Re: "Newer" 25/35hp OMC compatibilities

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October 21, 2015 at 5:00 am #25840
DAN ANDERSON
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    Aluminum plate is going to move a lot more than the stainless steel even in a non over heat situation. Aluminum by its very nature expands and shrinks more than steel. About 5 to 1. Exhaust gas breaths on the plate all the time the motor is running. Even with a good cooling system the aluminum will become brittle in a shorter time because of expansion and contraction. Aluminum is cheaper than stainless and motor companies would use the least amount of stainless they could if possible.

    Dan in TN