changing valve guide seals without removing the head

[UK Pete]

Has anyone tried it using the rope trick , or compressed air?
pete

[Trigger]

Has anyone tried it using the rope trick , or compressed air?
pete

Have done the rope trick before with a special lever tool on the old mini's.

[Bryanj]

That would hold the valve shut but i dont think you will get a tool to compress the springs and get the collets out

[TonUp]

overhead valve compressor ... [ Guests cannot view attachments ]

[steff750]

Has anyone tried it using the rope trick

yes it does work but its so long ago i cant recall what bike i done it on , not as easy as it sounds, can get a bit a nightmare popping the collets back in, ok if you doing one or two valves, but not the full head it gets a bit of a headache patience is the answer really .

[matthewmosse]

I have in the past done valve collets on a cb500 by pressing hard on the tops of the collett retainers with the open jaws of a adjustable spanner, in my own circumstances I was from lack of the right tools and the head was laid flat on a soft wooden bench. I have used the string down the plug or injector hole to stop engines turning over a fair few times, so I cannot see why the 2 should not be combined, I think I can go as far as saying that I have even used the string trick on a sohc Honda, though not one of the 4's.

[Bryanj]

More agro and frustration than its worth especialy when the collets disapear into the darkest dingiest part of your workspace, what makes you think you need stem seals anyway?