Cylinder markings

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11/25/2018 4:10 PM

Anyone know who might have ported this cylinder? Its off a 2006 cr250r. If it's any help the bike came from Visalia ca. Thanks. Photo

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11/25/2018 4:11 PM

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11/25/2018 6:49 PM

I believe those markings are oem. Does it have any markings on the outside of the cyl. walls ? How do the ports look ? It will be obvious if someone did any cyl. mods..

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Speak softly and carry a big stick.

11/25/2018 7:33 PM

Here's two other markings that I could find. The ports have definitely been grinded on. The ports are the only thing that have been touched Photo
Photo

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11/25/2018 9:19 PM
Edited Date/Time: 11/25/2018 9:20 PM

Those are OEM engravings. The cylinder and exhaust flange are a matched set thus Honda engraves each piece to make sure they are matched at final assembly.

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11/26/2018 5:51 AM
Edited Date/Time: 11/26/2018 6:40 AM

DynoDan22 wrote:

Those are OEM engravings. The cylinder and exhaust flange are a matched set thus Honda engraves each piece to make sure they are matched at final assembly.

Yup. Those are oem markings engraved as well. It's possible the port work was a homemade job. Can you post pics of the port work ? Does the head look like it's been cut / reshaped ?

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Speak softly and carry a big stick.