Drivetrain pulley trouble
5th Gear
Joined: Oct 2005
Posts: 785
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From: oHIo
Blues,
Note for Cooper S pre 2005 model owners with supercharger pulley reductions:
We have noticed without exception due to the extreme heat induced on so called "power runs" on rolling roads, Cooper S owners are over heating the coat applied to the rotors within their earlier type Eaton supercharger unit. This causes delaminating and flaking away of the Eaton rotor coating, a loss of efficiency within the supercharger (loss of seal) therefore reducing boost pressure and airflow! This will cause a loss in power, but more importantly the delaminated coating has nowhere to go other than into your intercooler (further restricting air flow!) or even worse with smaller parts straight through into your engine!
Stolen from : http://www.precision-mini.com/DynoWarnings!.html
Note for Cooper S pre 2005 model owners with supercharger pulley reductions:
We have noticed without exception due to the extreme heat induced on so called "power runs" on rolling roads, Cooper S owners are over heating the coat applied to the rotors within their earlier type Eaton supercharger unit. This causes delaminating and flaking away of the Eaton rotor coating, a loss of efficiency within the supercharger (loss of seal) therefore reducing boost pressure and airflow! This will cause a loss in power, but more importantly the delaminated coating has nowhere to go other than into your intercooler (further restricting air flow!) or even worse with smaller parts straight through into your engine!
Stolen from : http://www.precision-mini.com/DynoWarnings!.html
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