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TomO · 03-02-2015, 10:51 AM

I am with the others in saying that the one on the right is an economizer valve. It looks too tall for the 59 and earlier models. Check for interference between the body of the bowl and the threaded portion of the valve. There should be a recess cast into the bowl for the valve and the valve should not touch the body.

The economizer valve need vacuum to close it, it is normally open. In a multi-carb setup, the vacuum supplied to the valve may be too low to keep it closed, giving you a very rich mixture. The rating of the valve should be stamped on the face of the valve, not the side that you show in your last photo.

The spark control valve is used to give ported vacuum to the vacuum advance on the distributor. If you are using the 8BA type distributor, you need the 8BA type carburetor and the spark control valve.

I agree with buying the Daytona Carburetor kits as the parts are very good quality and you can specify the power valve that you need for your application. With their power valve, you should use the gasket with the triangle shaped cutout and tighten it finger tight plus 1/6 turn. Fill the bowl with gas and let it sit over night. If the gas leaks past the gasket, tighten another 1/6 turn and retest. If this does not seal the leak, you need to look at the condition of the carburetor body.

Here is a link that explains the selection of a power valve.

http://forums.holley.com/entry.php?4...r-Valve-Tuning

03-02-2015, 10:51 AM	#16
TomO Senior Member Join Date: May 2010 Posts: 362	Re: Ford 94 equalizer valve I am with the others in saying that the one on the right is an economizer valve. It looks too tall for the 59 and earlier models. Check for interference between the body of the bowl and the threaded portion of the valve. There should be a recess cast into the bowl for the valve and the valve should not touch the body. The economizer valve need vacuum to close it, it is normally open. In a multi-carb setup, the vacuum supplied to the valve may be too low to keep it closed, giving you a very rich mixture. The rating of the valve should be stamped on the face of the valve, not the side that you show in your last photo. The spark control valve is used to give ported vacuum to the vacuum advance on the distributor. If you are using the 8BA type distributor, you need the 8BA type carburetor and the spark control valve. I agree with buying the Daytona Carburetor kits as the parts are very good quality and you can specify the power valve that you need for your application. With their power valve, you should use the gasket with the triangle shaped cutout and tighten it finger tight plus 1/6 turn. Fill the bowl with gas and let it sit over night. If the gas leaks past the gasket, tighten another 1/6 turn and retest. If this does not seal the leak, you need to look at the condition of the carburetor body. Here is a link that explains the selection of a power valve. http://forums.holley.com/entry.php?4...r-Valve-Tuning __________________ TomO Last edited by TomO; 03-02-2015 at 10:56 AM.