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There is a metal tube and a rubber type boot. However it seems loose

I have yet to be able to find a picture of what it should look like

I have my lower off and looked up at water pocket housing and this is what I saw . To me it does not look right..is this normal?

This could be an issue and partial block I'm assuming...can I just straightn that rubber boot and slide water tube in

So if it corroded and squeezing the rubber hose insert and restricting flow like I've seen on posts here what do I do

I'm curious about the raw water inlet at transom on inside of boat. I tried running some wire through it and didn't seem to wanna go. There are 2 bolts holding a flange on. Does that brass inlet pipe come off?

Right ok I'll give the hose a whirl

Do I really need to have raw water and closed cooling. Is there any benefit or can I get rid of the closed cooling and run raw water only

Are these normal...like are the fins going the right way

I just took the raw water hose off of hx and ran vinegar through it and it drained really slow back out of the system..can't imagine that's normal

Thank you for your help

No there isnt

What thermostat house would you suggest

They get pretty warm ya...there's just the 2 man hoses and one smaller going to pump...

The hose that has t runs from exhaust elbow...the other is from lower end cap back of manny

I'm not an artist but here it is lol

I run salt mostly...I've done flush and it was all clean and clear. The hoses are warm yes but never hot. New thermostat 140 degree. New cap..14 psi

Alright so took boat out today and it read hot and filled expansion tank...the fluid was not hot I could stick my finger in the heat exchanger without burning myself...if I slowed down and put it into neutral and cracked the cap the expansion tank would drain back in hx...so confused

I pulled my end caps of exhaust manifold as well as elbow and found these

Just the 2 hoses that run to back of the exhaust manifold. What should my heat exchanger look like.