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Old 10-20-2007, 07:06 AM   #1
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Questions?? What the different between both the O.S

What the different between the OS 12TZ Spec II AL and O.S. 12tz 3 port spec 2 like rpm,torque,hp, and are they good motor
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Old 10-20-2007, 02:20 PM   #2
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can you clarify your question and be more detailed?
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Old 10-27-2007, 05:03 PM   #3
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same engines, the al spec comes with alum cooling head instead of magnesium on spec 2, not sure if it also comes with the ceramic rear bearing as spec 2
but lower price for sure
GoT MuGeN?
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Old 10-29-2007, 11:29 AM   #4
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Everything is the same between the two engines except the head.
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