250 Rebuilding KX250

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ossagp

PALMER84ONE:
Send the piston with it, or buy one from them on their order form. That way the jug comes back to piston spec, measure ring gap and assemble.
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Kind of depends on my mood anymore. When I was having cylinders bored or new sleeves put in I always had them fitted for a specific piston. As many pistons as you will usually go through on a single plate job now, makes it pretty much impossible to keep matching the duo.
 
2strokesteve89

2strokesteve89

ossagp:
Kind of depends on my mood anymore. When I was having cylinders bored or new sleeves put in I always had them fitted for a specific piston. As many pistons as you will usually go through on a single plate job now, makes it pretty much impossible to keep matching the duo.
Click to expand...

Yup....on stock bores I don't worry about that. As long as I'm not using Billy Bobs Backwoods just like new Pistons, I've not had a problem yet.
 
Mihylo33

Mihylo33

ossagp:
Kind of depends on my mood anymore. When I was having cylinders bored or new sleeves put in I always had them fitted for a specific piston. As many pistons as you will usually go through on a single plate job now, makes it pretty much impossible to keep matching the duo.
Click to expand...


I just tell the plater to make it to oem specs and then use a wiseco. No problems yet. :thumb:

I use powersealusa.com.
 
PALMER84ONE

PALMER84ONE

ossagp:
Kind of depends on my mood anymore. When I was having cylinders bored or new sleeves put in I always had them fitted for a specific piston. As many pistons as you will usually go through on a single plate job now, makes it pretty much impossible to keep matching the duo.
Click to expand...

Well yah, but the nice thing about it is sending an A sized piston can be replace with the following letters and your guaranteed a good fit through the years, without much skirt slap. But the size difference is minimal, so to each his own, and peace of mind. Especially if it's you personal ride.
 
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