Stiegemeier Porting Services, LLC

STIEGEMEIER

Eaton Supercharger Blue Printing

High Boost Applications

The Eaton supercharger is engineered for specific type vehicles and rotor speed regulated by pulley size. After 6+ years of steady research and development, we have seen rotor to case wear patterns that are consistent with vehicle types.

The rub marks are mostly shadow type that is caused by rotor coating contact. There are two different coatings that appear on Eaton rotors.

1. Black coating - In the past I referred to as Teflon. It is actually an abratable coating to allow rotors to hone in.

2. Gray coating- This is a different type of coating for the same reason for rotor hone in, this type is less durable and usually flakes off causing scratches that can lead to galling and supercharger lock up.

A smaller top pulley will spin the rotors quicker for higher boost levels .100 equates to 2lb. of boost. This results in more power and more speed when increasing rotor speed from an OEM setting.

The rotor hone in areas, which we see, as rub patterns will become aggressive causing blower noises, which at times will disappear when the unit heats up and expands. At other times it can cause permanent damage.

All superchargers need to be Blue Printed when increasing rotor speed, past the OEM setting. Blue Printing the supercharger amounts to machining extra clearance in critical rub areas. Stripping rotors (specifically the Gray coating), correcting any rotor timing issues affected by casting core shift, cleaning, de-burring, adding new specific type of supercharger oil and high load Bearing grease along with replacing spring loaded drive couplers with a solid performance type, (when needed). Lastly, inspection of bearings and seals, at the time of Blue Printing.

A rebuilt Front drive is a very wise option, for the added insurance of durability.

High Performance Eaton Blue Print $265.00 (As described above in last paragraph)

(Blue Printing has and is Included in our porting process)

Front Drive Rebuild:

A complete disassemble of the Front Drive, full inspection of the case core, any repair or machining will be done at this time (if needed).

All bearings and seals are replaced with upgraded High RPM performance pieces. Bearings are checked for proper press. Seals are installed with a semi drying liquid gasket seal. Retaining clip and fill plug replaced as needed. Pulley re-install included on any Front Drive Rebuild.