Ok, we all know what Cam, crank and setup to use for our corvairs. Mark Langford and William Wynne have gone through a lot of trouble doing the R&D for us and I wish to thank them. However when it comes to carburetors for the corvair there is some questions that need answered. The certified carbs are very expensive and hard to find while Harley CVO carbs and Zenith carbs are available and reasonable. So I'm looking hard at the Zenith Carb and what the numbers really mean. On forums the Zenith 1821 carb is being called a number 68 and 267 Here is a chart to show you the size engines for these carbs. Just click on the updraft carb 68 or 267 to see the specs.
http://www.leklein.com/Zenith-Fuel/index.htm Now here is a chart to see how these carburetor numbers are related: http://www.lotus-equip.com/Zenith%20Parts%20Reference.htm The numbers you are after is 13922, 14992, 14995 and 14998 depending on your engine setup and size. These updraft carbs are dirt simple and can be adjusted easily to run your corvair. If you live in the woods like I do then here is the cross reference chart to get a carb from a tractor dealer: http://www.lotus-equip.com/zenith.htm Now here is a dealer like www.greatplains.com <http://www.greatplains.com/> that carries Zenith carbs for aircraft: http://www.hummelengines.com/pricelist.pdf And a small article on carbs that contains good information: http://users.lmi.net/~ryoung/Sonerai/Carbs.html http://clubs.hemmings.com/clubsites/DurANT/Tech/Zenith-updated.PDF These updraft carburetors don't like ram air or high pressure and need to be setup with available carb heat for flight safety. Here is the cheapest I found them: http://clubs.hemmings.com/clubsites/DurANT/Tech/Zenith-updated.PDF I hope this helps out in trying to find a carburetor for your project. David Boyer
