SOHC.co.uk Forums > CB350/400

Valves, can the stem be bent?

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Eldrick:
 Just cleaning the valves and seats on the bike, removing them one at a time. I noticed one of them needed tapped with a hammer to get it out. (#1 cylinder). After the springs were removed the valve is tight in the socket so I removed #2 valve and that runs free in #1. The #1 is tight in #2 so I am guessing I need at least one new valve.
Am I correct with my reasoning?
 When the bike was running last week there was nothing wrong with the firing on #1 however, I don’t want to ‘force’ the valve back in if it is a sign that the valve may not function when the bike is running. I did run some 400grit sandpaper over the stem to clean that up, it did not make any difference to the tightnes of the fit.

Nurse Julie:
Yes, the valve could be bent, or the valve guide may have a crack in it.

McCabe-Thiele (Ted):
I think I have a good  used valve spare - yours foc for the cost of postage.
I need to double check first that it's not the inlet I have.
I'm out at the moment so will be a couple of hours.

Update  I have one ex: & one in: valve both serviceable - they look original factory cut angle. PM me which one you need plus your address. cheers Ted

Bryanj:
Yes it could be bent or the stem is mushroomed

Eldrick:

--- Quote from: McCabe-Thiele (Ted) on June 14, 2024, 02:57:01 PM ---I think I have a good  used valve spare - yours foc for the cost of postage.
I need to double check first that it's not the inlet I have.
I'm out at the moment so will be a couple of hours.

--- End quote ---

It is the Inlet valve (larger of the two heads) that is sticking so if you have one I would be grateful, if not I will source one.

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