Finally, I found a nice small sub-project I could do in my warm office on my desk. Together with the engine I got a Holley Street Avenger carburator with an electric choke. I asked Holley how I convert it to a mechanical choke and they recommended the Holley 45-225S conversion kit:
https://www.holley.com/products/fuel_systems/carburetor_components/choke_and_vacuum_secondary_components/choke_components/parts/45-225S These bits and pieces come with a description which has a little room for improvements. No pictures, no drawing, nothing:
http://www.holley.com/data/Products/Technical/199R7439rev1.pdf Furthermore, the parts I got where different from the parts the original Holley picture shows above [B)]. I have to say, these Holley guys know how to drive up there customers. I asked for some more detailed installation guide and got really fast the answer "no, sir, nothing available". In the meantime I know why, because writing a detailed description would had shown them that this conversion kit doesn't work.
After asking the vendor the second step is always "google". It shows quite fast that this conversion is nothing people do quite often. But those poor guys how tried had always the same problem as I had "what should I do with these small parts"?
So, to help the next guy here comes my try to figure this conversion. Now, the line for "google":
<font size="4"><b>How to convert a Holley Street Avenger electric choke to a mechanical choke using the Holley 45-225S choke conversion kit?</b></font id="size4">
First, the electric choke must be removed:
The choke vacuum passage must be closed (red arrow). The kit contains a small lead ball which should be driven into the hole. I think using some kind of fibre ribbon is a better solution. The fast idle lever must be removed because it will clash with the choke lever:
Now, you can mount the choke lever stamping. The lever is turned clockwise in order to load the spring. Don't forget the hair pin you got from the electric choke. There is no new hair pin in the conversion kit.
Mount the die cast fast idle cam housing assembly:
After mounting the fast idle lever coming with the conversion kit (forget step 6-8 of the installation instructions) you can see, that this will not work. There is a big gap between the fast idle lever and the drive of the choke lever:
Bend the fast idle lever outwards approx. 5 mm:
The installation instruction describes in step 5 how to mount the choke cable bracket. This is the result:
You have to machine the housing and the cap of the secondary diaphragm cover. I think a better solution without machining is a flipped up mouting of the cable bracket from below:
That's it. I hope these pictures will help someone. Needless to say, that a lot of parts are left over [
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