Not sure if it's bottom end or piston slap. Any feedback welcomed?

I know it is obvious but have you checked the valve clearances?

EDIT: Second video you can hear it a bit better. Sounds like a low end to me but I am no mechanic. Sorry I can't be of more help.
 
Both cylinders are definetley firing. Valves checked, timing checked and chain tensioner checked, although only externally. It still sounds a little rattly.

So if it is botom end, should i stop riding it? It still runs beautiful on the highways, just the bloody knocking sound at idle. ???
 
If you pull your oil filler is the noise more definite? If it's low end that thing should ring through there. Can you feel a vibration on the crankcase while it's doing it? Can you feel it on the top end? That sound does sound like a lower end knock but this is coming from an Automotive Mechanic by trade. Pull your oil and run it through a coffee filter, see if it has any metal bits in it, paying close attention to your filter because this is where most of it would collect.

Pull your spark plugs and Rotate the engine around by hand and see if you can feel any thing odd.

If it is a bottom end knock, yes. Stop, you're going to damage your crank/rod more than it could already be.
 
Idle is too low, valves need adjustment, carbs need sync. Pipes are too short plus 'open' doesn't work well
 
Thanks for the feedback guys,

mg42gunner, so i pull the plugs, how should i rotate the engine? Thought the kick start or take the timing cover off and use a spanner?

crazypj, So speed up idle, and synce carbs. Check!
What do you mean by pipes to short and 'open' doesnt work well?
 
Short pipes on a cb360 are any that don't make it to the rear axle. Open pipes are pipes without baffles our mufflers attached. Internal combustion engines need some back pressure to stay healthy and run smoothly.

Turn it over with the spanner under your timing cover. it wouldn't hurt to pull your valve adjusting covers off and watch the valves while you rotate to make sure they're opening and closing fully and correctly timed.
 
It's more than back pressure. A longer pipe provide scavenging that improves the exhaust flow....
 
It's a total misconception that you NEED backpressure.
You don't want more than 2psi in the pipe, you need the length and inner diameter to be right.
The bends in pipe cause enough restriction
Too short just messes everything up, internal pipe baffles are just too restrictive
 
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