what size is the 10psi pulley for the m90 eaton

[robbie77]

does anyone know what size the pulley is that fit or similar sells to increase the boost to 10 psi for the m90 eaton on a stock supercharged com s or how to work it out? Any help would be great trying to save some bucks and get it engineered

[blofly]

I am pretty sure it is 3.4 inches........the pulley that is ;-)

[SUPERV6]

Yes its 3.4" for approx 10psi

3.8 is stock 6psi

3.4 = 10psi
3.3 = 11psi
3.25= 11.5psi
3.2 = 12psi
3.1 = 13psi
3.0 = 14psi

etc etc just follow the pattern

[robbie77]

thanks guys been a great help. blofly i should hope so mate lmao......

[burnz]

Yes its 3.4" for approx 10psi

3.8 is stock 6psi

3.4 = 10psi
3.3 = 11psi
3.25= 11.5psi
3.2 = 12psi
3.1 = 13psi
3.0 = 14psi

etc etc just follow the pattern

i asume your not touching the bottom pully otherwise ratio:% under/over driven (sorry to complicate things)

[SUPERV6]

Yes its just the blower pulley that is changed.