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number6

Jawa Engine Short Or Long Stroke

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Have a look on the left side of the crankcases just below the barrel. Assuming you have a laydown type it should be marked with 884 or 889. The 884 is the longstroke model with a bore and stroke stamped on as 85x87 and the 889 is the shortstroke with a bore and stroke of 90x77.6.

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hello thank you for that I have found this number combination of 888-5-261 on left side of engine. Does this mean anything thanks.

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888 is the first of the short strokes. 88mm bore with 81.2mm stroke. Setup properly they are quite a good engine

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