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> mechanical fuel injection
Blynes
post Dec 16 2003, 06:22 PM
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Who is the best at rebuilding a MFI pump for a race engine?

Is there any chance that a stock pump will work with a hot 2.5 L six engine?

Bill
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ArtechnikA
post Dec 16 2003, 08:08 PM
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rich herzog
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QUOTE(redshift @ Dec 16 2003, 05:08 PM)
What is the biggest motor you can pump with an MFI setup?

not sure anyone knows. IIRC, the Mercedes 6,3 and 6,9 engines were Bosch MFI -- that's pretty big. the 3,0 liter Carrera RSR's were slide-valve MFI, and versions of the 935 (up around 3,5 liters and turbocharged to around 2 Bar) were and they were pumping about 850 BHP in sprint race trim. aircraft engines run basically the same setup at around 540 cid - although at significantly lower compression ratios ...

nowadays you have to have a pretty darned good reason to want to run MFI -- Haltec and Motec (and other...) programmable EFI are so much better ... the "pumpeduse" TDI (turbo Diesel) engines have pumps running about 30 (!) Bar injection pressures, and they're all electronically controlled nowadays ...
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