Seperate Swirl Pot

[stephen low]

Gregg

I'll be dropping into Marty's tomorrow so I'll try and measure my tank, but as I said I had Marty cut the top down to enable the pump to reach the base. The BA version has variable height like many of those pumps and sits in its own swirl chamber.

I just ditched the fuel sensing arm in favour of the vdo fittings I had bought.

So a V8 pump for a 5.4 l in a 5.0 l and no noise. Does run the two fuel lines however unlike the tricky GM version but finding space for these is far easier than space for a swirl pot and second pump.

Marty would have a spare pump in his shed if you had the time to get our there for a chat.

Cheers

[Ant]

I guess the principle is the same for EFI or carb as in my case, supplying adequate fuel at all times to the engine.

I have an alloy foam filled tank with two flexible pickups with large gauze filters, set in alloy cannisters with a slot for intake, sucking the fuel up is two little electric V8 holden pumps which can be bought at any Repco or BNT as here in NZ, these pumps send fuel to a Separate Tank which has a -12an return back to tank (this may need a restrictor to give a small amount of pressure) the tank has the Bypass return from Regulator, just below the return to tank. At the bottom of the tank is a -10an supply line to my Aeromotive 150gph street pump, that has a -8an line to the regulator etc, I believe this is adequate to supply the 675bhp engine.

Regarding hot fuel being returned from the Regulator I dont think that is an issue as it is being cooled by the flow from the tank and back to the tank, I think the trick is not to circulate the fuel to much but obviously a bit more than the carb needs.

Nice plumbing job Aussie Mike!

[gjkrv8]

Hi All,

I have been dabbling with fixing my fuel surge problems with a LP Lift pump and external Swirl pot as my Tank appears to be too shallow for a built-in arrangement.

My current setup is an external Bosch 044 with external reg.

I was looking at the back of my tank where the pickup outlet is and rightly so its right at he bottom of the tank.

If I put say a Carter Lift pump (which i have) level with the outlet the pump housing hangs down too low.

In the manual it says dont put the pump higher than 24 inches above the fuel tank.

To me this implies the LP pump can suck from a height of 24 inches?.

I have a convenient mount point for my LP pump about 100mm higher than the tank outlet?

Anyone done this before? i.e. had the LP pump higher than the tank outlet?

The only alternative I could see is an inline style LP pump that doesnt hang down etc.

Thanks

Rgds

Gregg