70 BSA B 25 Star discussion forum:

Starfire

Starfire

Paul Kasner said 2003-11-14 00:41

It´s a B25 "STARFIRE" not a "Star". It´s a fine-handling bike with a rorty bark from its hi-comp (10:1) motor. Will run all day at 50mph but above 60mph the crankcase breather system gets into a spot of trouble, especially if using thin oil and she will start to leak the hot oil. Use a good 20w50 multigrade or SAE40 monograde mineral oil.

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