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i am rebuilding my 01 xcr and putting new pistons in and one cyl has been repaired by us chrome. do i have to hone all three cyls befor i put it back together
 

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i would look at the cross hatch, if it looks good i would not, if it has some glaze looking spots then i would.
 

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cross hatch is what you want. you should also use a flashlight or trouble light and shine in the cylinder. look for flacking or chipping of the nickasil.

technically the cylinders could look perfect and still be out of spec, thats why for the most part i send the cylinder out for a hone and inspection. 15 bucks per cylinder and then we know its good because the professinals looked at it.
 

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Also if you are going to hone them use a ball hone but be very carefull not to flake the chrome/nikasil off around the port edges.
 
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