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Old 10-07-2008, 08:39 PM
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Location: SE Pennsylvania
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Novak sells reconditioned motors where they add the sintered rotor and big bearing to them. I just raced an EX 10.5 with the upgrades in a B4 - really nice and highly recommended (available on the Novak web site). The upgraded 10.5 pulls stronger than the base EX 10.5 and was much like an SS 10.5. Give it a try or see if they have the same refurbished for SS4300. Check the Novak Engine specs page to compare each of the various Novak's for Wattage output and unloaded kv RPM.
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