<VV> Rocker Arms
lonwall at corvairunderground.com
Wed Oct 12 14:38:17 EDT 2005
RBK - As far as I know, no reputable Corvair parts vendor sells small
block V-8 rockers to thier customers. The correct Corvair rocker
assemblies have been easily available to everyone - that is until very
recently. The only manufacturer of the correct rockers recently told us
that they were discontinued - but keep in mind that this manufacturer
has done that before with other parts and after a few months brought the
part back. Presently we're surviving off of "old" stock that they have
been locating for us. But....if the rockers really are discontinued,
then that will soon come to an end.
Two points - NO, SBC rockers WILL NOT work in Corvair engines. They are
about 7-8% larger, and the resulting mismatch of geometry will destroy
the ends of your valve stems. While you may not have to use rockers
that are PRECISELY identical to NOS GM, they can't be off by much
without running into serious problems.
Second, there is discussion about using used rockers. Of course this is
done all the time. The only issues here involve the general condition of
the rockers and whether the ball nuts are matched to the rockers. For
those of us who stay on the ground with our cars, these two points are
not a matter of life and death because if you use 100 used rockers with
various degrees of age, wear and mismatched ball nuts you might only end
up with one or two failures.
But for those who fly with our engines it's a very serious problem, and
a risk none of them should take. And that is how this whole donnybrook
about rockers started in the first place - on the Corvair aircraft list.
It's sad that we can now add rocker assemblies to lifters, mechanical
fuel pumps, brake linings and pushrods in the growing list of Corvair
parts that have been hammered by bad information. And, thanks to the
internet, bad information never goes away. Is this good for new Corvair
owners? Is this good for the Corvair hobby? Don't answer - you might be
labeled a "troublemaker". Lon
>First, is there any person or group who is really supporting the SBC rocker arm as a replacement in the Corvair? Please give me those names, especially vendors, so I can avoid them. I don't want to cast aspersions, but only want to avoid a breakdown should I buy from them, believing I am supporting Corvair vendors who deserve our business as well as respect.
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