... and I would add that if they are original pistons, that the ring
lands are worn beyond use. Given your situation, I think new piston
would be a better bet. Realistically, don't think you can do either
without having the ridge at the top of the bore removed or even that
cylinder wear will allow you to use the same diameter that you have
now. End gap on the rings on a 1098 is .012 -.028 inches. More than
that and you'll still have problems.
Personally, I have never removed pistons from an original engine that
were useable.
Gerard
At 9:39 AM -0600 3/15/04, Peter C. wrote:
>Phil,
> IF the pistons are original in a 40 year old engine, they
>would be the 4-ring variety. The 5 ring were replacement pistons,
>the 5th ring being below the wrist pin. But, order the 5 ring set as
>it has only the extra oil rings, the other rings being the same
>between the sets.
> It's a BIG IF, that everything is standard, though.
>Peter C
>====
>At 08:57 AM 3/15/2004, Phil Profili wrote:
>>I have a 1098 engine, with the 10CC prefix. Is that the determining
>>factor on whether my pistons are the 4 or the 5 ring type?
>>
>>The parts suppliers list both 4 and 5 ring sets for the 1098, but
>>give no further details.
>>
>>I'd like to have the rings on hand when I remove the pistons, as my
>>Sprite is my only (working) car at the moment, so pulling the
>>pistons to look at them is not an option.
>>
>>Thanks in advance,
>>
>>Phil
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