[Vwdiesel] Ring Break-In and Oil use... Alien view

[Erik Lane]

Whenever I've taken apart an engine the rings seem to be in
the same spots they were at assembly. Meaning normally
staggered. Of course that's assuming that the assembler
actually took the time to do it right, but when each piston
has the gaps at about the same place for the different
rings it looks like they stayed where they were put -
meaning that from one piston to the next they're the same,
not from one ring to another on the same piston.

Seems I've heard that in extreme cases you can also see
where the metal isn't worn away as much where the gap was
in a worn out engine. But that doesn't make much sense
cause the other compression ring wouldn't have the gap in
the same place.... But I did hear from someone that it
could happen. Haven't ever seen it myself.

I don't know what keeps the rings from rotating. Maybe
there's no force to make them want to rotate?? I'm just
blind guessing.

Erik

--- SLATERSFB at aol.com wrote:

> One thing that defies explanation (especially when
> talking
> to myself ;o) is how hard driving beds the rings in when
> the
> rings are free to rotate? All I can picture is an oval
> rotating inside an oval (I'm trying to think of which of
> my
> previous engines had the alignment pins in the ring
> channels
> that stopped rotation of the rings and so would allow
> true[er] 'bedding in' Maybe reinstalling this item would
> improve both the bedding in and keep gas leakage/blowby
> down
> by maintaining  maximum leakage path....
> Chew on that guys.
>  
>                              ************
> 
> I've seen two stroke engines with ring locater pins. The
> purpose being to keep the ring end from ending up in a
> port. My experience is that rings really don't rotate
> once assembled and seated. I've taken motors apart that I
> had assembled years before. Knowing my own methods, I
> could see that rings were exactly as I had placed them.
> 
> Bob in NY
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> Vwdiesel at vwfans.com
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> 


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