The first photo is a Standard Flange cylinder. The second is a Standard Flange with hold down plates for high compression. The third is a Wide Deck (heavy flange)which can be high or low compression. These all happen to be O-320s.
The Wide Deck bolt pattern is larger than the Standard Flange so the cases and Cylinders do not interchange.
The 0-290 has the Standard Flange cylinders but the barrel is smaller and allows the use of hex nuts.
The Wide Deck bolt pattern is larger than the Standard Flange so the cases and Cylinders do not interchange.
The 0-290 has the Standard Flange cylinders but the barrel is smaller and allows the use of hex nuts.
Last edited:
