<VV> More on piston rings concern or.. improvement ?

[Bernie Livengood]

All types of manufactured rings have less than .100
thousands of movement from position of intallation and
final seat position.  If you had rotational movement
of the ring, they would never seat in and you would
end up with premature ring wearout.     Bernie
--- "D. Monasterio" <dmonasterio at megared.net.mx>
wrote:

>   <<As I understand it, the piston rings (except the
> oil ring) all tend to 
> rotate around the piston in operation because of the
> cross-hatching. This 
> apparently causes no problems.>>
> 
> <<Pinning rings is old technology. I think you are
> wasting your time......>>
> 
> <<Or, would stationary rings eventually make grooves
> in the cylinder 
> walls?>>
> 
>    I don't know and that is why the concerns. By
> yours and others advice, I 
> think pinning the rings is an obsolete idea. So, it
> is better to let them 
> rotate hoping they don't align eventually ? By the
> known installing 
> instructions it seems that they should stay on the
> initial position all the 
> time. It sounds like aligning the squirt holes of
> the pushrods in an upright 
> position, at installing,  if they rotate all the
> time at working.
>      As somebody told many years ago.... each new
> answer lead me to two new 
> questions.   Thanks a lot to all who shared their
> wise advice.
> 
>      Daniel Monasterio
> 
> ----- Original Message ----- 
> From: "Duane, Jim (US SSA)"
> <jim.duane at baesystems.com>
> To: "D. Monasterio" <dmonasterio at megared.net.mx>;
> "virtualvairs" 
> <virtualvairs at corvair.org>
> Sent: Wednesday, July 25, 2007 1:02 PM
> Subject: RE: <VV> More on piston rings concern or..
> improvement ?
> 
> 
> >
> > Hi Daniel.
> >
> > Or, would stationary rings eventually make grooves
> in the cylinder
> > walls?
> >
> > Jim Duane
> > Colonial Corvairs
> > CORSA
> > '66 180 Corsa cvt
> >
> > -----Original Message-----
> > From: virtualvairs-bounces at corvair.org
> > [mailto:virtualvairs-bounces at corvair.org] On
> Behalf Of D. Monasterio
> > Sent: Wednesday, July 25, 2007 1:11 PM
> > To: virtualvairs
> > Subject: <VV> More on piston rings concern or..
> improvement ?
> >
> >    In fact, I am playing with the idea of
> preventing piston rings
> > rotation (on next engine) so, the real concern is:
> Do non rotating rings
> > could make some improvement ?... toughts about ?
> >
> >    Thanks
> >
> >    Daniel Monasterio
> > <<<SNIP>>>
> > 
> 
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