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Installing Weber Dcoe 45's On My '02


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I have recently purchased a nice set of Weber 45 dcoe carbs, with manifolds, filters linkage etc. To install on my 76 '02, the carbs came off a running '74 '02.


My question to the forum is can anyone point me in the direction of a tutorial for installation of dual side draft carbs, specifically the re-routing of the coolant divider to the heater box, or can I just run the water divider neck on the car and run heater hose to the heater box, or do I need to swap out the water neck with one from a 320?


Is there anything else I need to know about the install?


What type of electronic ignition should I run with this set-up and where is a good place to purchase from?


I need all the help I can get with this.


Please point me in the right direction.



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Excellent link. I used a water neck from a 320i as well as the bypass tube mating the left over stock hose to make the proper bend to the heater hose. Not much to it. Electronic ignition not neccessary, but if the fuel pump causes clearance issues some use a different fuel pump(from a bavaria iirc.) I'm running 2 ITG air filters and can fit the filter with a non-tii brake booster using the jc20 element. Might be a good idea to do a compression test and leak down first. This way if you have low and or uneven compression and valve sealing issues you know what your sync issues might be coming from. I found a down draught carb was able to hide a lot of engine tuning slop which the DCOE's would not tolerate, eventually motivating a rebuild. Certainly a cam enhances the setup which might be a little flat with a stock bump stick. Nothing to be intimidated by, but would do some contemplating before you just throw them on. It can open up a pretty big project creep. Have fun

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