get a Walbro FRB-5 instead.

That is good too. I would when mine goes out. Except, I still have one spare.

 

[Monarkman]

Any update on the FRB-28?

I emailed Walbro about this very thing. This is the response I received on Jan 14th. His contact info is on the bottom if anybody feels froggy.

I'm sorry but the FRB-28 has not been released as of yet. I foresee not
for another month or so

Luis Salas

Program Manager - Aftermarket

Walbro Engine Management

6242-A Garfield Avenue

Cass City, MI 48726

p. 989.872.7322

f. 989.872.1135

 

[Crankme69]

Ok I'll ask, what is the FRB-28 supposed to do differently?

 

[ak diesel driver]

Supposed to be a little more flow and a little more pressure.

 

[Crankme69]

Thanks

 

[Matt Bachand]

Also of note is where you are picking up your readings from. If you are at the water drain, which is pre-filter, your a lot lower than that at the IP.

 

[Crankme69]

Yup thanks Matt, readings were taken from the water drain with my new gauge from Lupo. The truck runs great...got new problem though gonna start a new thread, had to drive it home 16 miles last night with the emergency brake to stop, NOT COOL!