Question about 2003 KTM EXC 125

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Power I wanna know how to get the best out my 2004 125 its been ported&polished

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Pro-cfull exhaustv-force3 reeds re jetted, mooseracing bars an knuckle busters an new forks wat else cood i do to this thing,Maybe a flywheel,that would make the power more usable! and get it jeted right!,,,

Posted on Nov 10, 2008


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Best carbs to increase power would 42 or pos 44 from gsxr models and how hard to set up?suzuki RF900RV

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Polish and port

Take some duct tape and put it around the shape of the new port opening. Now put on a second layer of duct tape. This does two things. First it outlines the size and shape of the revised port, and second when the rotary grinder skips out of the port, (as it is going to do a bunch of times), the grinder bit won't nick up the cylinder wall.

The only polishing needed is on the face of the new port area. Give the burned gas a smooth exit into the exhaust pipe. Don't go too extreme on the changes. Too much and you loose performance. This is the voice of experience talking.

Please rate this answer. Thanks!

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Regular grinder and die grinder difference

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