SOHC.co.uk Forums > CB500/550

Broken valve tappet covers

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Siloxious:
Hey everyone,

I have a crack in one of my valve tappet covers. Coincidentally, this cover is placed on a cylinder that is misfiring (but this could also be due to a clogged idle circuit in the carbs - I'm adressing that now).

I was wondering if this broken valve tappet cover has any influence on the performance of the engine. Of course I understand that oil could leak out of the engine because of this crack, but are there any other influences? I don't know if the camshaft and valve area of the engine should be at a certain pressure and this crack prevents that, but that would have an influence on all cylinders...

Does anyone have an opinion about this?


Kind regards

Bryanj:
No chance of any connection with missfire

davidcumbria:
I’ve got a spare valve cover ( the better type with pegged rocker shafts ) if you are interested.

McCabe-Thiele (Ted):
Just a thought

Are you sure it's a crack that is visible on both sides of the casing & not an internal casting mark?

taysidedragon:
If there is a crack I would be worried about water getting in. Rain or when washing the bike. Not good inside your engine. 😖

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