I posed this question a few months ago and got no response, so I thought I’d ask again. Do you have any information on the 4 barrel intake manifold for the Vega 2.3 4 cylinder. I have 2 of the manifolds but would appreciate any information on how to assemble the throttle linkage. Thank you.
Yes, I can provide information on assembling the throttle linkage for the Offenhauser 4-barrel intake manifold for the Vega 2.3L 4-cylinder engine.
Here’s what you need to know:
1. Linkage Kit and Assembly Overview – Offenhauser’s 4-barrel intake typically mounts the carburetor sideways for better fuel distribution. – The recommended linkage kit comprises a bell crank that mounts to the side of the manifold. If your vehicle originally had mechanical linkage from the firewall, your stock rod will connect to this bell crank. – The kit comes with a short cable that wraps around the corner to the carb lever. – The bell crank has multiple levers/holes, allowing you to connect either a throttle cable or, if needed, a kickdown lever (for automatic transmissions) .
2. Special Note for Cable Linkage (Vega 2.3 often uses cable) – The linkage kit was originally intended for early vehicles with mechanical rod linkage, but if you have a cable throttle, you can still use the bell crank, though some modifications or additional cable anchoring may be required. – If you find it easier, you can rotate the carburetor 90 degrees front-to-back. Offenhauser sells a special adapter plate (part 4006-5170-90) that allows you to do this, so you can anchor your cable to the original carb lever. This can simplify cable and kickdown linkage routing .
3. Assembly Steps (General Guidance) – Mount the carburetor (sideways or front-to-back depending on your chosen adapter/plate). – Attach the bell crank to the manifold using the provided stud into the drilled boss on the side. – Route the provided short throttle cable from the bell crank, around the corner, and to your carb linkage. – For cable setups: You may need to fabricate or adapt a bracket to secure the cable housing appropriately. – If you’re using a kickdown for an automatic, the bell crank has multiple positions to allow attachment.
4. Additional Tips – If the kickdown arm on your carburetor hits the manifold, you may need to trim the arm or use a one-inch four-hole spacer. – The linkage kit isn’t specifically designed for later cable setups, so some engineering or customization may be required for a perfect fit. – Always ensure the linkage moves smoothly through its range and does not bind at any point.
Summary: The throttle linkage for your Vega 2.3 4-barrel intake should use the bell crank and cable included in the linkage kit, with cable adaptation if needed. If further simplification is required, consider using the adapter plate to rotate the carb so the throttle lever faces the firewall, allowing a more straightforward cable connection. Some custom bracket fabrication may be needed depending on your exact setup .