86 12 Brutus Posted July 19, 2020 Author Share Posted July 19, 2020 I think i'm getting the truck and the ranchero confused. the truck does not have an expansion valve, way to many things going on at the same time. here is pics of some of the original stuff Link to comment Share on other sites More sharing options...
FuzzFace2 Posted July 19, 2020 Share Posted July 19, 2020 Dave I gave you this pressure switch part number on another thread we were on, talking about ac a few days ago. Here it is again, The NAPA part number for the R134 pressure switch is TEM207887. :nabble_smiley_blush:I remember talking about it now number is on my pad to get with other parts when I go out later. Thanks Dave ---- Link to comment Share on other sites More sharing options...
old55pete Posted July 19, 2020 Share Posted July 19, 2020 thanks for that info steve,you just made my life a bit easier I was just looking at the AC compressor mounting brackets in your pictures. Those look like the brackets for a HR980 compressor. Normaly those compressors are from a dealer installed system. From the look of youe evap core, it looks like someone used ac stop leak to get it to hold pressure. That could have been part of the problem you were having with it not being cold enough. Link to comment Share on other sites More sharing options...
FuzzFace2 Posted July 19, 2020 Share Posted July 19, 2020 http://forum.garysgaragemahal.com/file/n67501/20200719_091511.jpghttp://forum.garysgaragemahal.com/file/n67501/20200719_091429.jpg http://forum.garysgaragemahal.com/file/n67501/20200719_091451.jpg http://forum.garysgaragemahal.com/file/n67501/20200719_091614.jpg The control panel sure looks like factory AC one as does the under hood stuff. I would get the system re-newed like you are doing with out the pusher fan and see how it works. Again with all the posts of conversions and they work pretty good I cant see having any issues if it is all new like in your case. We are so close on the pictures or information for the water pump pulley I need. Could you tell me if it has 3 belt grooves and if they are the same dia.? On a side note what belt numbers do you have for the AC & PS? The belt I got for the AC will be to short and the way the PS belt was run was for a non-AC truck and the too small AC belt is to wide & long for the PS. Thanks Dave ---- Link to comment Share on other sites More sharing options...
FuzzFace2 Posted July 19, 2020 Share Posted July 19, 2020 I was just looking at the AC compressor mounting brackets in your pictures. Those look like the brackets for a HR980 compressor. Normally those compressors are from a dealer installed system. From the look of your evap core, it looks like someone used ac stop leak to get it to hold pressure. That could have been part of the problem you were having with it not being cold enough. Steve, that is the 83/ factory bracket And I just bolted up a compressor from an 85 truck to the bracket with no issues. My issues are my truck used a York compressor so used different hoses. I was told the newer compressor hoses would not fit my truck. Well they do I just have to bend the tube a little on my year dryer for the hose to clear the hood. The newer year dryer does not fit the evap coil, I tried. On the evap coil and the blue wonder if that was blue paint from when they painted the truck? It looks like the same color. Dave ---- Link to comment Share on other sites More sharing options...
86 12 Brutus Posted July 19, 2020 Author Share Posted July 19, 2020 http://forum.garysgaragemahal.com/file/n67501/20200719_091511.jpghttp://forum.garysgaragemahal.com/file/n67501/20200719_091429.jpg http://forum.garysgaragemahal.com/file/n67501/20200719_091451.jpg http://forum.garysgaragemahal.com/file/n67501/20200719_091614.jpg The control panel sure looks like factory AC one as does the under hood stuff. I would get the system re-newed like you are doing with out the pusher fan and see how it works. Again with all the posts of conversions and they work pretty good I cant see having any issues if it is all new like in your case. We are so close on the pictures or information for the water pump pulley I need. Could you tell me if it has 3 belt grooves and if they are the same dia.? On a side note what belt numbers do you have for the AC & PS? The belt I got for the AC will be to short and the way the PS belt was run was for a non-AC truck and the too small AC belt is to wide & long for the PS. Thanks Dave ---- I think so on the pulley, ill take some pics and put them up in a few. its so hot outside and working outside just isnt cutting it today. going to do some touch up painting then coming inside the AC. Link to comment Share on other sites More sharing options...
FuzzFace2 Posted July 19, 2020 Share Posted July 19, 2020 I think so on the pulley, ill take some pics and put them up in a few. its so hot outside and working outside just isnt cutting it today. going to do some touch up painting then coming inside the AC. Thanks when you can, I just want to make sure that is the part I am looking for. I been out in the garage trying to make heads or tails of what I got as I have a mix of AC and non-AC parts on the motor but did not know this till I bolted the compressor up yesterday. I hear you on the heat. I have to hit the parts store to exchange wrong parts and get the right PS belt so I can see if the PS spacing I did will work or not. Then I am also calling it quits for the day. I am sure I will be out in the heat tomorrow for work Dave ---- Link to comment Share on other sites More sharing options...
Rusty_S85 Posted July 19, 2020 Share Posted July 19, 2020 we have had trouble with the blend door on this truck and some lincolns we had out of the 80's. they are cheap plastic. take the ploon out and do a repair on the blend door with small hinges and washers from the hardware store. it will work like new again and never break Yep, mine being dealer A/C I dont have a blend door, what controls the temp is a thermostatic switch that cycles the compressor to maintain a temp. On the coldest setting it cycles at like 45*. I think on the coldest setting it should never cycle cause mine is an expansion valve system, I recall looking under the dash once and seeing the expansion valve. So in my eyes the expansion valve will stop the system from freezing so there is no reason to have the cycling switch to cycle when on full cold. Its why I think my thermostatic switch is bad with age, might not be reading the right temp any more so I am looking at getting the mid 60`s under the dash mustang switch that cites full cold cut out is 25* and full cold cut in is like 35*. That should be more than enough for my setup. I just need to get more airflow and I think my problem is when the dealership installed the A/C system they kept the 5 bladed non A/C flex fan instead of upgrading to the 6 bladed clutch fan or the 7 bladed flex fan. I am not a fan of clutch fans as every one they sell now is HD and they sound like an airplane taking off, and I tried switching to a clutch fan on my '78 Mercury and the A/C actually started doing worse as the clutch fan with an extra blade doesnt spin 1:1 ever even in full lock up there is still some slippage where as the flex fan always spin 1:1 no matter what. So I sourced a 7 bladed flex fan from flex a lite that is the same dimensions as the OE 7 blade flex fan basically. Only thing is the diameter is 1/2" less on this one which means its 1/4" smaller on each end but the diameter is the exact same as my 5 bladed flex fan which means I know it will fit my OE fan shrould. I hope this extra blades and pitch will help pull more air across the condenser to help with cooling. If it doesnt my only other two options would be to junk the small half width condenser for a aftermarket full width 134A condenser to give more heat exchange or take and add a small auxiliary condenser fan and splice it into fan 1 on my sniper and switch fan 1 to be an A/C fan. I dont need it to be colder though cause it does blow 58* out of the vent on 100* days and you never sweat in the truck its great as is. But I like to do it right and after finding out the 5 bladed flex fan was never used with A/C I figured let me get the right blades if possible. Might allow me to stuff a little more 134A into the system to make it work better while maintaining lower head pressure. My problem is I dont know what the spec is of my system. I can find charge data for factory A/C but there is no spec for how much refrigerant for dealer A/C so I have to go by pressures and I believe vintage air documents I have from vintage air installs says the high side pressure should be 1 1/2 times the ambient air temperature at full charge. So at 100* ambient air temp then the high side should be 250 PSI but these york compressors they are good to 350 PSI and on my factory A/C for my '78 Mercury my ford shop manual states head pressure can go as high as 320 psi in normal operation. Link to comment Share on other sites More sharing options...
old55pete Posted July 19, 2020 Share Posted July 19, 2020 I was just looking at the AC compressor mounting brackets in your pictures. Those look like the brackets for a HR980 compressor. Normally those compressors are from a dealer installed system. From the look of your evap core, it looks like someone used ac stop leak to get it to hold pressure. That could have been part of the problem you were having with it not being cold enough. Steve, that is the 83/ factory bracket And I just bolted up a compressor from an 85 truck to the bracket with no issues. My issues are my truck used a York compressor so used different hoses. I was told the newer compressor hoses would not fit my truck. Well they do I just have to bend the tube a little on my year dryer for the hose to clear the hood. The newer year dryer does not fit the evap coil, I tried. On the evap coil and the blue wonder if that was blue paint from when they painted the truck? It looks like the same color. Dave ---- I stand corrected sir, thank you. Link to comment Share on other sites More sharing options...
86 12 Brutus Posted July 19, 2020 Author Share Posted July 19, 2020 I think so on the pulley, ill take some pics and put them up in a few. its so hot outside and working outside just isnt cutting it today. going to do some touch up painting then coming inside the AC. Thanks when you can, I just want to make sure that is the part I am looking for. I been out in the garage trying to make heads or tails of what I got as I have a mix of AC and non-AC parts on the motor but did not know this till I bolted the compressor up yesterday. I hear you on the heat. I have to hit the parts store to exchange wrong parts and get the right PS belt so I can see if the PS spacing I did will work or not. Then I am also calling it quits for the day. I am sure I will be out in the heat tomorrow for work Dave ---- Dave, i have your pics, the pulley the inside 2 grooves are the same, the outside one for the ac belt is wider. Also is a pic of he compressor, is the same compressor that was in lincolns and crown vics i believe its an FS6. You are right, the evap has had some stop leak put into it. Pretty much everything in the ac system deteriorated over the years so we just decided to go all new Link to comment Share on other sites More sharing options...
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