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Old 05-06-2017, 08:26 AM   #10
G.M.
Senior Member
 
Join Date: May 2010
Location: Florida and Penna.
Posts: 4,471
Default Re: 1932 to 48 Fuel Pressure

I wanted to add that I later replaced the needle valve in the fuel
return line with a fixed orfice with a .110 hole. If the line is to big
to much fuel is returned and at high speeds the carb runs out of
fuel. The .110 restriction allows me to travel at over 80 MPH if I
want to. Engine don't drop much in RPM's but acts like a governor.
I brazed a 90 degree brass fitting up near the top of the filler pipe
and can look in and see the fuel returning to the tank. The bottle
shown in some of the last posts is a Marvel Mystery oil injection
system if some are wondering what it is. Attached is a picture of
the return line into the filler pipe. What appears to be a second
line is the tail light wires. I think I have more pictures of the pump
with the return line in my other computer at my office will look and
add if I find them. G.M.

Added picture of needle valve in fuel return line before replacing
it with .110 fixed orfice.
Attached Images
File Type: jpg test test.JPG (22.8 KB, 46 views)
File Type: jpg DSCN0038.jpg (42.5 KB, 39 views)
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Last edited by G.M.; 05-06-2017 at 11:01 AM.
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