Reply to "Webber Fuel Regulator"

The round chrome ones that you dial the pressure by clicking the dial up and down are leathal.

They are just a spring loaded diaphragm and tend to stick wide open BESIDES developing leaks through the case.

I use the Holley red regulator. It is factory set at 3-4 psi so you just install it and leave it alone.

In an interesting and related thread I was following on factory 289 FIA and USARC Cobras, Shelby didn't use a regulator. They ran a single fuel line from a single mechanical pump to a fuel block with four nipples and then an individual fuel line to each carb.

That sounds scary to me but apparently works because the pump under those conditions can't pressurize the carbs to the point of flooding.

I think once you introduce an additional pump like a electric fuel pump, you need to show caution and monitor the fuel pressure at the carbs as well.

This guy here, http://www.timsroadster.com/html/tuning_webers.html, took a different approach.

I've run his set up by a few knowledgeable engineers and they are concerned that this set up is using the fuel tank to cool the fuel in the system by returning hot fuel to the tank.

It just so happens that it would be relatively simple to plumb it into a Pantera using the original integral fuel pick up as a return and using the new type of pick up that is on the fuel gauge sender as the supply/pick up.

Having said that I don't want to be the one to test my fuel tank as a "heat sink."


The Holley works ok for me, so "if it isn't broken, don't fix it."