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    Piston over bore size needed

    Finally , got hold of a pair of Wiseco 20 thousandths over pistons (3.3325), since these are forged pistons can anyone tell me what I need to have my cylinders bored at? I'm thinking the clearance is less for forged pistons than it is for cast but I don't know what it should be. Anyone know...
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    another bore question for Frank?

    I've got another bore question, for you Frank, or any one else, three actually. Found out I'm going to have to go .020 over on my 50 H.P. but I can't find any .020 over pistons at a price I can afford at the moment. I've found a pretty good deal on some .030 over pistons but was wondering will...
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    Piston to bore tolrence?

    Frank, I need some of your expertise here, I finally got hold of some inside mic's and you were correct. the bore on my 90 model 50 H.P. should be 3.3125, checked mic's for zero and I;m getting 3.3125 top bottom to 3.3165 on on the cross on one cylinder and 3.3195 on the cross on the other...
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    50hp piston rings

    Can anyone help me with the OEM part no. for the piston rings, for a Force 50HP, model no. 507x90D. Master Tech is showing bore should be 3.375 for 1990 model but my calipers, are showing I,ve got some egging, with the bore running from 3.297 to 3.308 granted I,m only checking the top 3/8", but...
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