Reply To: Installing pistons in Merc 110 9.8 hp

[billw]

When you say, “I have a Merc ring compressor,” what exactly do you mean? The true Mercury built ring compressors for a 9.8 should be opposed finger-like devices, maybe 8″ long. You would need two to make quick work of a 9.8. You COULD do it with only one; but it’s harder. If you DO have these compressors, keeping the crank straight, square and level as it drops down is key. Also, a generous amount of two-stroke oil. The compressors look like this:

https://www.ebay.com/itm/Vintage-Kiekhaefer-Mercury-Outboard-Motor-Piston-Ring-Compressor-Tool-Set-1950s/254195519774?epid=25030199583&hash=item3b2f3bd11e:g:GngAAOSwiolchT1g

Long live American manufacturing!