ZENITH REPLACEMENT CARBURETOR INFORMATION

 

 Model 68

 Model 267
 Engine Size  25-170 CID  100-250
 Choke Bore  1.376 inch  1.644 inch

 Throttle Bore
 Zenith Size  SAE Size  Actual Size  Actual Size
 Size 7  7/8"  1.024 inch  N/A
Size  8  1"  1.181 inch  1.181 inch
 Size 9  1 1/8"  N/A  1.297 inch
 Size 10  1 1/4"  N/A  1.417
 Venturi Diameter    14-24 mm  18-30 mm
 Fuel Inlet Fitting  

 1/8"-27 pipe thread

 1/8"-27 pipe thread

 MOUNTING HOLE SPACING
 Size 7  2 1/4 inch  N/A
 Size 8  2 3/8 inch  2 3/8 inch
 Size 9  N/A  2 3/8 inch
 Size 10  N/A  2 11/16 inch

 UNITS AVAILABLE
 12522  68JU8, 68JU8 means Series 68, (J) Back suction economizer, (U) universal replacement, special flange c.c. (8) size 8, 1"
 13922  68-8, 68-8 means series 68, size 8. Replacement of Ford Model A.
 14991  267-8, 267-8 means series 267, size 8 with 21 mm venturi
 14995  267-8, means series 267, size 8, with 23 mm venturi
 
Bodies of the 68 and 267 series are die cast.
Series 61,161 and 62 a have iron bodies. No information on these.

 Durant Motors Engine Size  CID
 Durant 4-cyl 1926 and earlier  200.5
 W4 (believe this right)  130.4
 W5  152.1
 W8  200.4
 14L 169.3
 14L & 15L used on Durant D-60 185.0
 15U & 20E  248.3
 22A & 22AA  199.1
 22A used on 1932 Frontenac  214.7

Information supplied by Robert B Porter