Joe,
I just discovered the same on my followers yesterday when I removed them from
my 3000 head. Some were fine, others pitted. A couple badly pitted. I was
wondering over night if perhaps it was tied to either exhaust or inlet valves,
or was just random. Haven't checked that out yet this morning (I numbered them
all when they came out). I am now worried that the cam lobes are likewise
worn, and I need to go check.
Is there a tendency for exhaust valve cam lobes and followers to wear faster
than inlet? Or vise versa? Or, should there be even wear - to no wear? Nice
and smooth. Within some mileage expectation.
Don't know how many miles are on the engine as the car is somewhat new to me.
But, it is not more than about 30k miles since the last rebuilt so the wear
seems a bit unusual. Unless, as you mention, the cam was badly ground.
In any event, I have new followers and a new cam sitting on the bench, so away
I go.
Regards,
Dave
-----Original Message-----
From: sebring@illawarra.hotkey.net.au
To: healeys@autox.team.net
Sent: Sun, 13 May 2007 4:11 AM
Subject: Valve job and Cam Complications
I was forced to remove my 3000 head due to a blown head gasket.
While it was off I set up a dial indicator on top of a pushrod and for
each lobe I set it at the zero lift or lowest position. I rotated the
crank and cam and measured the actual lift of each lobe.
The result was quite a variation at each lobe which I read as uneven
wear on each one.
I then pulled the followers and discovered some were heavily pitted.
All of the above made me believe the non-standard cam had been badly
ground or unacceptably worn or both.
Net result a fresh cam grind on a spare stock cam, new followers and
finally a new head gasket .
At the moment it is all disassembled in the garage (shop)
Regards
Joe
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