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Can you post a picture of the top of the piston to see which of the 3 compression ratio they maybe.
 

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For some reason my aging memory is trying to tell me these are for the twin spark version of the later “Nord” engine. I wouldn’t trust this as definitive.
 

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The little bit of research I've done. They look to be the 10.5.1 old style high compression pistons.
 

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Discussion Starter #7
Also,.... have only 2 of these piston & liner/barrel from Federal Mogul...box marked SA2555....also for the 2 liter, NOS, 84mm ,see photos......
$125.00ea or the 2 in the photos for $225.00/pair, plus shipping cost
 

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Discussion Starter #9
The set of 4 ,the first listing in this posting, is sold. The pair (2 pcs. offering) is still available. thanks for looking.
 

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The set of 4 ,the first listing in this posting, is sold. The pair (2 pcs. offering) is still available. thanks for looking.
Do you think you have the other 2 somewhere?
 

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Discussion Starter #11
do not have, I checked the inter-net for FM parts, seems that group has traded hands over the years, Piston suppliers should carry a replacement I would think. I will but some effort into seeing what is out there, even go so far to ask the BB people the same. Maybe someone has a good answer. regards, Brion
 
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