Are the pumps buggering up because they are inferior, or are they buggering up because they are leaving bits of methyl in the tanks during the welding process?
Interesting question - and perhaps this needs a new thread.
When I was visiting with Will Freeman during his trip through NJ, he shared an interesting observation about his fuel pump failure(s) in California. Will said that whoever worked on his M3W (name escapes me) concluded after the 2nd failure that there was a high probability that the root cause of the pump failures was heat. Specifically, that the pump re-circulated the fuel back to the pump, but that the fuel was heated significantly due to the routing of the non-insulated fuel lines near the cylinders. The "hot" fuel then caused premature failure of the pump.
It's an interesting observation, admittedly third-hand, but worth investigating. A laser thermometer could easily check the fuel temperature after a long run - would be interesting to see if it does in fact heat-up significantly!
Given the high-volume of the Rover fuel pump, relative to the demands of the S&S, could also result in much more fuel re-circulation than expected.
Anyone heard of this theory before?
