fuel pump and filter?

[JDanno]

Thanks guys! That is exactly what I wanted to hear.
I bought the Andair duplex fuel valve for the quality over the one included in the kit because of all the reports I've read.
I was hoping there was alternatives to the rather expensive fuel pump Van's sell.

[frankh]

quite a few of them..

[JDanno]

The Van's fuel pump also has a diverter valve that recirculates the unused fuel continuously thru the pump (while its running) to keep it cool. Any source for this item. Nobody using them?

[frankh]

I bought mine from AFP. They come fron Parker Hannifin i think..Basically a 3/8ths pressure relief valve (technically a pressure sustaining valve) set to about 35 to 40 psi.

The AFP valves were resonably priced from memory.

Frank

[Ron B.]

Ordered our fuel pump from Van's yesterday.

[robpar]

Summit Racing has electric fuel pumps for EFI use that operate in the correct pressure range. http://www.summitracing.com/

I looked at Holley but their EFI pumps, at least all I could find, are submerged in the tank style. We use a Holley Blue Pump as a charge pump for our diesel injection pump and it had over 2000 hours on it before we had to put a seal kit in it. Holley pumps I know are good but the others at Summit should be good as well, I do not know that they are cheaper than Van's but they are another source.

The submerged style eliminates vapour lock and are quieter than externally mounted pumps. They also have an inlet sock that somehow passes gasoline but not water. I have heard that someone is working on a pump like these for aircraft use but I do not know a source.


Bob Parry

[chaskuss]

Originally Posted by frankh

I bought mine from AFP. They come fron Parker Hannifin i think..Basically a 3/8ths pressure relief valve (technically a pressure sustaining valve) set to about 35 to 40 psi.

The AFP valves were reasonably priced from memory.

Frank

Listers,
There are actually TWO valves mounted on the manifold. Both are REQUIRED for proper operation. The gold colored valve is a one way check valve. The check valve is open when the electric aux. pump is not running. It allows the engine's mechanical pump to draw directly from the fuel tanks. When the electric aux pump is engaged, the pressure in the manifold causes the check valve to close. Once the check valve closes, the electric aux pump's output is forced through the manifold towards the mechanical fuel pump's inlet. When the electric aux pump is engaged, it can create up to 100 psi of fuel pressure. This is to much for the Bendix (aka Precision) fuel injection system. The blue valve on the manifold is the fuel pressure regulation valve for the aux fuel pump. It is made by Kepner Valve. It is designed to open at 25 psi (the desired fuel pressure for the system). Any excess fuel (and excess pressure) is vented by this blue valve back into the intake loop of the electric aux pump.
Charlie Kuss

[chaskuss]

Originally Posted by robpar

Summit Racing has electric fuel pumps for EFI use that operate in the correct pressure range. http://www.summitracing.com/

I looked at Holley but their EFI pumps, at least all I could find, are submerged in the tank style. We use a Holley Blue Pump as a charge pump for our diesel injection pump and it had over 2000 hours on it before we had to put a seal kit in it. Holley pumps I know are good but the others at Summit should be good as well, I do not know that they are cheaper than Van's but they are another source.

The submerged style eliminates vapour lock and are quieter than externally mounted pumps. They also have an inlet sock that somehow passes gasoline but not water. I have heard that someone is working on a pump like these for aircraft use but I do not know a source.


Bob Parry

Bob,
While automotive aftermarket pumps will easily work for this application, they will all NEED a manifold/check valve/fuel pressure valve (like that supplied on the Airflow Performance Pump Assembly sold by Vans) or an equivilant to work on a Lycoming mechanical fuel injection system. The Bendix/Airflow Performance systems operate in the 25 psi range. Most automotive EFI pumps will generate up to 100 psi. EFI systems have the pressure regulation/relief valve up in the fuel injector manifold, NOT as part of the fuel pump.
Charlie Kuss

[frankh]

Originally Posted by chaskuss

Listers,
There are actually TWO valves mounted on the manifold. Both are REQUIRED for proper operation. The gold colored valve is a one way check valve. The check valve is open when the electric aux. pump is not running. It allows the engine's mechanical pump to draw directly from the fuel tanks. When the electric aux pump is engaged, the pressure in the manifold causes the check valve to close. Once the check valve closes, the electric aux pump's output is forced through the manifold towards the mechanical fuel pump's inlet. When the electric aux pump is engaged, it can create up to 100 psi of fuel pressure. This is to much for the Bendix (aka Precision) fuel injection system. The blue valve on the manifold is the fuel pressure regulation valve for the aux fuel pump. It is made by Kepner Valve. It is designed to open at 25 psi (the desired fuel pressure for the system). Any excess fuel (and excess pressure) is vented by this blue valve back into the intake loop of the electric aux pump.
Charlie Kuss

Correct..in my experience the Blue valve actually makes closer to 35 or 40psi.

You could also use a an Andair non return valve in place of the gold coloured one..I use two of these for my wingroot ony electric pump system.

Frank

[chaskuss]

Originally Posted by frankh

Correct..in my experience the Blue valve actually makes closer to 35 or 40psi.

You could also use a an Andair non return valve in place of the gold coloured one..I use two of these for my wingroot ony electric pump system.

Frank

Frank,
Do the Andair valves have a hinged "flapper" plate inside? Those blue pressure regulator valves are made by Kepner Products. The part number lists the relief pressure as 25 psi. However, I suspect that may be when the start to open, rather than when they are fully open. Either way, those Carter fuel pumps (originally used on 75 to 79 Cadillac Eldorados with EFI) produce an incredible amount of volume. I suspect it's the pump's capacity more than anything that raises the fuel pressure.
Charlie Kuss