Stock A/C (3 Viewers)

[JohnnyC]

hay...thats nice

 

[PabloCruise]

Can anyone post up pics of what the air conditioner set-up looks like inside the cab and how the condenser mounts?

Thanks!

 

[cruiser_guy]

Can anyone post up pics of what the air conditioner set-up looks like inside the cab?

Thanks!

Post #55 of my September POTM thread shows the in cab stuff all installed. The only thing not done is the compressor. I can shoot more pics if needed.

 

[Trollhole]

you dont need one of those brackets. that one pictured is for FJ55 with A.C only, from mid 75 till the end of 78. the compressor that fits it is obsolete, and I doubt you will find a another compressor to fit it...

I would use the Fj60 motor mount, and an FJ60 compressor... it will be easier.

the early(7/'70-mid 75) compressor bracket will be easier to mount another compressor to, since its got a flat plate mounted to it above where the motormount isolator bolts to it... I made a flat plate to hold a sanden 508 on my OEM A\C install...

You know you posted twice about using the FJ60 bracket and I was to stupid to take you advice then. Now that I have build a 86 2f with the FJ60 brackets for A/C it's all perfectly clear. Thank you for you patience.

Would you also install the alt bracket? I would think that would make it a lot easier.

Stand back.I'm not pimping the motor but gives you a good idea of what a FJ60 mount looks like.

No anothe question. Those that have stock A/C how well does it work with 134A in it? I've been hearing about freeze 12 and was wondering how well it performed.

 

[cruiserbrett]

Sorry to sound pushy or pissed a while back. I have worked around the stock FJ55 systems a few times, and the FJ60 setups just make more sense since you have easily availible brackets, etc, and a compressor you can actually find rebuilt/used.

The stock A/C will work fine with 134a if you have a modern condensor. r134a will require new hoses(barrier wall) even if some shop doesnt tell you that, so just get a kit from the various AC places with a #6 and #10 straight flare crimp fitting.

I would not use the freeze 12 or other r12 substitutes. they are blends of misc refrigerants(and propane-not certified for automotive MVAC use) and while they might work almost as well as r12, shops are reluctant to work on them since they can contaminate their equipment. ruining a 30lb cylinder of r12 is going to cost ALOT. If you can borrow a vacuum pump, and do the work your self, go for it, but most every shop these days only uses the combo vacuum pump/lubricator/refrigerant charging stations so they arent going to want to work on the blends....

 

[Trollhole]

Sorry to sound pushy or pissed a while back. I have worked around the stock FJ55 systems a few times, and the FJ60 setups just make more sense since you have easily availible brackets, etc, and a compressor you can actually find rebuilt/used.

The stock A/C will work fine with 134a if you have a modern condensor. r134a will require new hoses(barrier wall) even if some shop doesnt tell you that, so just get a kit from the various AC places with a #6 and #10 straight flare crimp fitting.

I would not use the freeze 12 or other r12 substitutes. they are blends of misc refrigerants(and propane-not certified for automotive MVAC use) and while they might work almost as well as r12, shops are reluctant to work on them since they can contaminate their equipment. ruining a 30lb cylinder of r12 is going to cost ALOT. If you can borrow a vacuum pump, and do the work your self, go for it, but most every shop these days only uses the combo vacuum pump/lubricator/refrigerant charging stations so they arent going to want to work on the blends....

Yes have my own vac pump and gauges planning on doing all this myself.

 

[n2666s]

water condensation from the AC

Marshall got the AC <original dealer installed> charged up, ran it and it will freeze your ass off...... happy.....but after about an hour there was at least a quart of water on the floor boards , it was just running out the bottom and spraying out the vents ...Marshall, have you run into this problem?; any suggestions?? TIA

Lou

 

[cruiserbrett]

Marshall got the AC <original dealer installed> charged up, ran it and it will freeze your ass off...... happy.....but after about an hour there was at least a quart of water on the floor boards , it was just running out the bottom and spraying out the vents ...Marshall, have you run into this problem?; any suggestions?? TIA

Lou

check the drains in the evap case. there should be a tube or tubes exiting the bottom of the evap case going through the floor. make sure the tubes are free of any obstructions.

 

[DesertLake]

I always thought that the fan didn't move enough air relative to the temperature drop on the AC; mine tended to freeze up. I may have been using an oversize compressor though, I really don't know.

 

[cruiserbrett]

freezing up on stock A/C? or aftermarket?

Freezing is generally a sign of one of two issues:
1:stuck TXV(sticks or freezes in open position) Often too much moisture in the refrigerant system can cause it to freeze open
or
2: Malfunctioning thermistor(stock A/C) or capillary tube thermostat(aftermarket A/C setups)


If both systems are working correctly, even with low airflow, the TXV senses refrigerant outlet temp on the evaporator and regulates flow accordingly-less flow will raise the evap temp reducing icing. If the thermistor or capillary tube detects to low a temp(around 34 degrees or lower) it should decrease the on cycle of the compressor.

 

[Trollhole]

check the drains in the evap case. there should be a tube or tubes exiting the bottom of the evap case going through the floor. make sure the tubes are free of any obstructions.

x2222

 

[DesertLake]

Stock evap and condenser, aftermarket pump I think. When last it worked (10 years ago?) I tried both the stock and the aftermarket controller. The controller did its job like it was supposed to, but then you just couldn't cool the interior down. Or disconnect the controller, and the core would ice up. I tried replacing the blower at some point, but the airflow was still pretty weak. Louvers worked like they were supposed to.

Looking back on it I'll bet the fan switch had pretty high resistance.

 

[n2666s]

mine did not freeze just started sraying small water droplets from the top louvers along with real cold air + water just ran out the bottom "cover/hatch"........have a dumb ass question; where is the drain located for the evaporator case? TIA

Lou

 

[weeboo]

Where would one find the belt for the original stock AC? I don't have one, so I'm not sure how to find one.

 

[cruiserbrett]

measure it and go to Napa.

 

[weeboo]

measure it and go to Napa.

I have no belt to measure, also there are shape considerations to think about...

 

[cruiserbrett]

I have no belt to measure, also there are shape considerations to think about...

I think you need a 15/32" wide belt. Now you can take some twine and measure the length needed but wrapping around the two pulleys and going from there. if you measure the width of the V-groove you can also double check the width.

Then its a matter of grabbing a few from the parts store, figuring what fits and returning the rest. some places may have a old paper catalog with belt lengths needed...

Kragen shows a 17501 as the part number for a 76 cruiser with A/C but no idea if its correct.

 

[weeboo]

Thanks for the tips... very helpful, I've never known how to get past the "what year, make and model" question at the parts counter.

who else just replies... "that won't matter"

 

[n2666s]

Marshall......how do you plan on wiring the AC?..can't find any schematics on it.......;

Lou

 

[Trollhole]

Lou, it's in the Tech links at the top.

http://www.ih8mud.com/tech/pdf/1978_FJ55_factory_Toyota_AC_Guide.pdf