5 Stars By T.T. on 2016-06-01
One of my favorite engine rebuild tools!
This worked great for honing my 1972 Honda CB350F cylinders. Easy for first timers and cleans up all of the dark spots where the piston rings were stuck and sat for decades. I used a hand drill but you can also use a drill press if you have one. One great tip is to have the drill on at a low speed while you slide the hone tool in and out very swift motion. This will give it the perfect 45Â° cross hatching, otherwise you may get a more acute angle of cross hatching. Don't forget to use lubrication as well, I used Marvel Mystery oil which worked great.
4 Stars By Francis Wong on 2017-07-03
Works Amazingly, but a "One Time Use" Product
Once the right size was ordered, this worked perfectly to hone out the cylinder of my yz85 motor. The results were stunning after carefully following instructions on how to use the attachment. Unfortunately while the cylinder that this was used for is perfect, smooth, and flawless-- the hone cannot be used again. So four stars for kind of a pricey tool that is only for one-time use, but for the difference it makes in polishing and boring out a motor it was worth it!
5 Stars By Quualudes on 2013-08-20
Brilliant for brake/clutch master cylinders!!!
So I have this 1982 Honda Magna I recently acquired which needs some love to get back on the road. Apparently the previous owner dropped the bike while loading it on a trailer, decided not to fix it and let it sit for a few years. The sight glass was busted on the clutch master cylinder so the fluids drained out of the main chamber and after a few years of sitting, the rest of the fluid turned into some kind of green alien substance...
After stripping some screws trying to get the thing took apart, I discovered the piston was quite stuck in the chamber - which required me to drill through the top of the piston, insert a metal screw and pry the b***h out with a crowbar. What I found in the chamber was nothing short of horrific - a nice thick black coating of whatever the brake fluid turned into after all these years. It looked like carbon, and it was impossible to get scrubbed out with brass bore cleaners or soaked out with anything I had available (which is a lot of stuff).
I searched around for potential replacements on eBay, but there was nothing that looked like it would be a 'sure buy' that would work - especially for the money these people were asking. So, I have to make this work...
Eventually I gave up on the fruitless manual labor and tried to find another solution. Stumbled across 'honing engine cylinder' and started looking for really small honing tools (5/8" or 16 mm). Found this, got it today, attached it to my drill, doused the cylinder and this tool with brake fluid for lubrication and let it go to work....
Freaking awesome results!!!! I got the 120 grit one, so once I get the OEM rebuild kit here, I will do a test fit and if things look snug, I will get the 320 grit brush and finish it up.
Very happy to finally be able to move past the roadblock and get onto other stuff on this bike!!!
5 Stars By VT on 2017-04-16
Good hone, convenient ordering
Good hone, convenient ordering, fast 2 day delivery, all at a good price. I have several sizes of these Flex Hones from about 1/4 inch for valve guides to 6 inches for cylinder bores; I believe they are far superior to other types.
4 Stars By Pete H on 2016-05-06
Cleaned up some heavy rust no problem
Had a cylinder that the piston tings had rusted to from sitting outside for so long. This hone took all the rust right off and made the cylinder look real nice. I've never honed a cylinder before but it was easy and turned out great. I can't attest to the longevity of this only because I had used it on 2 cylinders. But for the 2 I did, it worked like a charm.
5 Stars By cyber kid on 2017-07-03
great for the hobby engine builder anyway
does well for anything around a 67mm bore
5 Stars By Wayne B. on 2017-06-02
Great part and even better price no regrets on my choice here
4 Stars By Bob on 2017-08-31
Only had one cylinder to hone and worked fine
4 Stars By David O'Grady on 2016-12-02
worked great, make sure you get the right size for ...
worked great , make sure you get the right size for your bore
5 Stars By Musculr on 2017-08-24
Great brush hone. They make the best.