1996 Merc 200hp piston

Mettaree

Petty Officer 1st Class
Joined
May 17, 2003
Messages
292
Port middle piston - compression ring rotated, snagged exhaust port, ripped upper lip from exhaust side of piston. Cyl. walls OK , no gouges some plating on walls from piston - should hone OK<br />Replacement piston: Cast or forged ???<br />Any info appreciated. <br />Thanks
 

Kenny Bush

Chief Petty Officer
Joined
Mar 24, 2002
Messages
564
Re: 1996 Merc 200hp piston

That be cast.... Get you a replacement piston(with rings, pin, and new clips too) from mercury. They got it all in one part number. I have tried singles from other manufacturers but they have rings seperate and it gets complicated and expensive. I use muratic acid dabbed on a rag to wipe off the aluminum, and for the bigger chunks, I have a cheap 3 shoed hone that I spin in the cylinder with oil, and it only take a couple of minutes with lots of oil.....
 

Mettaree

Petty Officer 1st Class
Joined
May 17, 2003
Messages
292
Re: 1996 Merc 200hp piston

Thanks BushCat. Going to rering all 6 while have it tore down.
 
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