12mm Exergy ??

[S Phinney]

The pump is rated to 4500 rpms. Do you have a sump? Either something is causing a restriction or the pump has a problem.


Sent from my iPhone using Tapatalk

 

[greendury]

I do not have a sump pulling from stock pickup. I'm keeping positive lift pump pressure though.

 

[Awenta]

What's lift pump pressure during this?
I think that's your restriction. What size lift pump?


Sent from my iPhone using Tapatalk

 

[greendury]

It's a ppe 160. Lift pump will drop to 2 psi but will stay positive pressure.

 

[WolfLMM]

An update this season. I am running 100% over exergy injectors with the same 12mm pump and will still drop actual rail down to 22000 psi when commanding 26000 during a pull. Pulse is at 2300us. 1/2 inch feed all the way to the pump. Holding 2-10 psi during a run.

My 12mm is holding 29,000 psi on 1800ish pulse with 200% overs. Just for comparisons sake.

 

[IOWA LLY]

It's a ppe 160. Lift pump will drop to 2 psi but will stay positive pressure.

Get a good lift pump. And put a sump in it.


Sent from my iPhone using Tapatalk Pro

 

[Chad006]

Get a good lift pump. And put a sump in it.


Sent from my iPhone using Tapatalk Pro

X2 2psi is not even close.

 

[greendury]

The same lift pump filter setup supported duel fuelers on 80% injector running a 2800us with out dropping rail so i figured it would be sufficient for my current setup. But agree sump and bigger lift pump is a good place to start.

 

[Dozerboy]

Can't you test the return rate of a stroker pump to find out if it's bad? I won't be throwing parts at this without knowing the CP3 good.


Sent from my iPhone using Tapatalk

 

[gmduramax]

Hook a 5/8 hose to the vent inside your fuel pick up and run that down into the cup. Hook your feed line to the vent. You'll be shocked how small the opening is in the cup.