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All_talk

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Posts posted by All_talk

  1. 1 hour ago, ohno06gt said:

    In that situation the raised wheel turns freely with a crunchy sound coming from the rear diff/axle stub as seen in the video in the first post. 

    Another forum member stated that is normal operation for an open diff.

    But is the driveline turning? I'm not sure if the 4EAT locks the driveline like a RWD car does when the trans is in park. If the drive line is turning then yes, that is normal for an open diff.

     

     

     

     

  2. Diff failures on these cars are pretty rare, but rear wheel bearing failures are Very common, I would be sure of you diagnosis before going through the work of swapping the diff.

    I have changed out noisy wheel bearings on many different cars and could almost never feel movement at the wheel. Even running the car on a lift/stands rarely reveals the noise because the bearings have no weight on them. Road test is the best way, and that can be tricky. I can normally sense front to rear fairly quickly, but left to right is harder to sort out (specially in the rear). But that is less important because I would always replace both sides anyway.

    With one wheel in the air and the trans in park (driveline locked), the raised wheel should not turn. With both wheels off the ground and the car in park the wheels should spin opposite of each other.

     

    • Like 1
  3. On 7/7/2023 at 2:14 PM, m sprank said:

    It is not necessary to perform a “cool down/idling” procedure on Subaru WRX/STi/LGT turbo models, as was recommended with past turbo models. The current 2.0/2.5 liter turbo engine has a far greater cooling capacity and, coupled with technology advances, makes this practice no longer necessary. This explains why information about a cool down is not included in the Owner’s Manuals. The heat contained in the turbocharger begins to vaporize the coolant at the turbocharger after the engine is stopped. This hot vapor then enters the coolant reservoir tank, which is the highest point of the coolant system. At the same time the vapor exits the turbocharger, coolant supplied from the right bank cylinder head flows into the turbo. This action reduces the turbocharger temperature. This process will continue until the vaporizing action in the turbocharger has stopped or cooled down.

    Yes, this recirculating coolant feature has been part of the EJ turbo design since the start. My 1991 Legacy SS had it.

  4. I not positive but I think there may be some differences with the timing marks between the plastic and metal timing gears. I know there was with the EJ engines from the 90s. I seem to remember the cam sensors were different as well. 

    Assuming it is running fine at this point?

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