max Posted December 4, 2023 Report Share Posted December 4, 2023 (edited) Hi all, I have just purchased a bit of a bitsa Bultaco Pursang that i am going to restore. The motor in it is a 173 prefix (JM-17300036) and when i search on the Cemoto reference page it comes up as a 'MOTOR TRANS TRACK 350'. https://cemoto.tripod.com/bultaco.htm Can anyone tell me more about this motor - as in what model it was built for, what the JM stands for and why the slightly odd non-model specific referenece? Thanks, Max Edited December 4, 2023 by max typos Quote Link to comment Share on other sites More sharing options...
max Posted December 4, 2023 Author Report Share Posted December 4, 2023 37 minutes ago, max said: Hi all, I have just purchased a bit of a bitsa Bultaco Pursang that i am going to restore. The motor in it is a 173 prefix (JM-17300036) and when i search on the Cemoto reference page it comes up as a 'MOTOR TRANS TRACK 350'. https://cemoto.tripod.com/bultaco.htm Can anyone tell me more about this motor - as in what model it was built for, what the JM stands for and why the slightly odd non-model specific referenece? Thanks, Max Please excuse the odd copy at the bottom of my message, won't let me delete it. Quote Link to comment Share on other sites More sharing options...
lorenzo Posted December 5, 2023 Report Share Posted December 5, 2023 "J" identifies it as 325/340 cc (nominally 350, with 60mm. stroke) "M" is simply "motor" / engine (as opposed to "B" bastidor / frame no.) "173" .... I know nothing. Quote Link to comment Share on other sites More sharing options...
max Posted December 6, 2023 Author Report Share Posted December 6, 2023 Thanks Lorenzo. If anyone else knows anything about the 173 'Trans Track' reference that would be great. Thanks, Max Quote Link to comment Share on other sites More sharing options...
model80 Posted January 13 Report Share Posted January 13 (edited) On 12/6/2023 at 10:07 AM, max said: Thanks Lorenzo. If anyone else knows anything about the 173 'Trans Track' reference that would be great. Thanks, Max I have seen the 173 Transtrack listed as a 350 Grasstrack and a 348cc Astro Flatracker engine. In other words it’s quick, real quick! https://cemoto.tripod.com/list.html Edited January 13 by model80 Quote Link to comment Share on other sites More sharing options...
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