Today while sanding the alloy out of my cylinder (for those of you who don't know, please don't ask ) I noticed that the rear part of my powervalve (the part where the shaft is) has a crack down through the center. Is that a major issue or something that won't affect anything?
Also, I noticed a very small crack going from one of the intake ports into the angled part of an exhaust port. Same question on that.
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Craig
MC21 SP Rothmans
MC21 R fake Rothmans - track bike
MC21 SE R9N