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Thread: rear seal on crank

  1. #1
    Join Date
    Apr 2009
    Location
    mississippi
    Posts
    137

    Default rear seal on crank

    I am rebuilding the 345 and have the camshaft and crank in, The rear seal on the crank has a flat side and the front is kinda ribbed....does the flat side go to the motor?

  2. #2
    Join Date
    Sep 2009
    Posts
    7

    Default

    the seal should go taper side to the inside. like this:

    oil / air

    the oil pressure pushes against the seal to help seal.

  3. #3
    Join Date
    Apr 2009
    Location
    mississippi
    Posts
    137

    Default

    got all pistons in and torqued and the rear seal in. Next I'll be putting the heads on and timing gears, clutch pressure plate and maybe get the motor installed next week. I have to get belts and hoses along with a water pump. Getting closer.

  4. #4
    Join Date
    Sep 2009
    Posts
    7

    Default

    make sure to put sealant on the fly wheel bolts, if not it will seep through and ruin your clutch.

  5. #5
    Join Date
    Oct 2009
    Location
    Australia
    Posts
    18

    Default

    is the rear seal a 1 piece or 2 piece item?

  6. #6
    Join Date
    Apr 2009
    Location
    mississippi
    Posts
    137

    Default

    Front and rear seals are one piece. The rear seal went in very easy, I pulled the rear main cap off and it just fits right in then put the main back on and torque it. I have the motor on a stand which makes it easy. Takin my time. First motor to build.

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