ac orifice tube

[Capt dong]

anyone use one thats smaller or bigger than factory that makes air blow colder? if so do you have a part number?

[Moto2four]

Originally Posted by Capt dong

anyone use one thats smaller or bigger than factory that makes air blow colder? if so do you have a part number?

Don't change that up. It's manufactured and designed to flow a specific amount of refrigerant. Stick with the stock size.

[Capt dong]

some of the 73 and 60 guys changed theirs up. figured it might work with the 64.

[Antonm]

I've heard of this as well. Anyone with more info on it? My A/C could use a little extra help in this heat.

[44magnum]

Im interested as well.

[gary2070]

Contact BP Diesel. They offer an orifice tube to improve ac cooling with their kit.

[44magnum]

I'm not familiar with BP diesel?

[gary2070]

Installation Stage 3: Air-conditioning Adjustment - Bumper Installation Version Only
NOTE – IN SOME HOTTER CLIMATES, A SMALL ADJUSTMENT TO THE AIR-CONDITIONING SYSTEM MAY BE REQUIRED. THIS MAY BE NECESSARY BECAUSE ALL OF THE HEAT FROM THE ENGINE OIL COOLER IS NOW BEING DUMPED IN FRONT OF THE CONDENSER. THE SMALL ADJUSTMENT OUTLINED BELOW WILL COMPENSATE FOR THIS CHANGE.
1. Reclaim the refrigerant from the AC system in accordance with local and EPA regulations.
2. Remove the OE orifice tube and replace with a GM white orifice tube (Four Seasons Part# 38623).
3. Evacuate and recharge the AC system with an additional 6oz of refrigerant (more than the OE specified amount). Test drive at highway speeds and add up to an additional 12oz of refrigerant as needed.

[Antonm]

So where is the orifice physically located? I know its somewhere in the liquid line that runs from the condenser (out by the rad) to the evaporator (in the dash), but not sure where in that line and that line is a little hard to follow at times.