I have a (new to me) Stage 3 with a Rover v8 and the original twin carb setup.
It has a aux fuel tank and a Pollak 3 port selector valve that is not working 100%
I've routed around it for now, while I work out the best replacement selector but as part of the maintenance, I would like to replace the fuel line from the pump back to both tanks.
I have a few questions for those that might know the Series 3 109" well.
There seems to be a lot of fuel hose in the routing. Was it not mostly pipe?
If I wanted to put some pipe back in, is this easily done? What pipe is used?
Or should I simply leave it as standard fuel hose?
Some googling tells me the fuel line might have been 1/4" But it looks like 3/8 or 8mm.
I've sourced a 1/4 fuel selector for about $30 vs $300 for a replacement Pollak. So if 1/4 is OK, I will probably go this route.
(There is a cheaper pollak but it draws 500ma constantly when switched to the Aux tank - I'd rather go manual).
The fuel pump is located about halfway along the chassis. Is this the original location?
Next task would be to rebuild the carbys as it's running pretty rich right now. Not sure if that's a PITA with these types of carby (Stromberg/Zenith SU style), but I'll see I guess.
We have a Series3 Stage 1 and it also has an auxiliary fuel tank, we installed two manual valves at the side of the drivers seat to change tanks as needed. Our model has two fuel lines to each tank, one for suction and the other return. Our carburettors are Stromberg (SU) styled and they have a return line with a restrictor which is part of the supply circuit. I was informed that at some point Land Rover decided to make the fuel supply to the carburettors with a return to prevent over fueling the carburettors when on steep slopes. As it was believed the needle and seats could leak during operations if subjected to full fuel pump pressure and angled driving conditions. I am not an expert in this but the original piping is installed on the car and we went with that. The fuel lines are plastic and they are setup so that one three way valve is connected to the suction lines from each tank and the return lines are connected to the single return from the carburettors. The valves are good quality brass pieces from a marine supplier in Sydney and cost approximately $45 each. I installed quick connect air fittings at the three way valves to allow easier removal should the need arise they do not leak and are easy to install.
This is exactly the solution I was thinking of. The valves available are only 1/4 inch but after a bit of googling I have seen that the same ones are also available in 5/16 or 8mm so I just need to find someone selling them.
My SIII also has some of the fuel line as plastic as well. I thought it was a bit strange for the age of the vehicle.
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