975-46
On the bottom mag picture the C1 C4 mag is on the left and has the small rotating aluminium cap. The -46 was used in some crop duster aircraft applications and I understand they used a smaller carb and just covered up the two barrel intake with a plate with a single hole.
Inside link rods are interchangable but the knuckle pins and master rods are not. The diameter of the end of the knuckle pins is different.
The -46 is an impressive engine and the culmination of decades of refinement on the 975 engine. The 1950s was the era of overkill in radial engines with mega engines with as many as 28 cylinders arranged in four rows were built. What a mechanical marvel but also a mechanics nighmare!
|