Rapid Tune-Up Tricks For Your Favorite Holley Carb
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This is what the RapidJet metering block and cartridge system look like. The cartridge slips into the metering block from the top and seals with a single Viton O-ring. The Holley main jet screws into the bottom of the cartridge (arrow) and can be quickly changed by yanking the cartridge-no more spilling fuel and removing the fuel bowls. View Related Article
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