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rebuilding a 70 hp from 71/72

arild_johannessen

Contributing Member
Hi
Have just got my hands in an old engine that I just finished disassembled.
Need some advice when it comes to clean the carboned pistons,rings are stuck.
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Can I use pistons from a 105 hp,bore size should be the same,but are the
crankshaft and rod bearing the same?
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70hp- piston with three rings
105hp- piston with only two rings* (can theese be used at all in this engine?)
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Any things I should do while the I have the*engine disassembled?
 
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