Re: Water leak?? Help
under 3000 rpms it lets water run from the midsection to the heads to cool them evenly at low rpms but at or around 3000 rpms it opens to let the extra water from the faster turning pump go back out the midsection thru the exhaust to cool the exhaust better at higher rpms and hotter motor exhaust temp. it was only needed on southern motors you can put blank caps and remove it if you wanted. better yet trade it off the spare motor or just open it up replace the 2 o-rings inside it. easy fix.
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1978 V20 Cuddy w/ 225 Johnson. And Several other boat's
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