I have a year 2000 RD 07a that has a hairline fissure in the engine case. I am looking for an engine. I just wondered why the engine code states rd04 while the frame is RD07. Are the crank cases the same on both models?
Thanks for the info. Sadly, very sure. I thought oil was coming from the clutch gasket cover just below, changed that but no...oil leaks pretty badly when under pressure. It seems to be a stress crack coming from the front mount point. Done more than 100, 000 and often two up with luggage. I vainly tried a fancy liquid metal thing but no joy of course. Maybe blow back caused it...possible?
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