valve clearance!

bushmechanic · Feb 2, 2009

Smorgasbord said:
I'd guess that if you have got the flat tappets the feeler gauges are the best way to set the lash. But if you have the concave tappets i doubt the goodness of the gauges strongly. Tappets are made flat or concave, which ones did your bike come with?
.

Hi smorgy

I flattened mine off with 800 as they were a liitle worn, enough to feel the cup while feeling the feelers, they had about a 0.01mm cup

so even "badly" cupped the variation is + 0.01 from measured. still better than +/- 0.02 by the turns thingy.

I like the lash forward and back idea

was gonna go for a ride but found a cracked rear rim.... more ktm plasticene

regards
Bushie

Smorgasbord · Feb 3, 2009

At 85h I replaced tappets because I had over tightened them too many times. The old ones were flat and showed some wear that I think was a lot like the wear of your tappets. The new tappets were concave when purchased new and were a lot deeper. I never bothered to try to measure them. (One of these new bastlers turned blue and seized in under 5 hours. But that is another story.) I would not trust the feeler gauge with my new tappets, they are that dished. With the old flat tappets I'd happily use feeler gauges even when worn 85h. Regards.

Taffy · Feb 3, 2009

it's not just the tappet pads, its at least 50% the knuckle joint. the that wears and goes all floppy so the tappets are changing their clearance all the time.

regards

Taffy

valve clearance!

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