SOHC.co.uk Forums > CB500/550

3 cylinder 550

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matthewmosse:
Head gaskets are always stuck like the proverbial and usually take a lot of time and care to remove on these bikes. the pry points are I think - been a while - at each corner at the front and Honda actually recommend using a srewdriver! there is actually even a recess for this if you look carefully

mickwinf:
thanks for advice i found the pry points, one screwdriver and one hammer and the head is off!! took out the no 4 exhaust valve and it is bent, i think i have a spare so should be an easy fix ( i hope!!)

kaceyk2:
Mickwinf,
When you said "after years in bits" did you mean your bike OR the motor...
Just had a thought, If the motor was in one lump before you took it apart to  find the bent valve.....,
It could well be worthwhile, to try and find out what caused the valve to bend??
Just a thought. To bend, it must have clouted the piston, I would want to know why..

mickwinf:
both bike and engine have been in bits engine had been assembled when i got it, supposedly by a mechanic but the cam timing was wrong, i think when i turned the engine over it hit the piston.Moral of the story, always check yourself, dont take someone elses word for it!!

mickwinf:
well after a strip down and replacement valve i now have a four cylinder 550 again! Got it back together and fitted my rebuilt wheels, had a ride down the drive,probably the first time it has moved under its own power since about 1982!! Feels great!!

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