News

308 with Sankyo/Sanden A/C Compressor

Discussion in '308/328' started by afterburner, Aug 5, 2015.

  1. Rich in Panama City

    Aug 29, 2013
    118
    Panama City Beach FL
    Full Name:
    Rich Roesch
    It seems that several of us have gone through this investigative process, so I understand concerns; but like Steve King - I have not had any issues. Urs the 15340 belt is .430 wide at the top, .215 wide at the bottom and .330 tall (approximate: I get slightly different measurements each time). You ask about the compressor pulley angle, the now removed compressor had the OEM pulley so whatever that angle is, the now installed Sanden from Retro Air is a perfect fit with the 15340 belt.
     
  2. BigTex

    BigTex Seven Time F1 World Champ
    Rossa Subscribed Owner

    Dec 6, 2002
    71,196
    Houston, Texas
    Full Name:
    Bubba
    Yes Gates Polyflex is the Ferrari OEM....for my "2 belts" anyway.

    There's actually FOUR belts on the early systems, but never mind the smog pump ones...:rolleyes:
     
  3. deeprivergarage

    deeprivergarage Formula Junior
    Owner

    Oct 3, 2009
    544
    S of Fort Worth
    Full Name:
    Jerry
  4. afterburner

    afterburner Formula 3
    Silver Subscribed

    Jun 20, 2008
    2,095
    Hong Kong
    Thanks Jerry - depending on the 2 or 3 belt cars - a variety of belts from Gates apply!
     
  5. andyww

    andyww F1 Rookie

    Feb 7, 2011
    2,775
    London
    Yes.

    I wonder why though? These are not an immediate choice of belt for automotive applications as they are rather fragile.

    I used to work on systems which used these belts on cooling blowers are we were forever replacing them. Once the anodising on the pulleys is worn off, the belts lasted only a few weeks so we were always replacing pulleys as well.
     
  6. afterburner

    afterburner Formula 3
    Silver Subscribed

    Jun 20, 2008
    2,095
    Hong Kong
    Andy, would you know what material automotive a/c clutch pulleys are made of?
     
  7. afterburner

    afterburner Formula 3
    Silver Subscribed

    Jun 20, 2008
    2,095
    Hong Kong
    Great to know, thanks, Steve.
     
  8. afterburner

    afterburner Formula 3
    Silver Subscribed

    Jun 20, 2008
    2,095
    Hong Kong
    #58 afterburner, Aug 11, 2015
    Last edited by a moderator: Sep 7, 2017
    That is good to know!

    Thank you, Rich, for the measurements; below the sectional comparison.

    So the Retro Air pulley is a regular 40° sheave angle pulley as expected. Ferrari must have had their own 60° pulleys made.

    In conclusion, some converted cars run regular belts, some original Polyflex belts. The choice is between fitting the crankshaft and idler pulleys or the compressor's.
    Image Unavailable, Please Login
     
  9. Steve King

    Steve King F1 Rookie

    Feb 15, 2001
    4,356
    NY
    FYI the adapter bracket I used was also where the belt tension was adjusted. I removed the idler pulley completely as it was not needed. So the belt ran from the crank directly to the compressor.
     
  10. afterburner

    afterburner Formula 3
    Silver Subscribed

    Jun 20, 2008
    2,095
    Hong Kong
    #60 afterburner, Aug 12, 2015
    Last edited by a moderator: Sep 7, 2017
  11. andyww

    andyww F1 Rookie

    Feb 7, 2011
    2,775
    London
    I think they are plated steel. But the other pulleys, ie alternator, crank I believe are anodised aluminium.
     
  12. afterburner

    afterburner Formula 3
    Silver Subscribed

    Jun 20, 2008
    2,095
    Hong Kong
  13. Steve King

    Steve King F1 Rookie

    Feb 15, 2001
    4,356
    NY
    Yep that's the one and it worked out great. Less moving parts are better.
     
  14. afterburner

    afterburner Formula 3
    Silver Subscribed

    Jun 20, 2008
    2,095
    Hong Kong
    Absolutely...
     
  15. afterburner

    afterburner Formula 3
    Silver Subscribed

    Jun 20, 2008
    2,095
    Hong Kong
    Steve, did you have a "reverse rotation" clutch or a regular one?
     
  16. Steve King

    Steve King F1 Rookie

    Feb 15, 2001
    4,356
    NY
    Regular and I call one of the AC places and they told me it wouldn't be a problem with the rotary compressor. I installed it did the usual receiver/drier and new expansion valve. Vacuum leak tested and charged it up with 134A. Running on a cloudy 80* day I got 50* out of the ducts but as we all know the glass in these cars were like a greenhouse and for an after thought system it wasn't very efficient.
     
  17. afterburner

    afterburner Formula 3
    Silver Subscribed

    Jun 20, 2008
    2,095
    Hong Kong
    #67 afterburner, Aug 13, 2015
    Last edited by a moderator: Sep 7, 2017
    Thank you, Steve. When I compare the Ferrari/Sanden to a regular Sanden clutch, I cannot see any difference that would indicate a reversed direction layout on the Ferrari's.
    Image Unavailable, Please Login
     
  18. jim rosenthal

    jim rosenthal Karting
    Silver Subscribed

    Sep 10, 2006
    69
    21409
    My understanding is that standard auto AC compressors run CCW, but the one on the 308 is set up to run CW? Isn't that true? We are in the process of converting mine to a rotary compressor.
     
  19. thorn

    thorn Formula 3
    Silver Subscribed

    Aug 7, 2012
    2,201
    Tallahassee, FL
    The 308 compressor does run clockwise. Off the top of my head, I can't think of one that does not run clockwise.
     
  20. jim rosenthal

    jim rosenthal Karting
    Silver Subscribed

    Sep 10, 2006
    69
    21409
    Well, I ordered it yesterday, we'll see how it does. The AC supplier said that m ost run CCW. The one I ordered does run CW, because it's "reversed" at the 'front" of the engine.
     
  21. afterburner

    afterburner Formula 3
    Silver Subscribed

    Jun 20, 2008
    2,095
    Hong Kong
  22. thorn

    thorn Formula 3
    Silver Subscribed

    Aug 7, 2012
    2,201
    Tallahassee, FL

Share This Page