Attention: TDR Forum Junkies Yes same Holly Fuel pump & Regulater
( dead head type, not used by me ( tried it at initial install, Low Fuel Pressure under load))
I did not explain the 3 pos sw very well, It is my Design/wiring.
A 3 position switch is mounted on the dash. on-com-on
I taped the OEM LP Power wire.
That wire goes to 1 side of a three position sw,
+12 V to other side of the three position sw
The common terminal ( center post ) goes to a relay,
This relay powers the Holly Blue ( direct 12 Volts from Bus )
When the sw is in the OEM LP position the holly blue is controlled by the computer just like the OEM LP.
When the sw is in the 12Volt position The Holly Blue runs without the Computer.
I use this to bleed the system of air ( no starter bump required).
I called both Holly and Summit( Jeggs) forget which,
They told me that the Holly blue was not reccomended for Diesel.
Holly said the fuel is to heavy...
They also stated that the pump must be mounted below the fuel tank, The pump has no suction ( there words )
My opinion , It does have 'some suction' but is not reliable ( at least for me ).
As for mounting below the tank, My tank is 2 inches below the frame, at the lowest mounting point,( without hanging the pump below the frame) the fuel pickup in the tank will be lower than
the fuel pump. I did run the tank down quite low (running on the Holly alone) and did see a drop in fuel pressure, especially
on a goodly hill under power , My opinion, any LP used on the
dodge MUST have good suction qualities to maintain fuel
volume under load.
As for fuel pressure, I fell uncomfortable running High fuel pressures to the VP44, my personel preferance.
Myself ( and I am only speaking for myself ) I do not think the Holly Blue ( nor the Red or Black, ) is a long term solution for me.
Presently I am running both an OEM LP and the Holly Blue
The Oem LP provides the suction and feeds the Holly Blue.
Without a regulator , The pressure spikes to close to 30 psi
on start up ( this is with a dampened fuel gage,) I suspect
the actual pressure is higher in the VP44 inlet,
That is why I installed a bypass regulater set to ~12 psi...
Sorry I confused you... Old Brain, Old Eyes, and Old ,
well old everything
Hope this helps, And , No problem, just a discussion,
I may be Old but I do listen to all, I'm always learning.
( dead head type, not used by me ( tried it at initial install, Low Fuel Pressure under load))
I did not explain the 3 pos sw very well, It is my Design/wiring.
A 3 position switch is mounted on the dash. on-com-on
I taped the OEM LP Power wire.
That wire goes to 1 side of a three position sw,
+12 V to other side of the three position sw
The common terminal ( center post ) goes to a relay,
This relay powers the Holly Blue ( direct 12 Volts from Bus )
When the sw is in the OEM LP position the holly blue is controlled by the computer just like the OEM LP.
When the sw is in the 12Volt position The Holly Blue runs without the Computer.
I use this to bleed the system of air ( no starter bump required).
I called both Holly and Summit( Jeggs) forget which,
They told me that the Holly blue was not reccomended for Diesel.
Holly said the fuel is to heavy...
They also stated that the pump must be mounted below the fuel tank, The pump has no suction ( there words )
My opinion , It does have 'some suction' but is not reliable ( at least for me ).
As for mounting below the tank, My tank is 2 inches below the frame, at the lowest mounting point,( without hanging the pump below the frame) the fuel pickup in the tank will be lower than
the fuel pump. I did run the tank down quite low (running on the Holly alone) and did see a drop in fuel pressure, especially
on a goodly hill under power , My opinion, any LP used on the
dodge MUST have good suction qualities to maintain fuel
volume under load.
As for fuel pressure, I fell uncomfortable running High fuel pressures to the VP44, my personel preferance.
Myself ( and I am only speaking for myself ) I do not think the Holly Blue ( nor the Red or Black, ) is a long term solution for me.
Presently I am running both an OEM LP and the Holly Blue
The Oem LP provides the suction and feeds the Holly Blue.
Without a regulator , The pressure spikes to close to 30 psi
on start up ( this is with a dampened fuel gage,) I suspect
the actual pressure is higher in the VP44 inlet,
That is why I installed a bypass regulater set to ~12 psi...
Sorry I confused you... Old Brain, Old Eyes, and Old ,
well old everything
Hope this helps, And , No problem, just a discussion,
I may be Old but I do listen to all, I'm always learning.
