Honda-SOHC
SOHC.co.uk Forums => CB350/400 => Topic started by: 470four on March 27, 2011, 08:48:00 PM
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Had this fitted to a 400/4 camshaft I bought off ebay some weeks back - the cam is fine, the sprocket is a little worse for wear...
(http://i109.photobucket.com/albums/n61/santav10/DSC05010.jpg)
Needless to say the chain has been jumping the teeth to a large extent! On say a rear drivechain sprocket this is easily do-able by the mechanically unsympathetic - surely on a cam sprocket it would only jump a few before mechanical carnage ensued between pistons & valves, stopping the engine?
My only guess is that the owner had run a presumably very noisy loose camchain for quite a while, running the sprocket teeth into needlepoints before it finally slipped round, taking the tops off?
Your thoughts: :)
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I think he got his money worth out of that :o
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VERY worn and neglected chain and yes the valves should have hit the pistons---have you removed them and spun them in the guides to check?
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That is very nasty, must have sounded terrible.
Cheers
Den
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VERY worn and neglected chain and yes the valves should have hit the pistons---have you removed them and spun them in the guides to check?
Not my engine, only bought the cam/sprocket so I dont know! :)
I would have thought it wasnt a pretty sight... aircooled engines are never quiet but FFS - why run it into this state??! ???
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When I was younger (and no dinosaurs did not rule the planet then!) for my sins i ran an Enfield Crusader sports and the gearbox sprocket came out looking like that but in my defence i was only on