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Hot K exhaust elbow

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Hot K exhaust elbow

Post by Nauti-Chris » Fri Jan 14, 2022 3:58 pm

I have a newly rebuilt Model K engine. The first on water test the exhaust elbow was hot and bubbled the paint and had a burning smell. Water temp gauge showed in normal ranges. I have read this is normal but does anyone have a suggestion for ways to keep the exhaust elbow a little cooler? Thanks

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Captain Nemo
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Re: Hot K exhaust elbow

Post by Captain Nemo » Sat Jan 15, 2022 9:07 am

Not unusual. The elbow will get pretty hot towards the flange at the manifold where the cooling water doesn’t reach. The burnt paint there does look unsightly but it’s normal. I have bronze replacement elbows which I leave unpainted, they gain a nice patina.
Boats are to be made of wood, otherwise, God would have grown fiberglass trees.

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Re: Hot K exhaust elbow

Post by drrot » Sat Jan 15, 2022 10:41 am

What Captain Nemo says is correct. You don't want water in that area as it may get in to the internal part of the engine.
Jim Staib

1947 Penn Yan 12' Cartopper WXH474611
1950 Chris-Craft 22' Sportsman U-22-1532
1957 Chris-Craft 26' Sea Skiff SK-26-515
1968 Century 17' Resorter FG-68-174

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