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Thumbnail Filmstrip of Hilborn #60 Rotator Spool High Capacity BLOWN ALKY Images
#60 Factory Hilborn rotator spool now discontinued
#60 spool
Has sharp idle ramp for engines with small Nitro. or large blown alky
Provides for more fuel in first 30 degrees of spool rotation.
Engines - 400-600 cu. in. or with blown alky and up to 10% nitro ........