The Perfect Corvair Carburetor

Update by Tim Suddard to the Chevrolet Corvair Monza Spyder project car
Dec 12, 2011

This is where the jets are located on a Weber DCOE. They are simple to get at and simple to change.

The emulsion tube is the long jet-like device in the center. We changed to an F16 that had more holes in the bottom, which lets more fuel into the engine at lower rpm.

These changes really woke the car up and eliminated the dead spot completely.

With our Shelby project about done, we are turning our attention back to our 1963 Chevrolet Corvair Monza Spyder and finishing up some details. In an earlier update, we changed the stock carburetor to a Weber DCOE 40.

We then sent the carburetor to Warren Leveque, a long time Corvair racer and tuner. He has experience in splitting the Weber carb so one barrel acts as a primary and the other as a secondary. This change helps deliver fuel more progressively to the turbocharged engine.

The jetting was close, but still not right. There was a definite dead spot, just off throttle, when you were moving from the idle and progression jet to the main jet. We switched to a F16 emulsion tube and also to a larger main jet, bumping up from a 130 main to a 150. These changes really woke the car up and eliminated the dead spot completely.

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Comments

hrjay
8/13/12 5:19 p.m.

have had several Corvair's, a 63, two 65's and a 66. needless I don't think much of Nader, hr rigged the so-called Corvair tests and lied about it. I have used Porsche 3bbl Weber carbs on 140hp heads, along with a earson cam and small block roller rockers. another thing that works is using two stock turbos, one on each side, we did this back in the late 60's and got over 250hp on a chassis dyno. also I designed a block to addapet a remote oil cooler and filter, francis dial did the machine work on the original piece, somehow 'eico' wound up marketing it, if u can find one it is worth doing, or contact me and ill tell u how to do it. jsharpe45@gmail.com, nice work by the way, it's nice to see someone restoring these cars.

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