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  #1  
Old 06-26-2011, 08:46 PM
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staylor1650 staylor1650 is offline
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Default any suggestions

Well I finally got around to taking the piston out of my 100, only to see the top ring in 3 pieces. So I took it the machine shop only to find that it is a 10hp block with a 12hp piston in it and that the cylinder is egg shaped. It will take approximately another .020" bored out to get it back into shape. My question is should i just have it completely rebuilt and just be done with it or what? All suggestions are welcomed.
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Old 06-26-2011, 09:01 PM
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I would other wise you may being on a big headache later
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Old 06-26-2011, 09:10 PM
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You have plenty of room to still overbore it. K301 blocks have +.030 pistons and it is the same block. Have no fear.
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104 to 127 conversion with dual 6x12s, hydraulics
snow/dirt plow
1200 Quietline 44" mower
QA-36 snow thrower
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  #4  
Old 06-26-2011, 10:17 PM
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ok good i just didn't no if it would be worth it but if it has lasted 40 years already hopefully i can get another 40 years out of it any thing i should have the machinest or me what to check or look at while im there or any reccomendations on doing a complete overall
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not cub but its yellow 62 allis chalmers b-10
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  #5  
Old 06-26-2011, 10:23 PM
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william1041200 william1041200 is offline
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Mine was a K301 block - I bored it to almost a 14hp. I think the bore is 3.410. It is Awesome! The vibration is bad, but its so strong....
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104 to 127 conversion with dual 6x12s, hydraulics
snow/dirt plow
1200 Quietline 44" mower
QA-36 snow thrower
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Old 06-26-2011, 10:26 PM
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Definitely, while that block is stripped - polish the intake and exhaust ports. It doesnt have to be super smooth, but to get the casting lines and ' pits ' out of the ports makes a noticable difference.
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104 to 127 conversion with dual 6x12s, hydraulics
snow/dirt plow
1200 Quietline 44" mower
QA-36 snow thrower
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Old 06-26-2011, 10:46 PM
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William - I was just reading some controversy over polishing the intake port. One argument is that you get better fuel atomization with the rougher intake, as it supposedly creates more turbulence. There was no argument on the exhaust ports, smooth is good there.

I dunno, sounds like a plausible argument...
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Old 06-26-2011, 11:36 PM
Methos Methos is offline
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You could also sleeve it if you wanted it as a K241. Just throwing it out there for kicks.
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