Hello, I have a 1995 sea Rayder F14 with the mercury (force) 120hp motor. I was having a hard time getting on a plane so I traced it down to loss of power and found that I had 0 compression on number 4 cylinder, after tear down I found that the number 4 cylinder piston was destroyed.
It had a hole in the piston from what appears to me is someone put too large of a spark plug into it and when. Fired over broke the spark plug and destroyed and ate away at the piston, I bored and honed it over .020 and ordered a new piston and hope it will work the cylinder walls were not bad to my surprise. But the problem i have is when I ordered the piston and done my research (what I could find) all the pistons I found did not have the 2 holes on the side of the piston like the one I removed. They were machined holes in the side about the size of a 1$ (us currency coin) and the one I ordered does not, upon checking I don’t believe it would cause any problems because when I turn the motor by hand the holes pass over the exhaust ports and intake ports on the cylinder walls but also the piston sets back far enough for the whole piston to pass over these said holes in the cylinder walls. But that’s why I am here. Would this cause a problem? Also I have a machine shop I can put the holes in the 2 pistons nearly perfect to original.
What do you guys recommend? Any help would be great.
Pictures below of old and new. My piston codes are 700834800A I found one with the holes but did not come with a connecting rod.
It had a hole in the piston from what appears to me is someone put too large of a spark plug into it and when. Fired over broke the spark plug and destroyed and ate away at the piston, I bored and honed it over .020 and ordered a new piston and hope it will work the cylinder walls were not bad to my surprise. But the problem i have is when I ordered the piston and done my research (what I could find) all the pistons I found did not have the 2 holes on the side of the piston like the one I removed. They were machined holes in the side about the size of a 1$ (us currency coin) and the one I ordered does not, upon checking I don’t believe it would cause any problems because when I turn the motor by hand the holes pass over the exhaust ports and intake ports on the cylinder walls but also the piston sets back far enough for the whole piston to pass over these said holes in the cylinder walls. But that’s why I am here. Would this cause a problem? Also I have a machine shop I can put the holes in the 2 pistons nearly perfect to original.
What do you guys recommend? Any help would be great.
Pictures below of old and new. My piston codes are 700834800A I found one with the holes but did not come with a connecting rod.