[Shotimes] what size O ring on valve cover bolt?

[clubairth@bellsouth.net]

Ian:
 The O-ring goes under the bolt head on top of the existing rubber biscuit.
I can't find the size but they are small maybe 6 or 7 mm. Search the SHO
Forum to find the size.  I use them and don't have any leaks. Lowes has the
O-rings.
Post the size back if you find out. I need to write it down in my SHO brain
book!
Thanks!
.
.
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> I've heard a few people mention that O rings can be
> used underneath the rubber valve cover grommets as an
> extra seal. I've also been told that powdercoated
> valve covers tend to leak more than painted ones?
>
> Does anyone know what size O ring to use? Are these
> installed between the valve cover and the rubber
> grommet?
>
> Thanks
> Ian