Thats very interesting. I have a 5200 sitting in the garage and it looks a little smaller than the 32/36 i got, they might be the same since I've never measured them.xctasy":1jbffavg said:I enjoy Real People who do Real Stuff and get there hands dirty! Ryan, great work.
The typical Theoretical Engineer who got his hands dirty is the ex Limey David Vizard. He found that 1.19 vs 1.38 (350 cfm 2bbl vs 500 cfm 2bbl), the kick in was at just 125 hp net at the flywheel. Result? Another 10 hp net. The 1979 2.8 Mustang got given a 1.14 2150 Motorcraft over the 32/36 based Autolite or Motorcraft part numbered 5200. Some where, another 4 hp , depending on what figures you garner.
The average venturi size of a 5200 is exactly 1.01. The reason it gives strange air fuel ratios is the primary and secondary circuits augument air fuel supply. The carb on the 2.8 was well sorted.
My vote is for the old 1.23 with s two stage power valve and you play with the PVCR's with either Bills E string, fuse wire or Sean Murphy style hex plug and fine drill holes.
I can test the 1.23 i currently have on it and see how it does vs the 1.08 i just bought and see how they compare. I'll have the funnel adapter for a bit till i get the 1980 head set up for a direct 2bbl and i won't have to screw with adapters anymore. I'm hoping the 1.08 will do just fine.
Also, side question, if the AF gauge was too close to the manifold, would it give different readings vs being a little further downstream? I was looking at my sensor and noticed its about 10" from the manifold. Is that too close?