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MR175 Engine Hop Up https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=1565 |
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Author: | mdlafferty [ Sun Sep 09, 2007 5:02 pm ] |
Post subject: | MR175 Engine Hop Up |
Fellow Elsinorites: I need more performance out of the MR175 engine in my 75 CR125 bike. Has anyone out there done any work on their MR175 engine? Sounds crazy but I've grown to love the peaky powerband of the CR125 engine and would like something like that in the MR engine but 40% stonger for the extra 50cc. Cylinder porting will be the key but also carb size, expansion chamber mods and ignition. Any recommendations for who can do this type of porting? Thx. Mark |
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