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Was the engine cold? it needs a good three hours to cool down as measurments should be taken cold and you will get a false reading otherwise. |
9 degrees C here in sunny Buckinghamshire!
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Are you sure the piston is at top dead centre (tdc) and not 360 degrees out?
A good way to check this is to continue turning the engine and just after tdc the exhaust valves will start to open. If the inlet valves start to open first, you're 360 degrees out. To make sure you're turning in the correct direction put the bike on stand, in gear and turn the rear wheel in the direction of travel. |
I'm pretty sure, both marks (one on timing wheel and one on cam sprocket) line up. There is an 'I' mark just after an 'H' mark that I'm going by.
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| Finally double check the measurments you have for the gaps are correct. |
Same measurements in the Service Manual, Owners Manual and Haynes manual
I have to give it another go, so I'll make sure 100% that it's on TDC but having done it twice, I'm fairly certain it's right.
Question - Do valves generally tighten or loosen with wear?
Should I do them at the tight end or the loose end of the tolerance or in between, like I originally did?
This is a bloody time-consuming job!
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Bike: 2013 XT660Z, TKC70 tyres
Mods:
Barkbusters, Scottoiler, DIY Tail Mod, DNA Stage 3, Power Commander V & O2 Eliminator, Exan X-Black Stainless exhaust, Tool tube, Ohlins linear front fork springs, Nitron rear shock, JT front and Supersprox rear sprockets, D.I.D. VX 520 chain, Adventure Spec bashplate, DIY USB Outlet, DIY chain guide, Kev's Throttle mod
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