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Post by xl130 on Jun 6, 2020 14:06:53 GMT -5
Has anyone used a cylinder hone to clean up after a scoring?
I have a couple of cylinders that I’d like to try and save. There must be limitations though? Deep scratches are probably beyond repair?
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Post by sweepleader on Jun 7, 2020 6:47:55 GMT -5
The bore is chrome plated, any scratches or honing through the chrome is fatal. The chrome is only a few thousandths of an inch thick but extremely hard. Many times aluminum scuffed off the piston is mistaken for scratching. It can be removed with light abrasion but honing in my view is too aggressive. The hone can remove the chrome thus scrapping an otherwise salvageable cylinder.
There is at least one video on line describing a process that is very good, of course I cannot find it just now, anyone else know where it is? The guy uses Scotch Brite to polish off the aluminum without removing the chrome plating.
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Post by xl130 on Jun 7, 2020 6:59:34 GMT -5
The more I look around the more controversial the topic seems to be. I see that there are many arguments for and against honing the aluminum transfer. Some have also suggested removing with muriatic acid and a q-tip. Others with scouting pads....
I have a 3 stone hone. But have never used it. I’ve been hesitant to try it out based on all the conflicting opinions. It does seem aggressive for sure!
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Post by fossil on Jun 7, 2020 7:57:56 GMT -5
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Post by onlyhomelites on Jun 7, 2020 9:58:31 GMT -5
Now that is cool!
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Post by fossil on Jun 7, 2020 10:38:24 GMT -5
That's Randy in the vids. He farms and woods ports saws for a living. Very sharp guy and a real gentleman to boot.
I've removed aluminum transfer with acid as well.
It works well, is incredibly noxious and will eat any bare aluminum it get's on if it gets beyond the chrome plating in the cylider.
I don't use it anymore. The chromium is very hard.
I have seen vids of guys using a ball hone to clean up a cylinder. I always wondered what that might do to the transfers and exhaust port.
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Post by rowdy235 on Jun 7, 2020 12:51:15 GMT -5
I have seen several different methods to clean up cylinders. The acid is pry the safest for the cylinder but requires a lot of precautions and safety measures that not everybody is comfortable with. I’ve seen the ball hone work well, I’ve usually seen fairly fine ones used and they don’t cause any damage to the ports.
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Post by edju1958 on Jun 7, 2020 13:27:12 GMT -5
I cleaned up a 540 cylinder about a yr.ago using emery cloth.I started out with #120 grit,wrapped it around a 1 3/4 in.PVC pipe,stuck it in the cylinder & started rotating by hand.It took about 10-15 min.& the cylinder cleaned up beautifully.I finished it with a #320 grit.
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Post by sweepleader on Jun 8, 2020 7:29:11 GMT -5
I knew someone would be able to link to that vid, thanks fossil.
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Post by jklw77 on Jun 8, 2020 11:36:02 GMT -5
Howdy all, for what it is worth go to APPLIED INDUSTRIAL TECHNOLOGY , These folks are a great supplier of those hard to find , tools , parts check out there split mandrels , great selection, at a fair price!, thank you for the post fossil that video showed me the light cleaning cylinders in the past www.applied.com/ |
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