When I decided to change the engine on ZS-WEC, I realized once the new engine (VW 2.4 liter) got delivered that it did not have a fuel pump port. So, I bought a Facet fuel pump, and I was hoping to gravity feed from the header tank, through the Facet, to the carb.
Well, the Facet seems to bring quite a flow restriction. Moreover, that restriction is not consistent. It depends on where the pump mechanism sits when you switch off. So, my 2.4 liter won't work at full RPM without the pump on. I have a warning light (light on-"pump on"), but the Facet being mounted inside the cockpit, I know I won't need a warning to know it has stopped! Serge Vidal KR2 ZS-WEC Tunis, Tunisia