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sb64

Oversizing by .010"

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sb64

Sometime soon when I rebuild my 23D 9hp, I was planning on getting standard sized rings and call it good. But I've been noticing that a lot of people go .010" over. Do you guys need to hone, or is there enough worn down that you don't have to?

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Brettw

If you go .010 over, you will likely have to bore it to properly do this. The 10 over is only needed if you are out of spec. You may get by with standard rings and a honing, depending upon the cylinder wear and condition. I do not think you want to buy 10 over rings and then just hone, and then file the end gap to the proper gap. Even if there is that much wear, which I would doubt, there is taper to the cylinder that occurs and out of round with that kind of wear.

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robob

If the engine isn't burning oil you can probably just re ring it

to over size to ten over you'll need a ten over piston and ring set

if available.to hone to ten over you'll need a calibrated sizing

hone (very expensive)if you do need to re bore you're better off stripping the block and having it done at a machine shop i had a model 19 7 hp done for $ 70.00.

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