Are the aftermarket (Cravenspeed & Perrin) crank pulleys recommended for performance gains on the SC R53 or will this cause problems , later on ? Thanks...

 

No we never recommend those style non dampened crank pulleys as they will over time damage engine bearings and oil pump gears. They also have a neg effect on the engine tuning so even though the car may rev faster with it being so light it still makes less power.

If you need a new crank pulley we would recommend the ATI damper as it is a little lighter than stock, but also balances better so it will run smoother along with being more reliable.
https://www.waymotorworks.com/super-...ulley-r53.html

 

There are threads here on both the dampered type that Way sells and the (light weight) non-dampered that others sell. Cravenspeed is a vendor here that has the lightened pulley. Both "sides" believe they are correct so it is up to the buyer to decide.

https://www.northamericanmotoring.co...nk-pulley.html

 

This is my first MCS and I was not aware that the Cravenspeed & Alta pulleys were replacing the inertia ring balancer, like Way Motor Works pointed out.I thought that the Mini utilized a separate balancer that the lightened pulley mounted to but, to run a non-dampened balancer would cause destructive torsional engine vibration to the crank & bearing assembly. ATI & Fluidampr silicone filled balancers eliminate crankshaft torsional vibrations but, will not cure an imbalance condition.

 

Between over 85,000 Gen 1 threads and the experience of the members/vendors, not too much about a MINI you cannot find here.

 

North American Motoring and it's members are great for how-to knowledge and information.

 

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