12-JG Removal
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12-JG Removal

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    Member Dave01's Avatar
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    Default 12-JG Removal

    What is the best way to support the rear of the engine for a 12-JG removal? Any tricks to help removal and reinstall go easier?
    '86 Eliminator Sport 20, Chevy 454, Berkeley 12JG w/jetovator

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    Off Road Badass Bonzen's Avatar
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    I'm assuming the bellhousing/scatter shield for the driveshaft mounts or rests on the pump? If so it's like mine and I used a block of wood under the rear of the engine block. Honestly the biggest PITA for removal was cutting out all the old silicone that sealed everything, besides that pretty straightforward process and just nuts and bolts.

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by Dave01 View Post
    What is the best way to support the rear of the engine for a 12-JG removal? Any tricks to help removal and reinstall go easier?
    Would assume this is a three point mount , if so and no shop crane is available to lift the rear you might use a small bottle jack with appropriate block of wood to put a bit of upward pressure on the rear of the engine to gently lift 1/4 inch or so then wood underneath the base of the bell hsg till ready to reinstall , the engine is actually somewhat balanced for and aft and it doesn't take much call if you need more help

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    Member Dave01's Avatar
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    Yes, 3 point mount. I assumed it carried more weight, and was nervous about carrying the weight on the hull bottom, but sounds like it will be fine.

    I could use a come-a-long to lift, but the boat is on the trailer so will move as I climb in and out. Suppose I could put the trailer on jack stands.
    '86 Eliminator Sport 20, Chevy 454, Berkeley 12JG w/jetovator

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    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by Dave01 View Post
    Yes, 3 point mount. I assumed it carried more weight, and was nervous about carrying the weight on the hull bottom, but sounds like it will be fine.

    I could use a come-a-long to lift, but the boat is on the trailer so will move as I climb in and out. Suppose I could put the trailer on jack stands.
    Dave honestly dont work to hard on this , its really simple your talking very minimul lift and effort here Tom

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    Off Road Badass Bonzen's Avatar
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    Yeah like Tom said, it's super simple. Support engine with block of wood under motor and unbolt bellhousing, driveshaft and jet pump. The motor will almost balance on the two side motor mounts without any additional support.

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    tintingsandiego krusn56's Avatar
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    I'd move the motor forward an out of the way to set the pump back in nice an easy... I have the short drive from a 3pt mount an have a 4 now. Way better to just move it forward out of the way.
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