Hello All  I am in the process of a 750 STOL build...I have picked up a Corvair complete motor with the correct numbers etc and tore it down....I think it took only about 3-4 sizes of wrenches/sockets... those were the good ole days!!

Short of taking the core to one of the building seminars what should I look for or measure to see if its worth using this core for the build

thanks for any input


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Hi John - I would recommend to take that core and visit a corvair college. It is a great setup with lots of other corvair builders and pilots who can help out a lot.

I did mine that way and it's a great experience to know and learn about your own engine.

Check for details of next event on flycorvair.net

- Ramesh 

Obviously look for major damage caused by failure of rotating parts. Crankshaft journals. Rods, the case and cam for uniform wear pattern. Lifter bore damage and loose or sunken valve seats, combustion chambers as well as head gasket area.  Any heat related damage would be concerning.  Once you get that done check the crankshaft journal dimensions to see if it can be polished or if you should use it as a core. If you don't already have a William Wynne conversion manual I would get it and a 1965 corvair chassis manual right away. I'm at about the same point as you just preparing to send my crankshaft out for nitriding.

Charlie Miller

Thanks for the input...sort of what I was thinking and planning to do

I just was wondering if there is anything specific or common to the cores to initially check out



  • Hi Charles,  I would strongly recommend Azalea Aviation lovcated in GA for that “college” or as they call it a workshop since I believe the Azalea design is much more elegant and compact (yes I have a Spyder 120 Hp conversion).  You can ship your parts to Azalea and in November build your engine right at the Azalea workshop.  All parts are new except the refurbished heads, distributor and cam.  The workshop is 3 days and totally hands on and at the end you can run up your engine right then and there. Sincerely, John Minatelli


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