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Thread: high pitched whine on high speed corners

  1. 09-03-2015, 06:10 PM #1
    37yrold911
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    high pitched whine on high speed corners

    I can definitely hear this when turning left. Many miles ago I wasn't sure what I was hearing, but it may have gotten louder.

    I suspect the wheel bearings but the wheel does not move when rocked at 6:00 Noon or at 3 & 9. It is also definitely not a rumble, but a large number of squeaks could produce this whine.

    I don't have any service records from PO's mentioning wheel bearings and I have not taken them apart since I bought the car (15 years ago & less than 10,000 miles ago). I _do_ know they are no older than 1984, since the car has Carrera front struts on it.

    Any ideas?
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  2. 09-03-2015, 08:12 PM #2
    edmayo
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    Why not just take them apart and inspect them, there may not even be any grease left in them.
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  3. 09-03-2015, 09:33 PM #3
    37yrold911
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    I was hoping to drive the car for a change. But I am now trying to get the dust cap off...


    BTW - besides that oil seal O-ring is there anything that will always have to be replaced after an inspection?
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  4. 09-04-2015, 03:41 AM #4
    edmayo
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    Nope,,,,just the grease seal.
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  5. 09-04-2015, 03:56 AM #5
    Frank Beck
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    It's pretty rare for a front wheel bearing to make a high pitched whine, but obviously not impossible.
    Make sure the brake pad divider plate isn't contacting the rotor during your initial inspection.
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  6. 09-04-2015, 12:22 PM #6
    37yrold911
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    ok, How do I get the dust cap off? Big pliers did not work & can't do much with hammer and/or chisel. These are Boge struts.
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  7. 09-04-2015, 12:50 PM #7
    Frank Beck
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    Unless you have a "real man's" pair of Channel Locks (20"+ long) place a large heel bar or large round shank screwdriver (again; Man size) in the groove at a slight angle and whack the crap out of it (without hitting a stud!). Work your way around. It'll come off.
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  8. 09-04-2015, 01:32 PM #8
    37yrold911
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    Thanks! That's what I tried - the pliers have flat jaws tho. I'll try a screwdriver, chisel or wrecking bar next.

    Do these look to be the right grease seals? No dealer here and trying to not lose too much driving time this summer, so I tried CarQuest.
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  9. 09-04-2015, 01:39 PM #9
    Frank Beck
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    Brass bar stock works really well too (lol, just what everyone has lying around.)

    We use the steel backed 944 seals.(477 405 641?)
    Is there a size on the new seal?
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  10. 09-04-2015, 03:53 PM #10
    37yrold911
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    the adapter for a floor jack worked perfectly

    the O.D. on that seal is a tad over 6 cm - sound about right?
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