the size of the supercharger pullys

[wheelspin05]

hi im planning on supercharging my 328i bmw with a mini cooper s supercharger and i need to no the size of the pully that supercharger goes to

thanks

[RalphzMCS]

hi im planning on supercharging my 328i bmw with a mini cooper s supercharger and i need to no the size of the pully that supercharger goes to

thanks

The most common reduction pulleys for the mini are 15%, 17%, and 19%. Good luck with the project!

[bryan1970]

just curious but how do you plan on getting everything mounted up and plumbed?

[wheelspin05]

thanks m8 but its the size of the supercharger pully that goes on the crank i need (in mm/cm) if you can and im not sure yet ill send you a pic wen she all dun and i hav the sizes
many thanks

[mikeo]

Why would you put such a small S/C on an engine almost twice as large as it was intended for?

[L3000C]

i really doubt ur even gonna get e36 m3 performance with that lol......

[Don@Minimania.c]

From the Mini Mania Website: How Small is Too Small?
Pulleys reduced 16%, 17% or 19%, or using an oversized crank pulley, may spin the supercharger faster than our 15% pulley, but most of the additional boost cannot be used and can contrubute to engine and exhaust system damage. These smaller pulleys cause the supercharger to operate at higher RPM than it is designed to tolerate. Plus, the Roots type supercharger drastically looses efficiency at higher RPMs, generating excess heat as it tries to compress more air. In the process, it further overloads the barely adequate air-to-air intercoolers and causes the ECU to enrichen the mixture and pull back on ignition timing to preserve the engine. This results in lost power, poor fuel economy, lower reliability, the potential to 'meltdown' the catalytic converter and higher emissions.

At 15%, the ULTRIK pulley provides the most boost increase available without over-revving the supercharger at high engine RPMs. This ratio gives you added power without undue stress on the OEM supercharger or other adverse effects. Remember, if you're looking for performance increase AND reliability backed by the best Warranty in the industry, the ULTRIK 3-piece pulley upgrade system is the right choice for you and your MINI Cooper S!