jer Posted January 24, 2008 Report Share Posted January 24, 2008 I've recently bought a 92 250 pinky, the clutch cover is pitted along the bottom edge and has been patched. I used to own a 94 pinky (in 94), it did the same after a couple of years. The reason i've been told is that the magnesium cover slowly dissolves in water. Is it true that earlier, pre pinky monos used aluminium covers rather than magnesium, if so do they fit exactly onto the pinky? Thanks in advance. Quote Link to comment Share on other sites More sharing options...
mollygreen Posted January 24, 2008 Report Share Posted January 24, 2008 I've recently bought a 92 250 pinky, the clutch cover is pitted along the bottom edge and has been patched. I used to own a 94 pinky (in 94), it did the same after a couple of years. The reason i've been told is that the magnesium cover slowly dissolves in water. Is it true that earlier, pre pinky monos used aluminium covers rather than magnesium, if so do they fit exactly onto the pinky? Thanks in advance. No, the earlier mono models did not use aluminium covers. Yamaha haven't used aluminium covers on the TY since their 1974 Twinshock. I had a 1985 mono with exactly the same rotting engine covers on both sides. It is more likely to be electrolysis rather than dissolving in water. I bought new ones. Those magnesium covers are a sh*t idea. Quote Link to comment Share on other sites More sharing options...
yamahaty250xox Posted January 24, 2008 Report Share Posted January 24, 2008 we pluged them up with instant gasket did the job and a lot cheaper Quote Link to comment Share on other sites More sharing options...
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