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R3 valve specs?

Discussion in 'Tech' started by Tunersricebowl, Mar 21, 2017.

  1. Tunersricebowl

    Tunersricebowl Fog, onward through.

    Hello again, been gone a while (a long while).
    A friend asked me if I wanted to tinker with an R3 engine but I can't find a ton of info on the tubes (my google-fu is weak I guess)..
    So, what is the intake and exhaust valve stem diameter on this little bugger?
    Is cutting the valve seats an act of God?
    What's the squish (I know they can differ between examples)..
    What's the PTV clearance?
    And any other free advice I can glom!
    I've been pretty bored for a year or two, maybe this thing would provide some interesting tinkering.
     

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