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Makotosun

Piston critique

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Replied by darinm on topic Piston critique

What size ball hone would you suggest for the 175cc models?
1972 Yamaha CT2 175
1972 Suzuki TS185 Sierra
2000 Suzuki RM100
2003 BMW F650GS
2009 Yamaha WR250R
2013 Yamaha XT250
17 Jul 2020 12:22 #11

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  • yamahahaha
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Replied by yamahahaha on topic Piston critique

That's what I'd still like to know
17 Jul 2020 14:53 #12

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Replied by RT360Fan on topic Piston critique

Ball hones come in many different sizes, get the one that covers the std. bore size. If I remember correctly, Eric Gorr recommends aluminum oxide in either 240 or 320 grit.

For example; if your bore size is 66mm get the ball hone that covers 65-67mm.
The following user(s) Liked this Post: MarkT, Bigdog302, yamahahaha, darinm
Last edit: 17 Jul 2020 15:01 by RT360Fan.
17 Jul 2020 15:00 #13

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