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Title: advise on rebuild Post by: whirligig on April 27, 2013, 12:47:15 pm so do we rebuild the 1903 as was or use 94 mm instead of the 90.5 (if the crank is ok) as if we have to get new it wont cost any more.how will the bigger bore alter the CR and cam ect ,web 86c ,044 cnc heads 10.5 cr 48 idf and 7500 +rpm from old unit.your thoughts please.or a good used case,1 good used cb rod and used good barrell for a budget rebuild.beggin smiley
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