KTM300 Piston/Rings help

[XT]

1998 KTM300 MXC. I just tore down the top end on 300 to check things out. Everything looks great. I don't have a shop manual so I have a couple of questions.

1. Ring replacement or not? I checked the ring end gap and it is well withen tolerances(.34mm) of .30mm to .40mm. Is there any reason to replace the rings or should I save the new set for later?

2. Piston clearance.......The manual says .06mm. Is that the maximum or minimum. I'm guessing it's the max allowable but doesn't there have to be a minimum also?

Also, could someone tell me what .06mm is converted to inches..my measuring tools are not metric.

Thanks

 

[biglou]

For #2, I come up with .00236 inches, or .0024. Or, .06/25.4 (mm/mm per inch). That sounds about right if I remember what I've read from Eric in the past. Might better get confirmation on that number, however.

 

[biglou]

Divide your SAE measurements by .03937 and that should give you the equivelant metric number in mm's. Example: .002633/.03937 = .06 (mm).