Search found 10 matches

by rustystuff
Tue Jun 11, 2019 4:03 am
Forum: Automotive Air Conditioning Forum
Topic: another hybrid system question change from fixed orifice to TXV
Replies: 2
Views: 695

Re: another hybrid system question change from fixed orifice to TXV

anyone have any insight? As I understand it the TXV controls system pressure, so would this take the place of the compressor cycling switch? Or does a TXV system use both? Does the compressor run continuously on a TXV system? Again I want to take a orifice tube AC system, remove the evaporator and o...
by rustystuff
Thu Jun 06, 2019 1:46 pm
Forum: Automotive Air Conditioning Forum
Topic: electronically controlled variable displacement
Replies: 1
Views: 503

Re: electronically controlled variable displacement

I would ask over at LS1tech.com forums and see if an earlier LS engine compressor has the same mounting style. LS has been around since 1997 so the earlier compressors may be fixed displacement, I know the previous gen LT1 engines are.
by rustystuff
Thu Jun 06, 2019 11:20 am
Forum: Automotive Air Conditioning Forum
Topic: another hybrid system question change from fixed orifice to TXV
Replies: 2
Views: 695

another hybrid system question change from fixed orifice to TXV

Another one of my hybrid builds is in progress. 2007 Ford Crown victoria A/C, using all underhood components, but cannot use the Ford evaporator and its enclosure due to space limitations in the cabin. It is currently a fixed orifice setup, I want to install an aftermarket under dash universal evapo...
by rustystuff
Thu Jun 06, 2019 11:11 am
Forum: Automotive Air Conditioning Forum
Topic: hybrid system 1980s/1990s questions
Replies: 10
Views: 1444

Re: hybrid system 1980s/1990s questions

Just an update, the system has been finished for awhile and works great. Used a new 1995 z28 compressor, condensor, 81 trans am evaporator, new 81 trans am orifice tube, new clutch pressure cycling switch for R134 pressures. New accumulator, made my own new hoses. Charged with 1995 Z28 amount of ref...
by rustystuff
Mon Mar 25, 2019 5:51 pm
Forum: Automotive Air Conditioning Forum
Topic: hybrid system 1980s/1990s questions
Replies: 10
Views: 1444

Re: hybrid system 1980s/1990s questions

I have a 1995 Z28 engine in the 78 trans am, so I have the low mount 95 compressor and condenser from the Z28, and the reverse cooled engine as well. I am making custom lines. Difference is instead of running a TXV valve like the 95 Z28 did I am using a fixed orifice in the 78 trans am evaporator. S...
by rustystuff
Mon Mar 25, 2019 9:42 am
Forum: Automotive Air Conditioning Forum
Topic: hybrid system 1980s/1990s questions
Replies: 10
Views: 1444

Re: hybrid system 1980s/1990s questions

That picture is actually upside down, the male threaded fitting is on the passenger side bottom, so the compressor discharge will connect to the bottom.
by rustystuff
Sun Mar 24, 2019 6:07 pm
Forum: Automotive Air Conditioning Forum
Topic: hybrid system 1980s/1990s questions
Replies: 10
Views: 1444

Re: hybrid system 1980s/1990s questions

Thanks, I did not describe the condenser well enough. Both ports are on the passenger side. Is there a reason the compressor should discharge into the upper part of the condenser? Looks like this one was backwards. After reviewing the layout of the 95 Z28 flow it looks like the compressor discharge ...
by rustystuff
Sat Mar 23, 2019 2:04 pm
Forum: Automotive Air Conditioning Forum
Topic: hybrid system 1980s/1990s questions
Replies: 10
Views: 1444

Re: hybrid system 1980s/1990s questions

couple more questions if I could. I decided to go with all new 1995 z28 parts, so new compressor, condenser, accumulator, orifice tube, and hoses, all for R134. Only used part from the 78 trans am will be the evaporator. So the oil charge and refrigerant charge I will use the 95 z28 amounts. Does it...
by rustystuff
Tue Mar 12, 2019 2:28 am
Forum: Automotive Air Conditioning Forum
Topic: hybrid system 1980s/1990s questions
Replies: 10
Views: 1444

Re: hybrid system 1980s/1990s questions

Thank you! You are right, I double checked and this trans am had the R4 compressor, so I will have to double check the original amount of R12 it used. I will also see about a newer style condenser, as far as performance do you mean vent temperature will not get low enough with the original?
by rustystuff
Mon Mar 11, 2019 7:48 pm
Forum: Automotive Air Conditioning Forum
Topic: hybrid system 1980s/1990s questions
Replies: 10
Views: 1444

hybrid system 1980s/1990s questions

Hi, hoping for some info on how to approach this. I am a newbie to A/C repair but have an idea of how it works. I have a 1981 trans am factory A/C car that has a newer engine and an HD6 A/C compressor installed. Originally had an A6 compressor, and I have read either 3.25 or 3.75 pounds of R12. The ...

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