"G.R. Patterson III" writes:

Doubt it. The carb on *my* O-320 is located behind the engine. No way all four
cylinders are equidistant from the carb. I doubt that Lycoming has set up a
tuned induction system either, but it's possible.

Is that a Continental O-320 (if such a thing exists)? The Lycoming
O-320 operator's manual suggests that all Lycoming O-320's have the
carb underneath:

Avco Lycoming O-320 series engines are equipped with a float type
carburetor. Particularly good distribution of the fuel-air mixture
to each cylinder is obtained through the center zone induction
system, which is integral with the oil sump and is submerged in oil,
insuring a more uniform vaporization of fuel and aiding in cooling
the oil in the sump. From the riser the fuel-air mixture is
distributed to each cylinder by their individual intake pipes.

Putting the carb back by the accessory drive would probably mess up
the distribution quite a bit. How well does your engine run lean of
peak?


All the best,


David