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Thread: Differences between 120SF and 120FZ
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Old 07-03-2005 | 09:27 AM
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Dave Shadel
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From: Gardnerville, NV
Default RE: Differences between 120SF and 120FZ
Both are great engines, but the FZ will produce about 15% more power due to it's bigger valves and difference in the induction system.

The FZ also has the idle needle adjustment which helps in the setup.

Good Luck!
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