Ported Cylinder Piston
Cr125 with cylinder scratch.?
I have a cr125 from 2001, in good condition, running with its 5th piston in now (A). The cylinder has a shined region running from the top of the exhaust port to the top of the cylinder. You cant feel it when u run your fingernail over it, but its shiny with no cross-hatch like the rest of the cylinder. do you think its possible to hone it and use the B piston or will I go through the Nicasil coating?
the cooling system is fine, im not eating up rings or pistons. just uniform wear. im supposed to change the piston every 22.5 hours of operation. the jetting is spot on, as well as the timing. basics are covered as im a mechanical engineer, i just was looking for someone with experience with this this bike or situation.
sleeving reduces thermal conduction between your cylinder liner and cooling jacket and your piston will run a bit hotter just FYI..
Have you checked your compression with a gauge?
Are you burning up rings quicker than usual?
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Wiseco PK Piston Kit $221.15 ” 13.1:1 Compression, Skirt Coated, Gas Ported Contain all the necessary components for overboring or rebuilding your top end Cylinder sleeves must be purchased separately Included Items (1) W6282 topp” |
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Wiseco Piston Assembly 4858M07700 $170.26 ” Wiseco race only forged pistons are superior in strength and design 13.25:1 compression – light weight, gas ported, ans skirt coated Nikasil Bore-Cylinder sleeving or replating required for oversizes We carry the full” |
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Piston Cylinder Plunger Pin Piston Cylinder Plunger Pin $62.5 PISTON CYLINDER PLUNGER PIN Mfg: Benelli |
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Wiseco Piston Assembly 4858M07900 $149.99 ” Wiseco race only forged pistons are superior in strength and design 13.7:1 compression – 2 rings, gas ported, and skirt coated Nikasil Bore-Cylinder sleeving or replating required for oversizes We carry the full line oo” |
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M14/M1a Gas Piston & Cylinder M14/M1a Gas Piston $59.99 Precision machined gas piston and cylinder are built from exceptionally hard 420 stainless steel for reliable cycling and extended service life. Double heat-treated cryogenic surface provides increased protection against burnt-in powder fouling corrosion and excessive heat build-up. Chrome surface on piston helps prevent wear of the push grooves for more consistent gas pressure and reduce gas cylinder cleanings. Black Parkerized finish on the gas cylinder improve durability. Will not fit SOCOM configured rifles. Mfg: Smith Enterprise SPECS: 420 stainless steel. Gas Cylinder – Black Parkerized finish. 3.95” (10cm) long x .657” (1.7cm) diameter. 3.9 oz. (111g) wt. Gas Piston – Chrome polished finish. 3.620” (9.2cm) long x .497” (1.3cm) diameter. 1.7 oz. (48.2g) wt. |
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M14/M1a Gas Piston & Cylinder M14/M1a Gas Cylinder $129.99 Precision machined gas piston and cylinder are built from exceptionally hard 420 stainless steel for reliable cycling and extended service life. Double heat-treated cryogenic surface provides increased protection against burnt-in powder fouling corrosion and excessive heat build-up. Chrome surface on piston helps prevent wear of the push grooves for more consistent gas pressure and reduce gas cylinder cleanings. Black Parkerized finish on the gas cylinder improve durability. Will not fit SOCOM configured rifles. Mfg: Smith Enterprise SPECS: 420 stainless steel. Gas Cylinder – Black Parkerized finish. 3.95” (10cm) long x .657” (1.7cm) diameter. 3.9 oz. (111g) wt. Gas Piston – Chrome polished finish. 3.620” (9.2cm) long x .497” (1.3cm) diameter. 1.7 oz. (48.2g) wt. |
