hitman_leon Posted May 21, 2009 Report Share Posted May 21, 2009 Ive just got another TY175 after 11 years being without, the engine number is odd, its just 3 digits 539, dose anyone know why. It has no following numbers and it has not been re-stamped or messed with the crank case is untouched. Thanks. Quote Link to comment Share on other sites More sharing options...
paul w Posted May 21, 2009 Report Share Posted May 21, 2009 the engine number should be the same as the frame number. Quote Link to comment Share on other sites More sharing options...
andy m Posted May 21, 2009 Report Share Posted May 21, 2009 It is probably a grey import. This is common, if the lines are there as they are through the numbers and just the model number as you have it sounds like a grey import, nothing to worry about. If the cases were changed back in the day there would not be anything on them. Quote Link to comment Share on other sites More sharing options...
feetupfun Posted May 22, 2009 Report Share Posted May 22, 2009 Yamaha engine number prefix 539 is TY125 so yes no problems Quote Link to comment Share on other sites More sharing options...
hitman_leon Posted May 22, 2009 Author Report Share Posted May 22, 2009 Yamaha engine number prefix 539 is TY125 so yes no problems 539 prefix is a 125 crank case? Quote Link to comment Share on other sites More sharing options...
feetupfun Posted May 22, 2009 Report Share Posted May 22, 2009 The model prefix for at least one model Yamaha TY125 is 539. The TY175 and TY125 are based on the same basic bottom end so there shouldn't be a problem if someone has made it into a 175. Quote Link to comment Share on other sites More sharing options...
hitman_leon Posted May 22, 2009 Author Report Share Posted May 22, 2009 Im going head for the shed and have a close look round the bike, only had it delivered yesterday not had too close a look. Im now hoping its a 175 and not 125........... Quote Link to comment Share on other sites More sharing options...
andy m Posted May 22, 2009 Report Share Posted May 22, 2009 The cc's should be on the base of the cylinder 174 or whatever?? A lot of 125s were sold when the learner law changed from 250 to 125, Yamaha had a load to shift early 80s, they may have been greys ?? They were sold with full size speedo and indicators etc etc. Quote Link to comment Share on other sites More sharing options...
ducman Posted May 22, 2009 Report Share Posted May 22, 2009 In our country the 175 was never imported.When you orderd a 175 at Yamaha germany at that time the deliverd you a 125 with all the paperwork and the 175 kit inclusive(Barrel,piston,jets etc). Chrs:Mike Quote Link to comment Share on other sites More sharing options...
hitman_leon Posted May 22, 2009 Author Report Share Posted May 22, 2009 Its 171 so capacity is what it was supposed to be when I got it. Quote Link to comment Share on other sites More sharing options...
kevin j Posted May 22, 2009 Report Share Posted May 22, 2009 On some other motorcycles, replacement cases came blank and the numbers had to be stamped in to match the old. Maybe your case was replaced at some time in the past. Here, dumb or not, the title for road registration goes with engine serial number, not frame number like a car. I asked what happens if the engine is ever changed then it would not match the title: 'gee, would anyone ever do that?' and they had no answer. So not sure if that applies to you. kcj Quote Link to comment Share on other sites More sharing options...
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