AMCQ46 wrote: ↑Tue Jan 09, 2024 9:50 am
Shims for the front exhaust valves both need the same size so it’s lucky I didn’t just by a generic box of single shims.
Unfortunately they are not in stock at the dealer so a 5day order from ktm, so I put the old ones back in, fitted cams and cam bridge, then refitted and reset the cct so I could see what size I needed for the rears.
Access to the rear cct is f-tight so then I had to go buy a 22mm ring spanner and grind it down to fit.
Thank god I’ve got small hands to get the cct and o-ring out.
I can use one of the rear shims in the other valve to get back to spec and the other one is also a ktm back order

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So just waiting now, but that comes with an increased risk that I will forget how all the wiring and ancillaries goes back in place (despite a the photos)
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Hot cams sets have three of each size, so you always have enough for the first time. But if you use up a particular size you won't have them available the next time, so my top tip is to always restock the box with the replacements ( you can buy them individually) so that your stock is always ready.
There are only a few common diameters, and usually only two diameters for bike engines, and I always buy a box when I buy a bike ( if I don't already have them) as I do all my own servicing.
The Tuono v4 is a similar faff, (with 16 to check/adjust) but the cost of the special tools, a shim kit and the gaskets/consumables needed was a similar cost (£800-ish) to paying a workshop to do them. So future full services only cost me the usual gaskets and consumables- lots cheaper.
Plus, I know the job's been done right, and I can keep a record of what shims were needed and where. That way I can spot where a particular valve is receding into the seat (if that one needs adjusting every time) and pull the head to replace it before I get valve failures.
It's not a favourite job of mine but better done than left. It'll be easier next time.
It's not falling off, it's an upgrade opportunity.