OMC to Mercruiser drive conversion?
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OMC to Mercruiser drive conversion?

  1. #1
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    Default OMC to Mercruiser drive conversion?

    hey guys so im new nto boats but have been a mechanic for 7 years so im pretty handy and figure things out quickly. i recently bought a 1989 Christ craft scorpion 18.5 foot, the boat originally came with a Merc 3.0v6 and an alpha1 drive. well the motor is long gone and what i have is an OMC 5.7 300 HP motor that i want to put in it. i can get the v8 geared alpha drive easy enough what else do i need to convert the OMC motor to go to the merc outdrive? i know i need the Merc bellhousing but will the flywheel i have work also i need the top part of the risers so they line up however i want to do through hull exhaust so how do i cap off the y pipe where it bolts to the drive, im not 100 percent on the through hull exhuast yet i just think it would really set the boat apart from the rest.

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  3. #2
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    Quote Originally Posted by Mechanix565 View Post
    hey guys so im new nto boats but have been a mechanic for 7 years so im pretty handy and figure things out quickly. i recently bought a 1989 Christ craft scorpion 18.5 foot, the boat originally came with a Merc 3.0v6 and an alpha1 drive. well the motor is long gone and what i have is an OMC 5.7 300 HP motor that i want to put in it. i can get the v8 geared alpha drive easy enough what else do i need to convert the OMC motor to go to the merc outdrive? i know i need the Merc bellhousing but will the flywheel i have work also i need the top part of the risers so they line up however i want to do through hull exhaust so how do i cap off the y pipe where it bolts to the drive, im not 100 percent on the through hull exhuast yet i just think it would really set the boat apart from the rest.
    Block off plate for the exhaust, alpha coupler for motor and merc belhousing oh and 1.47 alpha gen 2 drive?

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