Thanks Tom. Of course I'm hoping it's not the cam but it seems like
the lifter is not holding pressure. Hoping for the best. I'm going to
tear it down on Thursday.
Quoting Tom Rightler <bluess...@comcast.net>:
John,
That may be a cam lobe going bad if you continue to turn it and the
tapping keeps coming back.
Tom Rightler
MCC Newsletter Editor
http://www.mdchevelleclub.com
-----Original Message-----
From: chevelle-list-boun...@chevelles.net
[mailto:chevelle-list-boun...@chevelles.net] On Behalf Of John Nasta
Sent: Tuesday, May 24, 2011 4:30 PM
To: chevelle-list@chevelles.net
Subject: Re: [Chevelle-list] SB lifter question
Thanks Chum,
The method of adjusting a quarter turn past the point when the tapping
stops is something I was taught a long time ago and not something I
got from that web page. So, how are they supposed to be adjusted?
Thanks for the tip about checking the lifter to make sure it's rotating.
Amazingly enough, Auto Zone was able to look up a 1958 283. I told the
woman on the phone to assume it was in an Impala or BelAir with a 4bbl.
John
Quoting Chum Nault <c...@jimolsonmotors.com>:
John
The last year for the 283 was 1967, all small block flat lifters are
interchangeable, if you are just looking for a stock hydraulic lifter
any
283, 327 lifter will be the same. The 58 specs you looked up must be
for a
solid lifter, not hydraulic, as the old 1/4 turn past 0 lash was
always the
method for adjusting them.
Be sure to take a good look at the cam surface on the lifters as you
remove
them, be sure that there is not a wear mark from the camshaft on the
lifter
indicating that the lifter is not rotating. This would tell you it is
time
to replace the camshaft also.
We are finding out that our oils today have eliminated a zink additive
that
is needed to lubricate our older flat lifter camshafts and we are
seeing
failures. Every cam manufacture recommends an additive or a high
performance
oil with zink.
Chum Nault
-----Original Message-----
From: chevelle-list-boun...@chevelles.net
[mailto:chevelle-list-boun...@chevelles.net] On Behalf Of John Nasta
Sent: Tuesday, May 24, 2011 2:26 PM
To: chevelle-list@chevelles.net
Subject: [Chevelle-list] SB lifter question
Hi everybody,
Unfortunately I have what seems to be a collapsed lifter in my 69 El
Camino. If I try to adjust it, I can turn it until it stops tapping,
and then when I try to go the additional quarter turn, it starts
tapping again.
My question is, does the year of the block matter, or are all SBC
lifters basically the same? It is a 1958 283 engine block. Most auto
parts store computers only go back to 1968. What was the last year for
the 283?
I need to buy my parts and I want to make sure there aren't any
problems/surprises.
I looked up the 1958 283 engine specs here. It says:
Valve Lift Zero Lash: Intake: .398 Exhaust: .398
http://www.secondchancegarage.com/public/628.cfm
Also my parts list is:
intake gasket set
sillycone
valve cover gasket set
oil & filter
lifter set (may as well change them all)
Am I missing anything?
Thanks,
John Nasta
Thanks
