Jscroggins Posted October 12, 2019 Report Share Posted October 12, 2019 Hey, new here. I just picked up a model 85 Alpina 250 and found out the piston was a 76mm. Anybody ever seen this? Seems like a huge jump from 72mm. The piston was cracked when I got it. Anybody know where I can get another one? thanks in advance. 1 Quote Link to comment Share on other sites More sharing options...
johnjsy Posted October 12, 2019 Report Share Posted October 12, 2019 Hullo J, Try France trials Classic, they are on Rheims, east of Paris. I am sure I have seen a 76 mm piston on their lists. This big bore conversion brings the cc up to 272 . Incidentally, the 290 Sherlock is the same 272 cc ! Let us know how you get on. Quote Link to comment Share on other sites More sharing options...
johnjsy Posted October 12, 2019 Report Share Posted October 12, 2019 Predictive text, always good for a laugh ! That should have been Sherco, 1 Quote Link to comment Share on other sites More sharing options...
teamferret Posted October 12, 2019 Report Share Posted October 12, 2019 If you struggle to get anything, the MZ301 is 76mm and has plenty of metal in it so can usually be modified to suit. The genuine ones are really good quality too. Quote Link to comment Share on other sites More sharing options...
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