Reply to "Mangusta A/C modifications?"

Hi Steve,
It seems that I remember that pusher fans are much more effective than pullers, they are usually used for idle overheating problems where the air is stagnant. I imagine the air behind a Mangusta when driving is negative pressure.

Also there should be a ring surrounding the blades to control the pressure, either attached to the blades or to the condenser. If there are none on the blades take some 1mm thick aluminum, wide enough to go from the condenser past the fan blades about 30mm when mounted and make a ring, pop rivet it together to barely clear the blades. Find a small rubber U shaped seal to go around it on the condenser side and attach it to the condenser with about 6 well spaced thin wires bent over on one end in the shape of a U. These you slide through the condenser engaging the fins and then bend over the ring. You can bend each one slightly with a pliers to tighten the ring down against the rubber and even the pressure on the seal out when they are all in place.

This will really optimize the fan pressure as air can only go through the fins, not around them. When running you want to be able to feel some air rollng over the ring, this shows that the fins are flowing at capacity and the fan is producing more pressure than they can handle.
Dick Ruzzin