Failing Fuel Pumps

[Tom Nolan]

I had to replace the fuel pump again....for the 3rd time on my Thunderbolt stocker. Lost a heads up first round because of it! After the second pump failed I contacted the manufacturer to discuss the failures.......talked about filters, mounting, hose size, and voltage? They said it was the voltage, my 16v system was spinning the pump to fast. Ok I installed a voltage step down unit before the pump giving it 12.7volts.
Failure #3 I called the manufacture again and discussed why I have had pumps fail.....discussed filters, mounting, hose sizes, voltage etc. They agreed that everything is how its suppose to be, but would not offer servicing or replacing the pumps. I tore into the pump and it has basically ate it's *****? Rotor, vines, and housing are tore up. I buy VP C-25 straight from the track so no chance of contamination. What am I doing wrong? Is the fuel to blame? Is the pump junk? Help?