Guest Blue02wrx Posted November 15, 2003 Share Posted November 15, 2003 does anyone know the flow rate and psi of the stocker? anyone have any reccomendations for an aftermarket replace ment. thanks, Brian Quote Link to comment Share on other sites More sharing options...
jeffp Posted November 17, 2003 Share Posted November 17, 2003 I cant give you the flow rate of the pump. I never flow tested the part, but I do know thay have a 65psi relief valve in the pump, so it will NEVER pump a higher pressure then 65psi. A good alternative pump is the Bosch unit. That pump is a direct bolt in to the car and it will flow 65GPH at atandard 2 bar fuel pressure, and support a turbo application to about 20psi of boost @ 2 bar static pressure. Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted November 17, 2003 Share Posted November 17, 2003 I tested the stocker at 95 liters/hour with 50 psi head. The Bosch will flow a minimum of 60% more at the same pressure. IMHO, there is no reason EVER to replace a stock pump with another stock pump. Quote Link to comment Share on other sites More sharing options...
Guest Blue02wrx Posted November 19, 2003 Share Posted November 19, 2003 which bosch are you speaking of...part number? what about the msd pump at summit for 74.99 msd-2225 says it will support up to 500 hp in an efi application. i have a stock fuel pump but i am wanting to run 18psi or so, and i was figuring if i needed a new pump. thanks for the help guys, Brian Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted November 19, 2003 Share Posted November 19, 2003 which bosch are you speaking of...part number? what about the msd pump at summit for 74.99 msd-2225 says it will support up to 500 hp in an efi application. i have a stock fuel pump but i am wanting to run 18psi or so, and i was figuring if i needed a new pump. thanks for the help guys, Brian That MSD pump will run out of flow way too early. Try the Bosch application for Porsche Turbo or Delorean, or even Saab turbo. They used CIS (very high pressure) so they are suited for flowing well at the lower fuel pressure of the Zs. There are lots of numbers, but all the above applications will work. Quote Link to comment Share on other sites More sharing options...
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