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63 Avanti clutch fan replace/rebuild??

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  • 63 Avanti clutch fan replace/rebuild??

    Visited the Avanti at my mechanics today, and he pointed out that the
    fan clutch is leaking fluid, so need to address that. He is of the
    impression that the replacement units sold by the usual Stude vendors
    are of the non-thermal type, rather than having a thermal control for
    locking/unlocking the fluid coupling. Any experience with these out
    there? Sasco lists the part (# 1560257) at a higher price than Stude
    Intl, Stephen Allens, or Chuck Collins. Even if a NOS part were
    available, I suspect that would be taking a gamble on longevity.
    Hayden's online catalog shows all their clutch fans using a coiled
    metal thermostat, versus the straight bi-metallic strip used on the
    Avanti's. Perhaps all new production is of that type.

    Is rebuilding these an option, even though for most cars it is cheaper
    to simply buy new? Saw in a Stude newsgroup post from 1998 that Fred Oliva was
    rebuilding them, but his link is inactive and I do not see him in the
    SDC directory. Classic Auto Air in Tampa FL did a great job recently
    in rebuilding the original A/C receiver/drier, so may check with them
    unless I hear other suggestions here.

    Thanks..



    Chris Collins
    63 Avanti R-2
    66 Cruiser

  • #2
    The Caddy 1975-80 is the one used for Avanti but the hole where nose goes into has to be opened up .005"

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    • #3
      Alan, does the pilot hole need to be made wider in diameter, or cut deeper? I'd assume the former could be done with a round file if only another .005 inch is needed.

      The Hayden catalog lists a few 75-80 Cadillac clutches depending on the engine (425; 350 diesel; 368; etc). Any recollection of a specific engine? According to Jon Myer, the non-thermal type was made special for Studes and is the only exact-fit new part made available today by our vendor community. Thanks again.

      Chris Collins
      63 Avanti R-2
      66 Cruiser

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      • #4
        Chris I put one on my 63 R1 about 1980 I had to open the diamater .005", back then they were $35.It was for a 425-500 gas engine.

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        • #5
          Thanks Alan...will go to a parts store and check those out.

          Chris Collins
          63 Avanti R-2
          66 Cruiser

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