Jeremy,
Thanks for the info, your last comment about the nose of the cam wearing
makes sense, so you're right, it can't be the cams.
The only thing left is that since these are used cams I wonder if the
bearing is good.
Actually my valve adjuster screw is flat, completely flat, interesting
that your is spherical, that would make sense.
Dave
On Thu, 2004-04-29 at 18:12, James J Schneider wrote:
> "Now I'm suspecting that either the cams weren't hardened, or that I need
> to put hardened rockers in?
>
> One thing I did notice is that when the rockers are where you adjust
> them there is an angle between the rocker and the top of the valve, as
> opposed to being flat. This means that there is a very small surface
> hitting the valve when the rocker begins to close, think this could be
> the problem ?"
>
>
>
> I can tell you that the rocker wear pads are extremely hard. Web cam told
> me that Yamaha rockers are much better than Honda rockers. If you look at
> one, you will see that the wear pad is actually a separate piece of metal
> affixed to the cast rocker, and apparently that metal has very good wear
> properties. Web Cam told me that Honda hardens the surface of the cast
> rocker which is not as good. As for the cams, I would think that if they
> weren't hardened, they would wear off on the nose, not so much on the base
> circle, which wouldn't increase your measured clearances. Plus, a common
> method of making aftermarket bike cams is to take a stock core and hard
> nickel weld on the extra lobe material, then grind to size. I THINK that
> this method requires no further heat treatment because nickel hard weld is
> very hard.
>
> All that being said, I have no idea what your problem may be; that is very
> strange.
>
> The bottom of the valve adjuster screw is actually what contacts the valve
> top, and it is machined semi-spherical, so it never sits "flat" on the
> valve top. Maybe I am misunderstanding you.
>
> JEremy
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--
Dave Cramer <dave@xxxxxxxxxxxxx>
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