Fit Yoshimura ST-1 Cams

[Kristen]

Thanks for your idea about the brakes Seth. A couple of weeks ago I rebuilt the forks with new tubes and seals. While the callipers were off and the wheel was free to spin i could see the discs going in and out as they turned and the pads on the left side went in and out, the outer one clicking out at the same point each turn. Then while the wheel was off I removed the discs and cleaned up the mounting faces and refitted then, but it made no difference. The new discs should be here tomorrow so hopefully I'll get them on if it's dry.

I've just changed the chain and sprockets this evening. I thought the rear teeth were looking a little worn and the chain had recently gone slack and noisy, which prompted me to change them out. I've not changed them in the three years I've had the bike which is now at 30k and unless they were changed in the first 12k before i owned it, they were still the originals on there. When i took it apart the teeth on the front sprocket were starting to hook over and the spline was worn. The nut was looser than it should have been also. The chain hadn't stretched, but the rollers were worn and it had a bit of sideways bending. So they definitely needed doing.

Hopefully I'll be able to think about the cams again towards the end of the week, though maybe next week, as I'll be using the bike at the weekend camping and i don't want it off the road while i wait for replacement shims. Regarding the shims, I'm under the impression they are 7.48 (7.5) mm diameter ones.

[Notty]

I have clicking from the calibers, since new pads and EBC discs - was worried new discs warped as Mick had that problem with EBC - will try the spring bending - cheers Seth
@Seth

[gsxbarmy]

  

ALL can we continue this conversation in another thread please, this thread is about fitting cams, not chains or brakes etc thanks.

[nobby68]

Keep setting shims, start bike no problem, after a wee bit ticking starts to come and progressively getting louder,stop strip down and retakeshim gaps once engine cold no1 cylinder exhaust vale alternatively going from .27  to .30 or .33 any ideas

[grog]

nobby, very strange.No clues from me,usually set and forget. Bearings all tightened, no prob with thread etc.Does cam face look ok? Pretty simple so cant think of other reasons

[Hooli]

Checked ya shims are flat, one might be slightly not flat & adjusting the gap as it spins

[Eric GSX1400K3]

I was thinking maybe the valve seat in the head is badly carboned up, each time the valve closes, a bit of carbon comes off, changing the tappet clearance, then builds up again, changing the gap again.

[grog]

Eric, carbon building up would increase clearance, cam over valve. Something wrong with this scenario, just doesnt make sense.

[Eric GSX1400K3]

Eric, carbon building up would increase clearance, cam over valve. Something wrong with this scenario, just doesnt make sense.

yep, and that's what was posted: 0.27 to 0.30 to 0.33.  What about a soft valve seat? But then clearance would decrease...

[Andre]

alternatively going from .27  to .30 or .33

Alternatively and or is what puzzles me!