marleyaurf11 Posted June 29, 2014 Report Share Posted June 29, 2014 Hi, finally got my dad to give me his old bultaco. I'm going to start to restore it but was trying to figure out what exact model and engine it was? The numbers in the motor are JM-18800129 Quote Link to comment Share on other sites More sharing options...
dadof2 Posted June 29, 2014 Report Share Posted June 29, 2014 May be an alpina from about 1975 Quote Link to comment Share on other sites More sharing options...
feetupfun Posted June 29, 2014 Report Share Posted June 29, 2014 that engine number is for a 1976/77 350 Alpina The frame, forks and triple clamps are earlier Sherpa T or Alpina (1972/73?). Front wheel is post 73 Alpina. Tank and seat is 72/73 Alpina. The frame ID number is stamped on the steering head There is some sort of tubular frame in front of the rear wheel that doesn't belong there Quote Link to comment Share on other sites More sharing options...
jc2 Posted June 29, 2014 Report Share Posted June 29, 2014 Looks like it also has a cross-over linkage for the rear brake that's non-original. Earlier (c72/73?) rear wheel too. Quote Link to comment Share on other sites More sharing options...
marleyaurf11 Posted June 30, 2014 Author Report Share Posted June 30, 2014 Thanks for all the replies!! Here is a picture is the serial number on the bike. It is 85 03 042.. So does this mean that the motor and the bike did not come together. Like someone over the years, before my dad got it, must have put a different motor and other items on the bike? Her is a pic Thanks!! Just trying to figure out year and model so when I start tearing it apart to restore, I can order the correct parts! I've been reading a lot lately and if I'm correct, it seems like a lot of these early bultaco parts are kind of interchangeable.... Right? Quote Link to comment Share on other sites More sharing options...
feetupfun Posted June 30, 2014 Report Share Posted June 30, 2014 (edited) That number tells us that the frame is a Model 85 Alpina which was the first 250 Alpina. Here is a photo I took in 1976 of my 1973 model 99 Alpina, which was similar to the M85, but was 325cc Edited July 1, 2014 by feetupfun Quote Link to comment Share on other sites More sharing options...
feetupfun Posted June 30, 2014 Report Share Posted June 30, 2014 (edited) Yes lots of parts are interchangeable but some are not. You just need to tell the people you want to buy parts from which model Bultaco the part is for. If you take decent photos of the bits you are worried about, there are many people on these forums that will be able to identify which model Bultaco it comes from. From what we have seen in your photos it looks like the bike is mostly model 85, but has a later model front wheel and motor. Haven't seen the exhaust yet Edited June 30, 2014 by feetupfun Quote Link to comment Share on other sites More sharing options...
jc2 Posted June 30, 2014 Report Share Posted June 30, 2014 (edited) Dave, I think your memory ain't what it used to be (neither is mine) - the model 85 was the very 1st Alpina from '71, a 250, which was largely a Sherpa T but with larger tank & seat & wider ratio (matador) gearbox. The 1st model 350 Alpina like you had was the M99. Edited June 30, 2014 by jc2 Quote Link to comment Share on other sites More sharing options...
feetupfun Posted July 1, 2014 Report Share Posted July 1, 2014 (edited) Dave, I think your memory ain't what it used to be (neither is mine) - the model 85 was the very 1st Alpina from '71, a 250, which was largely a Sherpa T but with larger tank & seat & wider ratio (matador) gearbox. The 1st model 350 Alpina like you had was the M99.Yes John my memory is definitely going somewhere. Of course you're right, my photo shows my old M99. I just edited the posting Edited July 1, 2014 by feetupfun Quote Link to comment Share on other sites More sharing options...
BigDan Posted September 21, 2022 Report Share Posted September 21, 2022 I hats bultaco frontera I have the engine numbers and frame numbers can anyone tell me the year also it is complete except for the seat it needs restored can you tell me what it’s worth I am selling it if anyone is interested engine # PM15200410 frame# PB15200410 thank you for any help Quote Link to comment Share on other sites More sharing options...
farmer58za Posted September 21, 2022 Report Share Posted September 21, 2022 Hi Big Dan It's a '75-'76 (model 152) Frontera mk. 9 250cc, according to this page:https://cemoto.tripod.com/bultaco.htm Will send a PM Regards Quote Link to comment Share on other sites More sharing options...
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