evansm Posted January 24, 2014 Report Share Posted January 24, 2014 Hi all I am interested in modifying my standard TY250 engine to a 320 I would like to buy a replacement cylinder and head so that I would always have the original parts to fall back on if needed. Would any of the TY twin shock cylinders be ok to use for the conversion? There is a cylinder on ebay at the mo but the guy does'nt know what year bike it came from. From one of the posts it said to use a DT360 piston, I have only looked on ebay but they only look available in the USA. Does anyone know of a supplier in the UK? The Majesty site wants £150 for a piston kit but it looks like I could get a DT360 kit for approx £100 from the USA. On another post one guy asked if he needed to buy the DT360 liner for the barrel but the advice was he didn't need to. Does this mean that the person tasked with fitting a liner would be able to modify something that is readily available? In another post "feetupfun" said that the head would need welding and machining, would you be able to explain this in more detail? I beleive you also need to fit a spacer under the barrel and "Woody" said that this should be approx 2mm. Would this need to be played with or is 2mm a general standard? Does the standard 250 jetting need changing once the modifications are complete? Any help would be appreicated Quote Link to comment Share on other sites More sharing options...
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