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Old 04-24-2018, 11:00 AM
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65ShelbyClone 65ShelbyClone is offline
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If the Chinese blower is actually a complete copy of the Japanese blower it imitates, then the rotors probably have some kind of Teflon coating that won't even notice the fuel. My genuine 500cc unit's rotors have some kind of gray coating. Doesn't mean it will stay on the rotors, but the coatings usually fail eventually even in totally dry EFI applications. My biggest concern would be fuel getting into the bearings and lube oil(which is something like $5 per ounce). That leads to shaft seals...

The VW bug crowd seems to like using them for draw-through setups that don't seem to have problems. After looking online, it appears that most blowers just have regular shaft seals on the rotor ends, even the ones designed for draw-through.
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