pfrederi 18,669 #1 Posted December 30, 2020 I have a straight hone but was curious about ball hones. How close do they have to be to the bore size. e.g. K301 is 3.375 bore they seem to b e offered in 1/4" increments do i use 3.25 or 3.5????... 1 Share this post Link to post Share on other sites
adsm08 3,237 #2 Posted December 30, 2020 I'd go over. On a .3.375 bore a 3.25 ball hone may not give you a deep enough scratch, but they usually can flex inward a bit, so a 3.5 should fit in the hole. Remember to oil well. 1 Share this post Link to post Share on other sites
Achto 29,402 #3 Posted December 31, 2020 I agree, I would go with a 3.5" ball hone. 1 Share this post Link to post Share on other sites
richmondred01 2,307 #4 Posted January 5, 2021 (edited) Yep 3.5. A few passes, check, a few more check. No need to be aggressive. Edited January 5, 2021 by richmondred01 1 Share this post Link to post Share on other sites
