QUOTE(alexei @ Jun 1 2022, 07:49 AM)
many ppl switch to manual CCT so it can be tightened
stock ones are spring loaded, so the chain is allowed to run slightly loose
bikes I've heard mostly have this sound
some ppl want super quiet engine, but I think it means the chain is over-tighten, which may be not good. but is just my opinion I'm no expert
VC noise I haven't experience before, but to my understanding if the clearance is out of spec, the cam and valve cover are too close, so in fact has less sound
Mine also have this "Yamatick" noise. I have digest many statements from YouTube and forums and found out most would conclude CCT and some had tried Manual CCT and succeed. MT09 is clearly having this soft spring CCT problem and all of them solve by manual CCT. But the MT07/FZ07 is not conclusive. And if manual CCT is solution but this manual CCT for MT07 is very hard to get locally and very few website mostly from USA. stock ones are spring loaded, so the chain is allowed to run slightly loose
bikes I've heard mostly have this sound
some ppl want super quiet engine, but I think it means the chain is over-tighten, which may be not good. but is just my opinion I'm no expert
VC noise I haven't experience before, but to my understanding if the clearance is out of spec, the cam and valve cover are too close, so in fact has less sound
I use to have CBR 250R before twice change CCT due to rattle/ticking/clunking whatever people interprate as noise while engine is running. But the culprits for honda is the rocker arm bearings, it failed because of oil pump weak from factory before it reached 30,000km.
From my experience these Yamatick is not sound like timing chain because it vanish on revving and this sound more like valve attitude. Futher more it doesn't came frome the right side where the CCT is placed. But annoying when idling and also sometimes it comes intermittently. No doubt some may choose to have loud exhaust to kill the annoying Yamatick.
My experience with this bike also found out weirdly in manual the shift table is so low and awkward. Imagine the table listed shiting 2nd at 20kmh/3rd at 30kmh and so on 6th at 60kmh. If you follow this you will be lugging the engine, you will notice and feel it as experience rider or manual car driver. But surprisingly by following this my Yamatick become softer and almost vanish or maybe it just solve the intermittent ticking while idling or before shiting at certain rpm like 2000 or 3000rpm.
Definitely i dont have luxury time to catch-up with traffic every day doing crawling launching the bike in daily traffic. It depends on my moods so the Yamatick also will follow the same. But overall i manage to control this annoying engine sound passing 5,000km and nowadays it has new ticking charecter. No tick just normal roughness of sync engine parts working at low until 80°C and gradually ticking without intermittent until 105°C idling before the fan kicking and temperature bounce back to 90++°C.
In conclusion, i will endure stock standard MT07 like this untill 40,000km where valve need clearence to see how it goes. Most user reporting nothing to worry, accept MT07/ fZ07/ Tenere 700/ XSR700 like that. Get loud knockoff exhust or original akrapovic that cost a brand new budget kapchai to appreciate the bike more. I welcome any other experience mt07 owner to advice more so we can have a conclusive solution to this Yamatick.
Aug 7 2022, 01:04 PM

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