For those of you considering webers, I can say it is worth the learning curve. I admit it was hard at first. Then it got harder!!!!!!!! My answer!!!!!!!! Ask a lot of questions and read read read. I spent hours reading the weber manual over and over, Highlighting every thing that I wanted a quick reference for. I broke the weber up in my mind into three sections as the book describes and focused on one area at a time. I read and reread again everything in the book that dealt with each section. As the book says, the floats are the most important. If they are off, everything is off. Don't trust someones work but check yourself! Next was the timing. Check yourself. I had to pull distributor and rotate each direction until I found the exact spot that would work and have full turning range to set degree. Next I checked linkage for exact movement to each carb. Next was to follow instructions for carb sink. Everything is in the book and also discussed in several sections of the book. I followed the book to the letter. It still took a long time, but I was making headway and everything behind me was perfect for that point in the process. I checked and rechecked carb sink then moved on to jets. I already had placed the jets in the weber chosen from engine size using charts provided. I did not have all the jets I wanted, but with webers you can still arrive at the same point or close to, because of the varied other jets and adjustments. I changed my exhaust gaskets to the new aluminum ones. Checked plug wires, rechecked timing, hooked up the LM1 and checked the set up several times in the driveway. Several experimental tries with different jetting helped me further to understand this carb's workings. Each drive I would examine the data on the computer, make adjustments in idle mixture, jetting , air correctors and after the 7th run I hit payday!!!!!!!!!! ALL popping, sneezing, hesitation was gone! The car was a new vehicle and I really mean that. I hit the throttle the car went crazy. POWER POWER POWER!!!!!!!!!!
Like nothing I had ever had before in my car. The tires where screaming and the force of the acceleration pushed me back in the seat. The hole car seemed to rise up andthe back end began to go back and forth with each gear I hit. I finally knew what so many of you already know, these cars will kill you if you are not careful. I still have some fine tuning to do because I see a few more horses I can capture. The truth is, If I can do it You can do it. I am no motor guy but I can read and follow instructions. If any of you were thinking weber take the plunge. I am so happy I did!!!!!!!!!!
I will clean up the cobra and take pictures and post tomorrow if anyone wants to look. My three year reconstruct project is done. I hope you will like what you see. Thanks again for everyone who offered support during this project.
Jim