Noisy GS125 motor

[GSXJosh]

So I bought this bike last year as a project for my 40th, it now runs, but I suspect an issue...

 

Is this just me hearing things or do I really hear dry bearings etc?

 

Gs125 YouTube link

 

Gs125 noisy motor YouTube link 2 after oil change and heat cycles.

 

Not part of the plan to pull the whole motor down.

 

[RideWithStyles]

maybe, from my experience the little 125s can sound a bit like that if they are dry after proper service or a long winter rest.

How dry for / not running/ was done to it before you do did the vid?

The camera was mostly closer to on the first one than the second one.

After the oil change it seemed better, could give it a few runs and see if it’s happy then drop the oil and inspect the filter to see if owt is in either.

 

 

[bud]

The old air cooled engines can be quite noisy. There is quite a bit more clearance on the piston than a liquid cooled bike.

It's hard to judge exactly how noisy it is on a video.

[Mawsley]

It’s been hellayears, but that sounds like my old GS125E

Edited March 20 by Mawsley

[Mississippi Bullfrog]

There is no water jacket to muffle internal engine noise on small air cooled engines. If you drain the oil and check it for any metallic particles it will tell you what's going on. If the oil is clear I would't worry. 

[Hairsy]

Tickover sound wouldn't give me any cause for concern. When you rev it slightly in the first video, there's a noise like a slight exhaust blow. Hard to be sure with such a short blip but worth a check.