Topic: CB350f valve timing

[klp]

I had my head off to repair the common left front oil leak - per the manual I set the marker to T for 1,4 then made sure the cam chain drive sprocket marks were in line with the top of the head.

What I don't understand is how to I determine which is TDC compresion vs TDC exhaust. Maybe I am overthinking it.

I also test fit the valve cover and it sits up about 1/16 or so depending where you rotate the engine. I have all the tappet adjusters backed off - are the rubber bands to keep the adjusters up? Mine seem to sit there pretty good on there own.

Thanks all, here's hoping for no leaks. I did use copper coat, opted out of any sealant around the o rings.

[klp]

Well I think I just answered my own question. If it was the exhaust then the cam lobe would be facing down. TDC compression should have both facing up.

[MauiK3]

TDC compression both valves are closed after the intake closes.

[Bodi]

Doesn't matter. Set crank to T-14 and align the cam mark parallel with the head top surface. That's all.

[bryanj]

Look at the cam lobes on the two outer cylinders, the 2 pointing down are on compression and the 2 pointing up exhaust but it dont matter a stuff anyway cos if you turm the crank till the 1-4 T mark lines up again( one full turn) the cam only rotates 1/2 turn and the lobes swap over