eugheugh Posted July 20, 2009 Share Posted July 20, 2009 Does anyone know if the Villiers 33a 250cc cylinder head works okay for trials?. The plug thread is longer than the 32a from what I can tell and the squish band gives higher compression. Quote Link to comment Share on other sites More sharing options...
eugheugh Posted July 21, 2009 Author Share Posted July 21, 2009 Found out that the 33a is a scrambles head so probably not ideal for trials.. Quote Link to comment Share on other sites More sharing options...
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