I just adjusted my valves this past weekend so you'd think I'd remember
better but I think my adjuster screw ends looked pretty flat and they
didn't seem to contact nice and flush either, but I don't suspect
anything amiss on my machine, that's the way it is I think.
'95 1100
So, what's the performance story on the cams?
On Apr 29, 2004, at 7:09 PM, Dave Cramer wrote:
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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