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Honing
Sept 20, 2014 23:02:24 GMT -5
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Post by Zippy77 on Sept 20, 2014 23:02:24 GMT -5
Hey can u tell me which grade of sand paper I would use to hone my cylinder which seized ?? As It's rough in a couple spot
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Honing
Sept 21, 2014 0:42:01 GMT -5
Post by niz76 on Sept 21, 2014 0:42:01 GMT -5
I used 220 grit.
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Sept 21, 2014 2:39:36 GMT -5
I use 400 whit some WD-40 on it.
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Honing
Sept 21, 2014 5:40:29 GMT -5
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Post by Clank on Sept 21, 2014 5:40:29 GMT -5
NOOO!! Don't use anything below at last 1000grit. It would be best to use kroceous cloth. (check spelling). :warning:
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Post by Corrosion on Sept 21, 2014 8:45:16 GMT -5
NOOO!! Don't use anything below at last 1000grit. It would be best to use kroceous cloth. (check spelling). :warning: 1000 grit you kidding! you would be polishing the cylinder wall's. You want to break the Glaze, not install it. The recommended ball hone roughness is 240 AO for Nikasil & 320 SC for Iron. I prefer the 320 on both kits. You only make compression from the top of the exhaust port up. So just clean up the roughness on the lower portion, to try to keep the taper to a minimum. A Ball hone is the way to go. But many a kit had been done with paper. You want a cross hatch circular pattern, not up and down.
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Honing
Sept 22, 2014 1:15:05 GMT -5
via mobile
Post by Clank on Sept 22, 2014 1:15:05 GMT -5
NOOO!! Don't use anything below at last 1000grit. It would be best to use kroceous cloth. (check spelling). 1000 grit you kidding! you would be polishing the cylinder wall's. You want to break the Glaze, not install it. The recommended ball hone roughness is 240 AO for Nikasil & 320 SC for Iron. I prefer the 320 on both kits. You only make compression from the top of the exhaust port up. So just clean up the roughness on the lower portion, to try to keep the taper to a minimum. A Ball hone is the way to go. But many a kit had been done with paper. You want a cross hatch circular pattern, not up and down. That's a new one on me. Apparently 2 stroke motors have some really big tolerances. I've rebuilt & custom built several Toyota & Chevy engines and have never heard of using anything close to 240 grit. I always used a stone & crokest clothe. Guess ya learn sumtin everyday. I've gotta get my hands on a 2 stroke motor and tear it apart to see what the hell it really is..
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Post by Corrosion on Sept 22, 2014 16:19:01 GMT -5
After you see a 2-T Cylinder. You will grasp the difference. You will see why the Ball hone's work so well, They go into the ports and de-burr and chamfer the ports. The 240 is more for the hard chrome kits, But Stage 6 looks like they use it, on there Street Race kit's. The 320 is a better choice IMO. Here is a great Resource for information on Hone choices and the like. Got decent prices too. www.enginehones.com/technical.html
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