Spiral Adapter
(Weber to 22R Stock Manifold)
LC Engineering's spiral adapter will adapt your Weber carburetor to any stock 22R intake manifold. This adapter will replace the standard Weber adapter that never wants to seal up properly. The unique dyno-proven spiral bore of the LC Engineering adapter causes the incoming air-charge to spin as it passes through the body. This beneficial air charge carries all the way into the combustion chamber which produces a super atomized mixture, which produces gains in mid-range power and overall efficiency. LC Engineering's in-house dyno showed gains of 5 horsepower and 6 Ft-Lbs. of torque! All adapter kits are manufactured from aircraft quality billet 6061-T6 aluminum. CNC-Machined to provide a better gasket seal and less vacuum leaks than the cheap Weber adapter. Each kit comes with all the necessary gaskets, hardware, and precision brackets to maintain proper throttle and cruise control geometry. Kits can be installed in less than one hour, with no drilling or cutting required.
| Note: Images are for illustration purposes only. Images may not represent the product listed. Please contact customer service with any questions or concerns: 1-928-505-2501. |
- 1981-1995 22R 2.4L Engines
To open a printable PDF version of this instruction CLICK HERE
Kit Includes:
- (1) M8-1.25 x 60mm Hex Bolt Linkage Spacer
- (4) M8-1.25 x 40mm Stud Carburetor Mounting
- (1) M8-1.25 x 35mm Hex Bolt Linkage Spacer
- (2) M8-1.25 x 30mm Hex Bolt Manifold To Adapter
- (2) M8-1.25 x 20mm Flat Allen Head Bolt Adapter To Manifold
- (4) M8-1.25 Nylock Nut Carburetor Mounting
- (2) M8 Wave Washer Manifold To Adapter
- (4) M8 Flat Washer Carburetor Mounting
- (4) M6-1.0 x 10mm Socket Head Allen Bolt Adapter Top Plate To Adapter
- (2) LC Pro Spiral Adapter Linkage Spacer Linkage Spacer
- (1) LC Pro Spiral Adapter Base Gasket Between Manifold And Bottom Plate
- (1) LC Pro Spiral Adapter Middle Gasket Between Adapter Plates
- (1) Teflon Carburetor Base Gasket Carburetor Base
- (1) Spiral Adapter Top Plate Top
- (1) Spiral Adapter Bottom Plate Bottom
Installation:
- Disconnecting battery and set the emergency brake.
- Remove air cleaner assembly.
- Remove carburetor and clean gasket surfaces. Do not allow debris to enter the intake plenum! Insert a shop rag, or towel to keep debris from falling into the intake.Be sure to remove rag before installing adapter!
- Install base gasket(#1) and adapter base(#2) to manifold using the hardware provided. Notice in the illustration the orientation of the base plate: the large hole is closest to the cylinder head, allenhead bolts go closest to the head on top, two hex bolts with wave washers thread in from the bottom. Use a small amount of thread locking compound to prevent studs from backing out.
- Install the top plate(#4) and gasket(#3) using the (4) 6mmallen bolts provided.
- Install the four 8mm double-end studs into the top plate. Use a small amount of thread locking compound on the studs.
- Remove throttle cable bell crank assembly (2 bolts)
- Using the spacers provided with the 8mm bolts and flat washers, reinstall the Throttle Cable bell crank assembly. This relocates the height to match the carburetor adapter.
- Install the carburetor with the new gasket (#5) provided with the flat washers and nylock nuts.
- Reconnect all vacuum lines, fuel lines, and linkages that may have been removed.
- Install air cleaner.
- Reconnect battery, start the engine, check for fuel and vacuum leaks.
54 Reviews Hide Reviews Show Reviews
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Excellent
As I made the mistake of ordering something wrong I was able to call in time before they shipped everything out and the staff was understanding and quick to help me change the wrong item and grab the right one. They also shipped everything fairly fast. Customer service is A++ everyone.
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Get one
If you have a weber carb, and the weber adapter, stop, get your wallet and grab this. I have struggled to tune my carb on a brand new engine, for over a year. Replace the weber junk, re-tune your carb, and its pure bliss. Runs and sounds like a wrist watch!
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Part fits great and looks amazing!
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Awesome
Always had a leak in the base gasket. This spacer looks good and is a really good design and there’s no more leaks just like they said. I would buy this if u have a Webber I was having problems with my throttle cable and after adding the spacer it works great. Buy this product if u have the extra money
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Adapter
Extremely well made, fit and finish is perfect, easy to install and looks awesome!
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Pretty sweet and easy
Pretty sweet and easy to install
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Carburetor adapter
Came on time. Box in good condition uppon arrival. Product in good condition uppon arrival. Product exactly as described. Awesome service. Easy transaction. Thank you.
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SPIRAL ADAPTER 1033028
EXCELLENT CUSTOMER SERVICE !! MIKE HELPED ME WITH THE PHONE ORDER ITEM RECEIVED SUPER FAST MUCH APPRECIATED ANOTHER SATISFIED CUSTOMER THANK YOU
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A must have!
Fought the Weber adapter kit and was never able to prevent it from leaking. Installed the spiral adapter kit and ran perfect! No leaks and idles smooth. Highly recommend!