Maintenance & Technical > KX500 Original

Port timing

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kwakman:
doordie,
          thanks for that. Its nice to know I cant be fooled by a manual. This time.
As your aware, I'm on a quest for a top end powerband, so I'm running later 2 ring piston,(less dome, cant find a forged 86 spec) to reduce compression, gonna get top end port job, and probably an fmf desert pipe.I've retarded the ignition timing, and I'm gonna preload the p/valve spring with a washer so it opens later. anything else anyone can think of?

kwakman:
Seems 2 me the 86 has ex timing for high rpm, yet transfer timing better suited to low rpm. Or am I just talking 2 myself again........126 degrees of transfer would match the ex timing better, wouldnt it..... hello.......

stewart:
i am listening,,i take it you have an 86

kaw rider:
kwakman
you are right about 126.  But with 126 low to mid will be in the toilet. It depends on your motor set up

kwakman:
Is it really that obvious?  :evil: yes I do. On one of the threads, it says your running 130 deg transfer and 200 deg exhaust stewart; did this bugger your bottom end?

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