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Vf700F Valves Very Tight. Differences After Adjustment? - Earlier VFRs

5 posts Started 23 Jul 2013 Last recovered post 24 Jul 2013 Wayback Machine snapshot 31 Oct 2013

#1

I started on adjusting the valves tonight. Couldn't even get a .13mm in there, anywhere. After reading on here and elsewhere, it seems to be pretty common. Does there seem to be a large difference in engine behavior after the adjustment? I was expecting them to be loose. Did the factory set the tolerances closer?

On the up side, I looked at the cams and thought they were scored, then ran my finger across them.. just oil streaks! Talk about relief. There is minor wear, but not bad at all.

#2

Shim in bucket valves tend to tighten with time as the valve seat wears.  As long as the valves are closing, being a bit tight should not reduce perfomance.  If the valves get too tight there could be damage from valves over heating.  Good to get them in spec.

#3

Ah, ok. Makes sense. I'm just used to the valves on the XL. They would be loose, rather than tight.

#4

I'm going on the assumption that the intakes are supposed to be 0.005-0.007, and exhausts 0.007-0.010. I think that's what the F2 was, and the VTR250.

0.13 is the low end of the tolerance, so it's not like they were super tight to no gap. What was the smallest gauge you could fit in?

#5

I can't find my other set, so .13mm was the smallest I had on hand. I couldn't get the gauge completely in any of them.

End of thread · 5 posts recovered Wayback Machine snapshot 31 Oct 2013