Arguably they assist with cooling but I know at least one guy in the US
who has filled his with silicone.
Martin
Mike Bosworth wrote:
>
> Hiya All
>
> Whilst im in there replacing all my hoses etc. With regards to those
> 4" deep holes in the engine casting, in my case full up with
> sand! ...Does anyone know of a good product to fill these up to
> prevent any future damage from water etc, or is this not a good idea??
>
> Regards
>
> Mike
> #2001
> doc403
>
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