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tried installing piston today, bent bottom oil ring,not doing something right. Is it possable to over tighten a ring compressor? Video's on utube sure make it look easy, ordered ring.

The new replacement piston ring measurement: top ring .002 2ed ring .002

Thanks some learning going on here. top ring= .043 2ed ring=.022

Not quite sure what you mean, I did install 1 of the new rings and squared it up in the bore using a piston, measured the the gap, it was .010, thought that was good. I have the piston and rod together now using 1 clip, there is no way it could go together using 2. The rod cap has 2 torq #40...

No clip existing, if I look closely I can only see 1 side that has a set for the clip. The original piston and pin pass's through either side and has seats for the clips, like you were saying.

I got the cyc honed and cleaned up. Order gaskets today. I hope I did this right. Still have to lap the valves into the seats. Is there a place I can get the torq spec for the engine ?

I see there is a arrow on the bottom and the top of the piston. I'm not familiar with "MAG markings" , bbut there is a mark in the rod shown in picture at the top, is that it?

model 21B707 type 0453 E1 code 06031ZA update: I got piston out the 2 top rings are broke and came out in pieces. The cyc wall still looks ok. I can also move the piston back and forth on the piston pin, I don't think that's suppose to happen.

I do have a measuring tool, i think im using it right, I placed it at the center of piston sitting level, only at 1 location in the bore. I don't know what the original bore size is are where to look. I do have access to the ball hone you mentioned. I guess my next step is to remove the bottom...

I got the head off today, the gasket did not appear blown but close to it, i could see some black carbon under part of the gasket, also see some scratch marks in the head where son in law removed removed a gasket a few years ago, the ex valve was not stuck, but from the looks might not have...

Need to get the tractor going for this summer, I did a leak down on the eng and air is coming out the exhaust muffler (both valves closed) so i guess the first thing to do is pull the head and take a look at the valve seats. I have a piston and a ring set for this engine also, My question is do...