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>"Dan" kc5gxl@pnx.com wrote:
> >
> > I can't say for sure about the triumph cylinder liners, but, I know that
> > with the liners available for VW if a person was to bore the liners to
> > an oversize dimension, the cylinders would burn too hot and cause major
> > problems.
Then Tony Robinson wrote: 
> Dan,
>  Why would you think using VW rings would cause overheating?
>  I rebuilt my 64 TR4 installing new 87 mm pistons but had no rings.
>  I ordered rings three times from Moss and they kept screwing the order
> up, but that is another story.
> TonyR
Gentlemen,
   I think what is being referred to here is that boring a VW cylinder
will reduce the wall thickness to the point of warpage.  This in turn
would increase friction, and as a result, overheat the engine.  
    A former VW Camper owner,
                          JOE IV
                          TR 250
                    WALLINGFORD, CT. USA
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