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Old 08-17-2014, 08:57 AM   #1
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Default Rex usa?

Does the 21 plus 8 use the original block from the 821?
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Old 08-17-2014, 05:06 PM   #2
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Anyone??
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Old 08-19-2014, 05:50 PM   #3
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i think you need to be a little more descriptive... What brand is the engine???
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Old 08-19-2014, 06:13 PM   #4
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I think this new rex engine uses the plus 4 crankcase, where the old 821b used the P5 crankcase.

The 821 was a beast of an engine. Rex should be a great engine as well.
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Old 08-19-2014, 06:18 PM   #5
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Also you might get a more clear answer in the novarossi thread, lots of guru's in there.
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