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Carb spacer 1 or 2 on HP500 merc

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Carb spacer 1 or 2 on HP500 merc


Old 01-22-2019, 05:42 AM
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Join Date: Oct 2002
Location: CT
My Boat: 1987 Sonic 30 SS 1998 45' Wellcraft Excalibur
Posts: 1,066

On my builds we tried a 1'' 4 hole and a 1'' 4 hole super sucker, the super sucker made 6 hp + 11ftlbs more torque than the plain 4 hole, not really significant on a boat but it was something. kicking myself for not doing a pull with no spacer.
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