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I'm fed up with my 308's lack of AC!!

Discussion in '308/328' started by Ultimate Pedals, Aug 26, 2007.

  1. Dr Tommy Cosgrove

    Dr Tommy Cosgrove Three Time F1 World Champ
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    May 4, 2001
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    Tommy
    Smart move staying with R12
     
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  3. Lawrence Coppari

    Lawrence Coppari Formula 3

    Apr 29, 2002
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    Lawrence A. Coppari
    Having spent my career in the chemical industry performing heat transfer analyses on process equipment, the figure used for radiant flux is 320 BTU/hr-ft**2 for the eastern seaboard of the US. So you have that heat load on top of 90+ degree humid air. And humid air is more difficult to cool than dry air. It takes about 970 BTU to condense 1 pound of water vapor at atmospheric pressure. Then there is the large windshield, the side windows with the negative camber, and the poorly insulated targa top. It's quite a load on the AC system that does not blow enough air to begin with.
     
  4. Ultimate Pedals

    Ultimate Pedals Karting

    Nov 1, 2003
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    Rob Baylor
    Lawrence, based on your experience what size system and how many cfm are required to adequately cool the 308?
     
  5. VIZSLA

    VIZSLA Four Time F1 World Champ
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    Jan 11, 2008
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    David
    Ssh.
    My AC doesn't know that it shouldn't work.

    ;)
     
  6. tifosi12

    tifosi12 Four Time F1 World Champ
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    Oct 3, 2002
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    Has been a while since I did that on my 308. But I vaguely remember it took surprisingly few cans. IIRC 4 to 6.
     
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  8. rdefabri

    rdefabri Three Time F1 World Champ
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    Jun 4, 2008
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    You guys think a 308 w/o AC is bad? Try a Jag E-Type FHC w/o air, and a black interior.

    I feel like a roasted marshmallow coming out of the car in the summer. At least my 308 has a tan interior!!!
     
  9. Ferraridoc

    Ferraridoc F1 Veteran

    Jun 20, 2012
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    Gold Coast, Aust.
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    Patrick
    No
     
  10. Lawrence Coppari

    Lawrence Coppari Formula 3

    Apr 29, 2002
    1,914
    Kingsport, TN
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    Lawrence A. Coppari
    With my 328 if sun is directly overhead the AC is insufficient to make me feel comfortable as my other vehicles permit me to feel. It is fine on cloudy hot days. This leads me to believe that a window film that reflects radiation instead of letting it enter the car would help considerably. Even increasing the CFM would help although it may have been sized to be commensurate with the evaporator and condenser specifications so increasing its output may or may not help much. At idle with the vehicle stationary my AC is insufficient.
     
  11. Crowndog

    Crowndog F1 Veteran
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    Jul 16, 2011
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    I can relate. Traded the factory air in my 69 E type for a dual point distributor. What was I thinking? Drove with the windows down most of the time.
     
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  13. Brian A

    Brian A Formula 3

    Dec 21, 2012
    2,247
    SanFrancisco BayArea
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    1983 US 308 GTS QV
    I purchased a Spal 30000463 blower unit to replace and upgrade from my stock one. I have not yet removed the evaporator/fan assembly.

    In doing preliminary measurements, it does not appear that the new blower can fit in my car. It is about 1/4" larger in diameter and my existing blower unit is already touching the side of the wheel well (see photo).

    Does anyone who has upgraded their evaporator fan know if the assembly be shifted toward the center of the car? In studying other people's photos (particularly user "Ultimate Pedals") it does not appear that this is possible. Is there a smaller Spal unit that fits better? I fear I will have to return the 463 and just stay with the stock unit.

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  14. Du_Man

    Du_Man Karting
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    Apr 23, 2003
    84
    Dallas, Texas
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    Derek
    I have been watching this great post!
    I am in the process of tearing down my 80GTSi under-dash A/C evaporator housing and will replace the blower motors(even though the old ones work). Can I use the 008-A54-02 with the higher CFM but has the higher AMPS? I will install Jason's newer fuseblock upgrade soon, but am I asking for trouble with double the amps for the blower motors? I know a conversion adapter bracket/plate will probably be needed to mount the blowers.

    Now for the lack of knowledge "dummy questions".....

    If the A54 is a three-speed motor, I can wire to just the max connector?
    To test the evaporator for no leaks, I can take to an automotive shop that does A/C repair?

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  15. Ferraridoc

    Ferraridoc F1 Veteran

    Jun 20, 2012
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    #237 Ferraridoc, Oct 18, 2020 at 3:12 AM
    Last edited: Oct 18, 2020 at 3:17 AM
    See my thread on the subject:
    https://www.ferrarichat.com/forum/threads/upgrading-a-c-and-radiator-while-im-in-there.611123/
     
  16. Brian A

    Brian A Formula 3

    Dec 21, 2012
    2,247
    SanFrancisco BayArea
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    1983 US 308 GTS QV
    I forgot that I posted this question. To follow-up, I successfully installed the 407 cfm Spal 30000463 (aka Spal 08-A45-02) with minimal fitment issues (using an adapter plate). It runs on factory wiring at all three speeds without issue (i.e. fuse does not pop). It blows a lot more air than did the factory unit.

    If Ferraridoc thought it was beyond his depth to fit the Spal 008-A54-02, that says its pretty tricky. There is a bit of room to position the evaporator assembly a little more to the left by cutting the bulkhead area and repositioning the evaporator mounting points. At my level of skill, that would be major surgery. Having 543 cfm would be awesome though.

    Regarding pressure-testing the evaporator, any a/c shop could do it. It is unlikely your evaporator is leaking though. It is almost always the unions and hoses that leak.

    Just wiring to the max connector would work.
     
  17. Du_Man

    Du_Man Karting
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    Apr 23, 2003
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    Derek
    I forgot about that post.....another very excellent read. You really are a Ferraridoc. Your wise quote that I struggle with at the moment...Another point is: don't start one job without allowing for a dozen other jobs to crop up along the way - these cars have been around a long time, and things need doing! Everything is filthy, smelly, and needs addressing.
     
  18. Du_Man

    Du_Man Karting
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    Apr 23, 2003
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    Derek
    Thank you, Brian. I am glad you confirm that the Spal 463 blows more air.
     

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