Does anyone know where I can order valve shims in 0.01 increments rather than the 0.05 increments you get on most sites? The acceptable range is 0.04mm (0.21 to 0.25) so ordering a 0.05 smaller shim will take me from just under tolerance to almost over.
in the past i have faced shims down to size. the good news is that they harden when machined so no worries about them going out of spec. i doubt you'll get shims in 1/100th of a mm increments anywhere!
The problem with socialism is that sooner or later you run out of other people's money!
(16-11-15, 01:37 AM)unfazed link Wrote: Note:-
The specs for the exhaust valves is 0.21 to 0.30 not 0.21 to 0.25 as stated in the Yamaha service manual and the Haynes manual.
What!!?? Is that right??? Where does that come from if Yamaha and Haynes say .21 to .25? Not that I doubt you... but...
I only have one outside spec and that gap is too small so it needs doing anyway.
Great idea to swap them round though - none of the others need doing but a swap could avoid the need to get a new one and even out the gaps across all the valves.
If I do still need a specific 0.01 multiple I guess I'll call the dealers in the area - the bikes roll off the production line with 0.01 multiples so I guess the dealers will have accumulated them as they do services...
having just re-read your post............if the yamaha tolerance is 0.04, then they only need to produce 0.05mm shims as 0.21 is in tolerance!
most bikes don't need touching until 40k plus anyhow, so a valve at bottom limit should be fine for 12k+
The problem with socialism is that sooner or later you run out of other people's money!
Reply from Haynes Dear Mr Duggan The difficultly here is that the discrepancy exists in Yamaha’s own literature. My view is that an exhaust clearance range of 0.21 to 0.30 mm has the same tolerance range as for the intake valves and that if you aim for a clearance of 0.25 mm you would err very slightly towards the tighter end of the range. Unfortunately without access to the factory there’s little we can do to confirm this. Penny Cox [/color]Motorcycle Editorial Manager [/color]DDI No: 01963 442044 [/color]e-mail: pcox@haynes.co.uk
So I went to the local independent mechanic (Chris Self, Ipswich) and he loads of all sizes - and did a handy swap-for-free deal too.
After bringing that one vale clearance into correct range, changing plugs and cleaning air filter the delayed pick-up problem is gone but an old problem is still there - if I accelerate moderately at about 15mph in 2nd gear out of a bend I get a weird noise that sounds like some slack in the transmission slapping about. Pulling away from the small roundabout at the end of my road is the litmus test - always happens. So I'm synchronising the carbs - simple job, done it loads of times before... but on the Fazer - NO SYNC SCREWS!!! They're not where the Haynes manual says they should be and I just can't find them!!! What's going on there then!!?? The carbs do need balancing as they're a bit out and it may solve the slapping. But I can't find the bloody screws - a simple job is impossible. How do the bike designers manage such a shitty trick!!??
09-01-16, 03:33 PM (This post was last modified: 09-01-16, 03:34 PM by roxburd.)
Ah, found 'em! Flipping heck they were where Haynes said they'd be, just about a foot behind a gap too small for light to pass through... slight exaggeration but I do need to buy a new screwdriver with the reach to get at them!!
