Author Topic: Honda XR80 Piston Fitting ?  (Read 1066 times)

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Offline mposs

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Honda XR80 Piston Fitting ?
« on: February 24, 2015, 06:59:59 pm »
Probably a dumb question but can anyone advise me on the correct direction the piston should face on a XR80. I am assuming that as the inlet valve is larger that the deeper valve recess in the piston should be on the inlet side, is this so ?? 


Offline mick25

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Re: Honda XR80 Piston Fitting ?
« Reply #1 on: February 24, 2015, 07:34:59 pm »
I say you are right the way you said .
Looks like the valves are off sett so the head / valves should match the piston cut outs .
Sit the piston on the head and line up the cut outs to the valves this will tell you which way .
It's not a dumb question better safe than sorry
Some Pistons have arows showing which way they go , going off manuals .
The cam will tell you to the biggest lobe on the cam should match the biggest cut out on the piston .
« Last Edit: February 24, 2015, 08:05:02 pm by mick25 »