air conditioner compressor swap or??
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air conditioner compressor swap or??
I’m putting a 95' F350 460 into my 72' F350 but wondering if the air conditioner compressor will work from the 95' on the 72' air conditioner system?? Of course we know the 95' has the serpentine belt so can the pulley be pulled off that to put on the current 72' compressor or.... any info or thoughts??
Todd
Todd
Fleet Mechanic
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From: Piney Woods of East Texas
The evap unit uses a expansion valve, so it should work fine with R134. You just need to flush the lines, evap, and condensor very good to remove all of the mineral base oil. Replace the drier. Mineral oil + R134 = ACID, will eat up AL very fast, and copper at a slower rate. A system not cleaned properly normally work for 12-18 months before they start leaking. Then add 3-4oz of oil (same as comp) into your system to replace what was flushed out. Start with 60% of your R12 charge. You will loose roughly 30% of your cooling capacity from the conversion. But these were way over size so you should cool ok. R134 requires a larger cond and evap to be effiecent. Expansion Valve system are more forgiving on charge since they control by temp.
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can I pull other stuff off the 95' to use on the 72' AC that will improve it by splicing it in somewhere and just use the fan or?? (I have the whole 95' system)???
Newbie on A/C so other questions. Where is the evap, condensor and dryer... I can get a pic under my hood. What do you flush the lines with??
Thanx,
Todd
Newbie on A/C so other questions. Where is the evap, condensor and dryer... I can get a pic under my hood. What do you flush the lines with??
Thanx,
Todd
Fleet Mechanic
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From: Piney Woods of East Texas
The condensor will be the main thing that you need, these are larger for R134. I do not see the other parts working/fitting under the dash. Besides the expansion valve is a lot better than the fixed orfice found on most systems.
Most parts supplies houses carry the flush. They are in a pressurized can. Pickup 3-4 cans. You can not flush through the expansion valve, so you will need to remove the valve to flush the evap.
Most parts supplies houses carry the flush. They are in a pressurized can. Pickup 3-4 cans. You can not flush through the expansion valve, so you will need to remove the valve to flush the evap.
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Now you mean I can use the 95's condensor ( the A/C radiator in front of the engine radiator) for the R134 (R134 meaning freon type?) expansion valve I also use off the 95?? I should then be able to keep the 95' hoses currently from the compressor then to the condensor??
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If you are going to remove the serpentine pulley from the '95's compressor and use an earlier style pulley instead, you had better measure the diameter of the compressors shaft, first.
The I.D. of those two pulleys may not be the same.
Ford used the same York compressor from 1963 thru the early 1980's. When they went to serpentine belts, they used a different compressor.
The I.D. of those two pulleys may not be the same.
Ford used the same York compressor from 1963 thru the early 1980's. When they went to serpentine belts, they used a different compressor.
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From: Piney Woods of East Texas
What I tried to say was the condensor needs to be used from the 95. The R12 exp valve (71) will work with R134 freon. Expansion valves control by monitoring the suction line temp. So the 71 will work. I don't think the 95 exp will fit the 71 evap. The 71 exp is more like a valve used in commercial refig, flare connection on each end with a equalizer tube and a sensing bulb.
Now a AL radiators disapates the heat better than the copper ones. And if it's a cross flow vs vertical it will be more efficent too. So swapping the radiator is not required it's just up to you.
Now a AL radiators disapates the heat better than the copper ones. And if it's a cross flow vs vertical it will be more efficent too. So swapping the radiator is not required it's just up to you.
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So the 95' uses R134 and the 72' uses R12. So will I be putting the R134 in the system then when I get the 95's condensor on?
Confusing me here:
Start with 60% of your R12 charge (does this mean that 60% because of the R134 I will now be using?)
Confusing me here:
Start with 60% of your R12 charge (does this mean that 60% because of the R134 I will now be using?)
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From: Piney Woods of East Texas
You need to confirm by the fittings, 1990 was when R134 was mandintory if I have my years correct. R12 used a std 1/4" schrader valve, where the R134 uses a lot larger fitting. There should be a tag on the radiator support. You will need to buy a R134 Conversion kit to change the fittings, if the connections are on the hoses.
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From: Piney Woods of East Texas
Confirm what ref is in the 95. Then use the same ref that the 95 has. Should be R134, but I've been wrong before. There was a 2-4 yr period during the transition to R134 that different models changed at different times.
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From: Piney Woods of East Texas
Yes this was a combination of things that contributed to the transition to R134, environmental was one. Most R12 system used a mineral base oil where R134 used a syn (POA?) oil. The mineral base oil is not compaitable with R134. The R134 ref reacts with the mineral base oil turning it (the oil) to acid, inturn eating up the entire system.
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The 95' is for sure R134 (tag)
The 72' might be also the ports look big (see pic 1)
I see also near the cooler is the canister by the grill on the 72' by the fire wall on the 95' (see pic 2 and 3) so I assume I leave everything where it is just put the 95 radiator on (or could it be that simple
)
The 72' might be also the ports look big (see pic 1)
I see also near the cooler is the canister by the grill on the 72' by the fire wall on the 95' (see pic 2 and 3) so I assume I leave everything where it is just put the 95 radiator on (or could it be that simple
)
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From: Piney Woods of East Texas
The 72 had been converted to R134 by the service port adapters. The canister (vertical) is the filter/drier by the radiator support. The 95 filter/drier is by the FW passenger side, the canister looking device with a low pressure sensor pointing left. The 95 condensor coil is larger than the 72. You can use the original coil and install a new filter but the effiency will not be as good. Would have to monitor the pressures to know if it would be a problem. The lines are routed different between the years, so you may need some custom hoses made up.