Dual Port Intake Boot Clamp Set, Set of 4

OVERVIEW

In the high-performance world of air-cooled Volkswagen engines, maintaining a vacuum-tight seal is the difference between a smooth-idling machine and a frustratingly erratic runner. These Latest Rage Dual Port Intake Boot Clamps are engineered specifically to eliminate the notorious air leaks that plague the dual-port induction system. When your engine experiences a leak at the intake boot, it introduces unmetered air into the combustion chamber, leading to a lean condition that causes high cylinder head temperatures, popping on deceleration, and a rough idle. This set of four high-quality clamps provides the uniform, 360-degree compression necessary to secure your urethane or rubber intake boots firmly against the center manifold and the aluminum end castings, ensuring every bit of your fuel-air mixture reaches the valves exactly as intended.

What sets this specific kit apart is the precision-engineered staggered sizing, a detail often overlooked by generic hardware store alternatives. A standard 1600cc dual-port intake manifold requires different diameters for the inner and outer connections to account for the slight variations in the casting and tubing thickness. This set includes two 2-inch clamps and two 1 11/16-inch clamps, providing an exact fit for the standard VW geometry. Constructed from durable materials designed to withstand the intense heat soak of the engine compartment, these 5/16-inch wide clamps offer a low-profile installation that won''t interfere with your throttle linkage or alternator stand. Whether you are performing a routine tune-up or building a fresh 1776cc street sleeper, these clamps are the professional choice for securing your dual-port intake path.

FITMENT

• Volkswagen Beetle: 1971-1977 (Dual Port 1600cc engines)
• Volkswagen Super Beetle: 1971-1979 (Dual Port 1600cc engines)
• Volkswagen Karmann Ghia: 1971-1974 (Dual Port 1600cc engines)
• Volkswagen Bus / Type 2: 1971 (Only year for the Dual Port 1600cc upright engine)
• Volkswagen Thing / Type 181: 1973-1974 (Dual Port 1600cc engines)
• Custom Applications: Any air-cooled VW engine utilizing standard dual-port end castings and a center section manifold.

SPECS

• Manufacturer: Latest Rage
• Part Number: 1567-50
• Application: Dual Port Intake Manifold Boots
• Material: High-Strength Corrosion-Resistant Steel
• Clamp Width: 5/16 Inches
• Large Clamp Diameter: 2 Inches (Quantity 2 included)
• Small Clamp Diameter: 1 11/16 Inches (Quantity 2 included)
• Adjustment Type: Worm Gear Drive
• Total Quantity: 4 Clamps per Set

PRO TIPS

Tip 1: Proper Orientation and Staggered Placement

When installing these clamps, it is critical to remember that the diameters are not identical. The larger 2-inch clamps are typically used on the side of the boot that slides over the intake end castings, while the smaller 1 11/16-inch clamps secure the boot to the center manifold section. Before tightening, rotate the clamps so that the worm gear housings are easily accessible with a long screwdriver or nut driver, but ensure they do not rub against the fan shroud or the alternator/generator. Positioning the screws facing toward the front of the car usually allows for the easiest future adjustments without having to remove the carburetor.

Tip 2: Avoid Over-Tightening Urethane Boots

If you are using high-performance urethane intake boots, be careful not to over-torque these clamps. Urethane is less compressible than traditional rubber; if you tighten the clamp too aggressively, you can actually "pinch" the boot or cause it to migrate off the manifold flange. Tighten the clamp until it is snug and the boot cannot be rotated by hand, then give it one additional quarter-turn. This ensures a vacuum seal without compromising the structural integrity of the boot material or stripping the worm gear on the clamp.

Tip 3: The "Leak Test" Post-Installation

After installing your new clamps and starting the engine, always perform a vacuum leak test. While the engine is idling, lightly spray a small amount of carburetor cleaner or unlit propane around the edges of the intake boots. If the engine RPM changes or stumbles, it indicates that air is still being sucked in past the seal. If this happens, loosen the clamp, reposition the boot to ensure it is fully seated on the manifold lip, and re-tighten. Achieving a perfect seal here is the easiest way to improve throttle response and prevent the dreaded "flat spot" during acceleration.