Re: 77 23' Savage
Spacers.......on inboards and I/Os the engine is down in the hull.....the exhaust manifolds have risers on them...they go up...and then down to the exhaust...through the prop usually for an I/O, or through some muffler system and transom for an inboard. The spacer raises the height of the riser even higher....that's so a wave doesn't force water into the engine through the exhaust...there are flapper valves in the exhausts as well....but it's all to keep that evil water out.
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