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Messages - Huaralo

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CB350/400 / Re: CB350F clutch knocking sound
« on: September 01, 2017, 09:42:43 PM »
Thanks. My owner's manual recommends 20w50. I'll report back after I run it in and do the serviice.

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CB350/400 / Re: CB350F clutch knocking sound
« on: September 01, 2017, 07:55:58 PM »
Always been more of a computer guy, and I'm a bit lost with the bike. I found the workshop manual online and did some rebuilding with a friend who knows more about engines.

I've recently had the the head and cylinder off the bike. I installed some new piston rings on the bike as I had a broken oil ring in one cylinder. Also honed the cylinders. I took the head to a machinist since it was leaking really bad. He had to machine the valves and the seats to get it to seal good. I set the valve clearances to the workshop specs. Threw some new Honda points and condensers, gapped and set the timing. New D8EA plugs, gapped. I also synced the carbs as close as I could get them. New 20w50 oil and filter.

I loaned a stethoscope from work to locate the noise, and the sound is coming from the clutch. Both the cam chain and primary chain were pretty quiet. The clutch sound goes away when you rev the bike a bit. It's only present at idle.


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CB350/400 / CB350F clutch knocking sound
« on: September 01, 2017, 07:16:54 PM »
Hi,
I've bought a 350F and I've got a really noisy clutch.

It's really noticeable when the engine is cold and running on low rpm.

When I take the dipstick off the engine, the noise turns more into a metallic sound.
Here's a video of that: https://vid.me/6AFj1

When I pull the clutch the type of sound changes a bit, the more metallic sound goes away. Sort of changes pitch.
It didn't really seem as noticeable on the video, but here's another of that: https://vid.me/sJbIG

Do I just let it pretend to be a dry clutch or is there something I can/should do about it?

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