You might want to do a Google search and read some of the documents on
lead in bearings. I suspect in a few years this will be less of an
issue. Copper-Tin bearings should be as good and perhaps better that
copper/tin/lead. The challenge is that they are more difficult to make.
Tin/Aluminum were the first response to the requirement that cars
manufactured after 2003 have less lead. The more restrictive cutoff
seems to happen in 2010.
I suspect it's more of a volume issue--manufacturers would prefer to do
things in a standardized way, and lead in manufacturing processes leads
to worker liability anyway. The bearings will probably get better as
time goes on. For now, I'm glad for my stash.
-----Original Message-----
From: owner-fot@autox.team.net [mailto:owner-fot@autox.team.net] On
Behalf Of Jack W. Drews
Sent: Thursday, October 05, 2006 4:44 PM
To: FOT@autox.team.net
Subject: [FOT] rod and main bearings
I don't really want to be the one to start the annual rant on engine
bearings, and maybe this has already been answered, but here goes
anyway.
I've used the aluminum bearings from Moss for several years, identified
on the box as COUNTY and have not had any problems whatsoever with them.
However, King advertises heavily, and a couple of the suppliers
advertise that they are the finest and they are tri-metal.
I found a source for King bearings and decided to try them. Printed
right on the box it said they were tri-metal. I installed them today.
In the process I found that the King bearings and the Moss-supplied
bearings had nearly identical stampings on the back. Both said
COUNTY
REGO UK
C438 STD and then two letters, which were different on the old and new
bearings.
I could not detect a difference in appearance, but must admit that I
noticed all this so late in the game that I didn't take a file to one of
the new ones to see if it really was tri metal. With identical stamping
on the back, it doesn't seem likely, does it?
Comments?
uncle jack
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