Weber Carbs and Jetting
 

Okay, the engine is done, modified rebuild. Now, questions about the carbs. Running a 2.4 with 2.2S pistons, complete new valves, etc. Webers are 40's and wondering about jetting, so I heard.
I'm a somewhat of a rookie at carbs and have no idea what jetting the carbs mean? I know I don't want to run lean and would rather be on the rich side of the spectrum.
How do I do it? What is a good resource or should I leave this to the professionals? The Webers were rebuilt about a year ago (by a Porsche shop) and have 10 hours of track time on them at the most. I figure if I rebuild a motor, I certainly could handle some carb work.
Thanks, any help is appreciated.:confused:

Knowlege is power. Particularly when it comes to getting the most from your newly rebuilt motor.
If you have the time and inclination to learn about Weber's start with a couple of books offered by out host.
"Original Weber Technical Manual" by Bob Tomlinson (BK-WEBER-CB) and "Haynes Carburetor Manual" (BK-122910AM).
Or Pat Bradens "Weber Carburetors"
For about twenty bucks each you'll learn all you ever want to know.
There is a significant amount of info on this site. Just search "Webers"
If you don't want to wait until you feel your knowlege is sufficient to do it yourself, then it's time to enlist a professional.
The top pro around here, Russ Kelso, takes the car to the dyno shop and after maybe an hour or two on the machine, is able to extract all of the hidden power.
This isn't entirely necessary. Most of the pro's that work with Webers know from experience what works best for each engine configuration.
With a little adjustment and a lot of test driving they can usually dial your Webers in to your satisfaction. Works fine for street use.
For the track, nothing beats a dyno and a Pro.
Have fun,

Doug,
Thanks and your advice is well received.
Don