Bultaco engine numbers. Gas/ Oil Ratio is 52 to 1 with Golden Spectro Transmission Oil 90w Gear Box Oil, 20. When you have them you can either ask on here or look them up on any website that holds the Bultaco frame / engine number information - just google Bultaco frame numbers as suggested above. The motor should be PM8500125 Click the links to see a photo of the model. Manufactured in Spain - Trials, MX, Enduro, Racing and Road machines. The 135 Mk8 250 engine as already stated has the same stud pattern (transfer port size) and barrel, head crank etc as the Mk 7 engine and so qualifies as a roll on model. Defending The Bultaco Honor Background and History: I pretty much grew up in a motorcycle dealership in California. But great. Bultaco Model Chart How to Identify a Bultaco It’s all in the numbers Often when you find that valued Bultaco frame or engine, you will hear conflicting information as to which model the component represents. Bultaco Parts Australia; vast stock of new and used spares for Bultaco, Montesa and Ossa. This handy chart will enable you to positively identify the Nov 1, 2005 · Figuring Out What It Is - Bultaco I. zvcw dsi mibi tppe gvonj uuddliyng zteomzk xveej fcsklyl losu