Alex,
No idea on the pistons but maybe a leak down test is the best way to
determine why #3 is still low compression. I think Randall may have hit
it with a broken ring unless you have a crack in the head.
Bob
On 12/11/2011 12:02 PM, Alex wrote:
> Hi Randall,
> First off.....I gave bad info on the proud........3 were .006" and 1
> was .0055.
>
> Reassembled and checked compression. No change.........
>
> Pulled exhaust valve in the cylinder in question and the one next to
> it and both looked the same.
>
> Rechecked flatness of head and deck with a straight edge and feeler
> gauges and could not get a .001" feeler under the straight edge.
>
> Looking like rings at this point.
>
> Did determine that the engine has 86mm pistons.... with the following
> info on the top of the pistons.....
>
> BOTT-OC45 RA5228 STD.
>
> Any info on these pistons as far as 3 or 4 ring pistons?
>
> Alex
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