Hi Just a quickie, checking valve clearances with my trusty Haynes manual. Haynes says to rotate the engine until the cam lobes point away from the valves before measuring (no problem so far) but then it states there is a point at TDC on the compression stroke where all the lobes on a particular cylinder point away from the valves. While this is obvs correct the lobes aren't pointin a full 180 degrees away from the buckets at this point (they're maybe 100-120 degrees past/before at that point). Now I've tried measuring at TDC and I've tried measuring with the lobes pointing straight up away from the buckets and it seems to me there's a little more clearance with the lobes at this point. So which one do we take or am I just imagining the feeler guages slide in easier with the lobes pointing straight up??
Personally I would always measure with the lobes 180 degrees away from the buckets, the triumph service manual states only check one pair of valves at a time, I don't think there is any position where you can check both intake and exhaust gaps simultaneously on the same cylinder. I think you can check two pairs at once on different cylinders though, something like intakes on cyl1 and exh on cyl3, that example may not be correct but if you set one pair at 180 degrees you should see another pair at the same position.
Yeah I think you're right. Although the text in the haynes manual suggests measing all 4 valves at TDC on the compression stroke the picture that they reference in the same paragraph shows the measurement being taken with the lobe pointing straight up.
Agreed, thats the vids I used. I've even downloaded and saved them just in case after another guys video showing Ohlins fork stripdown had disappeared when I actually needed it.
