Quote:
Originally Posted by alanwoodieman
OK tried to read thru to get opions on what limit there is to boring a flatty and got a head ache, Here is my question--have 3 1/16 41 engine with raised intake deck, worn out even further the sleeves. I have a set of 3 3/16 40 over pistons I could use-do you think I will overbore my block to use these pistons. A few years back I had a 40 merc block ( 3 3/16) with large journal crank and it was 40 over and these blocks look the same
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Alan, I think 3-3/16 + .040 will work fine on that 41 engine. I've built alot of those engine by removeing the sleeves and boreing out .045 to 3-3/16. I wouildn't be afraid to go another .040 You stick your finger down the water hole next cly and feel the thickness of those blocks, There really thick. Walt