Can anyone recommend a company which I can source 11mm diameter under bucket valve shims from, as I'm running kent cams and require valve shims with depths ranging of 3.22mm to 3.54mm. The biggest shims Subaru offer is 3.25mm so can I buy these off the shelf else where.

 

Kent Cams should be able to supply "blank" inner shims for the STi's - IIRC they are approx 4 to 5mm thick and you need to linish/machine them down to the thickness you need to get the correct valve clearances. You will also need to harden the shims after they have been linished/machined prior to final assembly.


Mick