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    engine overheats at idle

    1986 stingray 2.5 gm aplha 1 outdrive first time in water and it is running very hot.at idle it runs hot , cruising around 2000 rpm it is fine,checked impellar in outdrive not torn new water pump on engine when running at higher rpms it gets hot also
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    alpha gen 1 new upper gear set humming

    just replaced upper gear set and have a slight humming noise. I installed using shimming tools and set driven & drive gears to .025 The only thing I could think of is a bearing humming since I used old bearings and races.
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    new upper gear set humming

    new upper gear set humming just replaced upper gear set and have a slight humming noise. I installed using shimming tools and set driven & drive gears to .025 The only thing I could think of is a bearing humming since I used old bearings and races. 1986 stingray ss 2.5 gm mercruiser alpha 1...
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