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Originally Posted by ziadel
the desmo system is sweet, until you have to have it serviced 
what is it, every 3k miles they need to be done? and on the 916 family that entails pulling the engine  |
I'm not sure where you are getting your information but valve adjustments are required every 6k, cam belts every 12 and the motor doesn't have to be pulled to do any of that. To be honest, nothing is hard at all, it just requires the right tools. The adjustment of the valves is what takes the most time, inspecting is only 3 hours - book. To adjust a desmodromic valve you don't have a nut on top of the rocker to tight or loosen to adjust the lash. You have a opener and closer shim that mechanically adjusts this - thats what is time consuming. Checking the valves is quick, its when you need to sand/grind down these shims to get them to just the right size for correct lash. To the best of my knowlegde there is only 2 size shims so it is almost impossible to not have to sand one down, they just never fit perfect out of the bag.