Is there anything after market that I can buy to retro my 5.7 s with closed cooling so that future "consumables" to replace or inspect would only be risers/elbows? The exhaust manifolds would pass antifreeze as well as engine block and heat exchangers. The only retro-fit I have been able to find so far would pass raw sea water through manifolds AND risers/elbows. Block and heat exchangers would only contain antifreeze coolant. Perhaps there is a reason why manifolds MUST have sea water passed through them as well. Perhaps too hot???????
I have owned 4 MC I/Os cooled with raw sea water and religiously flushed with fresh water after trips in salt water. Risers/elbows are the first to clog or restrict water flow. They are easy to inspect by "touch." If one side is hotter than the other, it usually means a passage is clogged or beginning to clog and you should remove and INSPECT and clear passages, if you can. They can be a pain in the butt to clean or unclog. I have never replaced an exhaust manifold due to leakage. I suspect risers fail as they are more exposed to hot gases and sea water.
Nonetheless, I am looking for a closed cooling system, where in the future, I would only have to inspect and replace risers/elbows. Any suggestions???
I have owned 4 MC I/Os cooled with raw sea water and religiously flushed with fresh water after trips in salt water. Risers/elbows are the first to clog or restrict water flow. They are easy to inspect by "touch." If one side is hotter than the other, it usually means a passage is clogged or beginning to clog and you should remove and INSPECT and clear passages, if you can. They can be a pain in the butt to clean or unclog. I have never replaced an exhaust manifold due to leakage. I suspect risers fail as they are more exposed to hot gases and sea water.
Nonetheless, I am looking for a closed cooling system, where in the future, I would only have to inspect and replace risers/elbows. Any suggestions???
