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Thread: Fluidampr and crankshaft pulley

  1. #1
    Join Date
    Dec 2010
    Location
    SE Texas
    Posts
    66

    Default Fluidampr and crankshaft pulley

    Searched the forum and couldn't find an answer to this question: If you replaced your oem HB with a Fluidampr, what kind of crankshaft pulley would you get to replace the oem pulley? I want to replace both of them, not sure whether to get a new AC Delco crank pulley or go with one of these solid billet aluminum crank pulleys like Leroy Diesel sells. Seems to me the original crank pulleys are made the way they are for a reason. But with a Fluidampr and solid aluminum crank pulley combo the problem of deteriorating rubber would be eliminated I would think. Would the solid aluminum pulley cause premature belt failure or extra wear and tear on the serpentine belt system since it doesn't have any dampening built into it? Any advice would be appreciated. Thanks.
    '95 GMC Sierra 6.5TD C2500, reg cab, long box, 2x4, 4L80E, 3.73 ratio, VIN F, L65, 120K. Mods: DE 4" exhaust/crossover, WW2, PMD relocate, Dmax fan/clutch, HP air filter, Fluidampr, B&M Trans/Diff covers.

  2. #2
    Join Date
    Nov 2002
    Location
    Martinsville, IN
    Posts
    3,163

    Default

    The reason the factory pulley has a rubber insert is for belt life. Diesel dynamics wreak havoc on the belt.

    There are lots of dumb aftermarket gimmicks out there (i.e. "billet" crank pulleys, bypass flow restrictors, etc.) that should never have seen the light of day.

    Use the factory crank pulley.

  3. #3
    Join Date
    Dec 2010
    Location
    SE Texas
    Posts
    66

    Default

    That is what I was thinking but wanted to hear it from somebody on this forum. Thank you, sir.
    '95 GMC Sierra 6.5TD C2500, reg cab, long box, 2x4, 4L80E, 3.73 ratio, VIN F, L65, 120K. Mods: DE 4" exhaust/crossover, WW2, PMD relocate, Dmax fan/clutch, HP air filter, Fluidampr, B&M Trans/Diff covers.

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