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Old 12-21-2009, 11:24 AM
cobraviper_99 cobraviper_99 is offline
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Join Date: Nov 2003
Location: West Barnstable, MA
Cobra Make, Engine: Shelby CSX4252,aluminum body, 427 side-oiler, Webers
Posts: 138
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Quote:
Originally Posted by fastd View Post
I would love to hear from people who had Webers and switched back to single carbs. Ideally they started with a single carb, went to Webers and then went back to single carb.

Not all carbs are created equal: how do Webers compare to say the Holley 4150 and 4160 series? Other carbs?
This is a very familiar scenario. Someone has an engine that runs fine on a four-barrel, decides to switch to Webers, and then the engine runs lousy. They spend days trying to tune it up but they can never get the engine dialed in. They say, "Everyone is right. Webers are a nightmare. I'm putting the four-barrel back on." The problem many, many times isn't the Webers but the engine.

A four-barrel will run decently with shaky compression, worn valves or valve seats, sloppy timing chain, etc. It's a very forgiving carburetor. Webers are not. They are very much precision instruments and if you have an engine that needs some attention but runs OK with a four-barrel, the Webers will never be happy until the internal issues are addressed. It happened to me and I'm sure many other people.
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