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    Results 21 to 31 of 31
    1. #21
      Join Date
      Nov 2006
      Location
      Mountain Springs, Texas
      Posts
      4,488
      Country Flag: United States
      Quote Originally Posted by MAGONSTERZ68 View Post
      Went all back together and lame 62 degrees no matter what i do, opened post on forum listing issues and attempts or fix....no luck thus far :/
      Are you testing with the windows rolled up? At idle or something higher like 2000 rpm?

      Don
      1969 Camaro - LSA 6L90E AME sub/IRS
      1957 Buick Estate Wagon
      1959 El Camino - Ironworks frame
      1956 Cameo - full C5 suspension/drivetrain
      1959 Apache Fleetside

    2. #22
      Join Date
      Mar 2013
      Location
      Sunny Calif
      Posts
      307
      Country Flag: United States
      tinted windows are up and idle at 1800 rpm

    3. #23
      Join Date
      Jan 2006
      Posts
      385
      Country Flag: United States
      when you recharge it are you using pure refrigerant or is it mixed with additional oil? also may want to disconnect the heater lines temporarily. maybe the diverter door is malfunctioning and you're getting warm air mixed in.
      1971 Camaro
      GM HT383, MiniRam EFI, AFR heads
      "8-speed" trans (700R4 + Gear Vendors OD)

    4. #24
      Join Date
      Mar 2013
      Location
      Sunny Calif
      Posts
      307
      Country Flag: United States
      68 Camaro GenIV sure fit system
      Using 3 knob billit rotary variable blend / speed/ temp controller and not the original with mods.(does it have to be calibrated to system?)
      SD5 compressor
      Car utilizes dual electric fans 3000 cfm with trinary switch keeps car steady at 205 in 100 plus degree weather.
      Inline aluminum through firewall bulkhead with extended lines routed through fender
      Radiator to core support is foam sealed and pulls hard through closely spaced radiator / condenser / trans cooler

      1st attempt:
      Charged system on 98 degree ambient temperature day
      Evacuated with zero problems 1 hr., held vac no prob 1 hr.
      Used digital scale to load loaded 1lb 12oz as per instructions.
      Charge was loaded with car at 1800 rpm (to simulate cruising speed) 3.42 gears with 26" tall rear tires
      Low side was 30, high side was 275, and center vent temp was 62 degrees
      line on compressor was cold and sweaty

      Second attempt:
      Evacuated 45 min, held vac 45 min
      Loaded freon until gauges read 12 to 15 psi on the low and 175 to 200 psi on the high at 1800 rpm same 95 degree ambient temps
      Line was NOT cold or sweaty
      center vent temps never dropped below 80 degree.

      Third attempt:
      utilizing second attempt continued to load feaon utilizing gauges read 30 psi on low and 275 on the high again
      temps dropped back down to 62 degrees, line was cold and sweaty.

      At one point i pinched off the hot water in line to the core to verify i was not getting hot water bleed by into case, no change in temps whatsoever.
      On all three tests i sprayed water at condenser, head pressure would drop and low side would follow suit, it would cycle out and recover to high low as before.

    5. #25
      Join Date
      Oct 2014
      Location
      DFW, Texas
      Posts
      422
      Country Flag: United States
      Quote Originally Posted by MAGONSTERZ68 View Post
      Went all back together and lame 62 degrees no matter what i do, opened post on forum listing issues and attempts or fix....no luck thus far :/
      What are the pressures?
      1972 Plymouth 'Cuda - Not LS-swapped, 5.7L Hemi [MS3 Gold Box], T56 Magnum 6-speed - 'Cuda Build Page
      1976 Dodge D100 - Warlock
      2016 Subaru WRX - E30 Tune

    6. #26
      Join Date
      Mar 2013
      Location
      Sunny Calif
      Posts
      307
      Country Flag: United States
      Used autozone freon stuff with oil and dye mixed in with it if that is of any difference.
      Thinking i might vack the system flush drier and condenser and reload with JUST freon with zero additives such as dye, oil or seal conditioner.

      - - - Updated - - -

      1st attempt:
      Charged system on 98 degree ambient temperature day
      Evacuated with zero problems 1 hr., held vac no prob 1 hr.
      Used digital scale to load loaded 1lb 12oz as per instructions.
      Charge was loaded with car at 1800 rpm (to simulate cruising speed) 3.42 gears with 26" tall rear tires
      Low side was 30, high side was 275, and center vent temp was 62 degrees
      line on compressor was cold and sweaty

      Second attempt:
      Evacuated 45 min, held vac 45 min
      Loaded freon until gauges read 12 to 15 psi on the low and 175 to 200 psi on the high at 1800 rpm same 95 degree ambient temps
      Line was NOT cold or sweaty
      center vent temps never dropped below 80 degree.

      Third attempt:
      utilizing second attempt continued to load feaon utilizing gauges read 30 psi on low and 275 on the high again
      temps dropped back down to 62 degrees, line was cold and sweaty.

    7. #27
      Join Date
      Nov 2006
      Location
      Mountain Springs, Texas
      Posts
      4,488
      Country Flag: United States
      I use the R134A with dye and it works fine.

      Don
      1969 Camaro - LSA 6L90E AME sub/IRS
      1957 Buick Estate Wagon
      1959 El Camino - Ironworks frame
      1956 Cameo - full C5 suspension/drivetrain
      1959 Apache Fleetside

    8. #28
      Join Date
      Oct 2014
      Location
      DFW, Texas
      Posts
      422
      Country Flag: United States
      Quote Originally Posted by MAGONSTERZ68 View Post
      Used autozone freon stuff with oil and dye mixed in with it if that is of any difference.
      Thinking i might vack the system flush drier and condenser and reload with JUST freon with zero additives such as dye, oil or seal conditioner.

      - - - Updated - - -

      1st attempt:
      Charged system on 98 degree ambient temperature day
      Evacuated with zero problems 1 hr., held vac no prob 1 hr.
      Used digital scale to load loaded 1lb 12oz as per instructions.
      Charge was loaded with car at 1800 rpm (to simulate cruising speed) 3.42 gears with 26" tall rear tires
      Low side was 30, high side was 275, and center vent temp was 62 degrees
      line on compressor was cold and sweaty

      Second attempt:
      Evacuated 45 min, held vac 45 min
      Loaded freon until gauges read 12 to 15 psi on the low and 175 to 200 psi on the high at 1800 rpm same 95 degree ambient temps
      Line was NOT cold or sweaty
      center vent temps never dropped below 80 degree.

      Third attempt:
      utilizing second attempt continued to load feaon utilizing gauges read 30 psi on low and 275 on the high again
      temps dropped back down to 62 degrees, line was cold and sweaty.
      Have you removed coolant from the heater core by blocking off the hoses? The second attempt pressures look right to me assuming you have adequate airflow across the condenser.
      1972 Plymouth 'Cuda - Not LS-swapped, 5.7L Hemi [MS3 Gold Box], T56 Magnum 6-speed - 'Cuda Build Page
      1976 Dodge D100 - Warlock
      2016 Subaru WRX - E30 Tune

    9. #29
      Join Date
      Jan 2006
      Posts
      385
      Country Flag: United States
      have you checked the voltage at the compressor clutch?
      1971 Camaro
      GM HT383, MiniRam EFI, AFR heads
      "8-speed" trans (700R4 + Gear Vendors OD)

    10. #30
      Join Date
      Mar 2013
      Location
      Sunny Calif
      Posts
      307
      Country Flag: United States
      Quote Originally Posted by ULTM8Z View Post
      have you checked the voltage at the compressor clutch?
      yes full voltage, as well as correct gap, clutch is fully engaging and not slipping.

      - - - Updated - - -

      Quote Originally Posted by GoodysGotaCuda View Post
      Have you removed coolant from the heater core by blocking off the hoses? The second attempt pressures look right to me assuming you have adequate airflow across the condenser.
      think im going to disconnect the water heater lines for now see if makes a diff.

    11. #31
      Join Date
      Mar 2013
      Location
      Sunny Calif
      Posts
      307
      Country Flag: United States

      update

      so after all this time later, good friend acquired a legit a/c machine. We pulled it down, held vac, loaded 1.8 of freon. At idle and 80 deg ambient temps, at sea level, center vent cooled down to 48-50. Called it good, 229 on the high side and 30 on the low. I have not driven much lately to check on road temps would really like to dip into the mid 40's if feasible with either adding or removing freon.



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