There is no direct path between the shim and the valve head. What you are
probably seeing is something else stuck in the valve. You could have sucked
in a nut or small flying bird and got it stuck in the valve. When the
piston returned to TDC it smacked the valve. This caused the rocker to come
loose and then the shim fell out. I bet that the shim is in an oil passage
or in the oil pan. You may have some damage to your piston, valve, valve
seat, rocker, and cam. I suggest a complete inspection and teardown.
Andy
----- Original Message -----
From: "Daniel Neuman" <neuman@radonc17.ucsf.edu>
To: <datsun-roadsters@autox.team.net>
Sent: Sunday, November 21, 2004 9:07 PM
Subject: Checked the bad cylinder and.... HELP!?!?!?
> Hello All,
> Got the okay from SWMBO to spend the afternoon checking the car out.
> I pulled the spark plugs first and they all looked good maybe like I'm
> running a little rich. Then I popped the valve cover and found this....
> www.madmadscientist.com/intakevalve.jpg
>
> This was not what I was expecting to see... The rocker arm/follower for
the
> intake valve on #2 was sitting off to the side!?!?!?!?!!?!? The little
round
> slotted disk that sits on top of the valve and keeps the follower in place
> was missing?? I looked all around the head? Where could it of gone? I
> peeked in thru the spark plug hole and saw a piece of something sticking
> out. It looks like that slotted disk thing (what the hell is it called
> anyways??) somehow worked its way down and is caught by the intake valve.
I
> could move the piece a little bit but I can not pull it out. I tried to
> compress the valve spring by turning over the engine(by hand) hoping the
> thing would drop out so I could grab it with a magnet but no luck. I
think
> I just managed to rotate it around and I can not see it anymore.
> But if you look at the picture the valve stem is lower than the intake
valve
> next to it so I think it must be stuck in their somewhere.
> What do I do know??
> Should I pull the head off and look around?
> From the sparkplug hole I can see some small marks/gouges on the piston
top
> from my piece of mystery metal. They are not big but how bad can they be
> and not require a new piston??
> Before this fateful ride there were no weird noises when I started the car
> up and it idled and ran fan. It seems like my valve clearances would have
> to be WAAAY out for that slotted disk thing to get away from the follower?
> I was revving the engine pretty high just before it happened would valve
> float of done this? I have a 6000rpm limit chip in it though
> Is there any hope that I can still fix this cheaply? Like pull the head
> gently buff out the gouges in the piston and reassemble? The valve seat
is
> probably tore up?
>
> Help!!!
> Daniel Neuman
> Oakland CA
> 69 2000
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