SOHC.co.uk Forums > Project Board
CB350F Rusteration
andy120t:
Oh - thanks! I haven't seen those on my 650, but will have a look in the daylight to see if they are there too.
Andych:
You see plenty of cars have valve seals replaced with the head or heads still on. They basically use a leak down tester to pressurise the combustion chamber and they use a fulcrum to compress the valve springs so they can slip in the collets... worth a try... worst that can happen is the valve wont stay up.. then you will need to drop the head off..
Looks to be in really good condition inside though..
kevski:
Thread a length of rope into the cylinder bore then raise the piston to compress it against the valve bottom, do the job, lower piston, pull rope out, don't forget to leave enough rope hanging out of spark plug hole to retrieve the rope though.
Moorey:
Its the rope method I have used. Getting the springs and collets off is easy, just put a socket on top and give it a tap and they jump out, getting them back in will be a bit more awkward. :)
kevski:
I thought the early ones did not have stem seals on the exhaust side, i have not been into mine so unable to verify.
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