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Thread: 144 Blower noise

  1. #1
    RaGiN Z Guest

    Question 144 Blower noise

    At low RPM, around idle, my supercharger makes a noise, almost like gears turning, I just want to be sure that this is normal. Obviously there is a whine at high RPM.

    Its almost like the girl from the movie "the Grudge" is saying "now now now now now now now now..." if that makes sense...

    Also, how much oil should be in the supercharger? I see there is an eyelet to see inside but I am not sure how high it should be.

  2. #2
    Join Date
    Dec 2009


    Quote Originally Posted by Weiand Installation Instructions
    Blower makes noise when new.
    The Teflon that Holley uses to seal and properly clearance the blower will generally make noise while it is breaking in.
    This is normal and will not effect the life of the blower or the engine.
    This noise may last up to several hours of running time.

    Under normal circumstances, there will be some noise generated by the supercharger.
    Should the noise seem excessive, immediately turn off the engine off and investigate.
    If the noise is noticeable at idle, but goes away as the RPM increase, this is normal.

    Blower makes “rattle” noise.
    Idle is set too low causing harmonic vibration to transmit via drive belts to blower drive.
    Noise is from another source—remove the drive belt and run the engine to isolate the noise.
    Shaft and coupler are loose (rare in new units).

    There will be very little noise from a serpentine supercharger, except at WOT.
    Since the Poly-V belt is quiet it does not add noise to the blower as a Gilmer belt does.
    There may be some additional noise from a new blower while the Teflon seals are seating in.

    Quote Originally Posted by Weiand Installation Instructions
    Regular maintenance will provide many miles of trouble-free driving.
    The most critical aspect of your supercharger is oil level.
    The level should be checked each time you check the engine oil level.
    Oil levels on various Weiand blowers can be checked as follows:

    WEIAND Pro-Street (all kits):

    Front reservoir: Check oil level in the sight glass in the front cover.
    Fill with oil from the top fill plug to the bottom of the sight glass.
    Rear reservoir: These units use sealed bearings in the rear.
    They do not require lubrication.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

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