<VV> Re: ENGINE KNOCK NOISE

[Geoffrey A Johnson]

As we well know, the nice thing about a Corvair is the ability to quickly 
access the rod 
caps to inspect them. This is a quick check that should not be too 
discouraging amount of work to a new owner. 
I would suggest pulling the cover and looking.  That way the rods can also 
be inspected to make sure they are right side up.   I would look to what 
was changed recently as a source of the problem.   I have spun/thrown a 
couple of rod bearings on various motors.    It could just be a loose 
clearance that is so 
far holding out, but getting ready to go.      Rods can be so finicky on a 
Corvair.

-Geoff Johnson




On Thu, 7 Sep 2006 N2VZD at aol.com wrote:

> also check all of the upper head studs.  one may have traveled in far  enough
> to touch a rod. that makes a nasty noise that can be felt. if that is the
> case also put a magnetic drain plug in to get the filings out.  i also
> magnetize the dipstick to see anything metal as it crops up.
> is there any shine in the oil when you check it? like metalflakes?   did you
> check oil pressure with a test gauge ? (oil pickup may be loose or bent  up
> during assembly)  i have almost seen it all over the  years....almost.
> regards, tim colson
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