Closed Cooling Question.
 

I am installing a Closed Cooling system on my boat. The engine has been in fresh water for 23 years (300 hours), and this past summer (july and aug) was in salt water (50 hours). Thats it. I bought a Closed Cooling system this week and was wondering what should I do to flush my motor out before installing this system? I heard it is bad to have antifreeze mix with salt. Anything I should do other than run freshwater through the motor before installation. Please help!

Thanks,
Steve.

prestone superflush, then baking soda and water to nutralize acids and salt residue. I have closed cooling on my engine. did same thing ran salt then installed closed cooling.

Was it worth it for you?

23 year old boat and dumping money into a cooling system. IDK??

Got the system for a great price. I am going to be putting a lot of hours on this boat, (50-80 hours a summer) and in the salt water. I want to make sure the motor runs mint.

Steve
With the amount of time you and Chris run your boats,I think it's a great idea.Did you find the system used? How is the exhaust upgrade going? I should be out there week after mother's day.

Jeff THANK YOU! Its awesome. I was done with the system (came out awesome, I really cant thank you enough) but then I got a closed cooling system for short money (new in the box the guy just didnt feel like putting it in). So now this weekend I will put that in and a few other things and the boat is in the water. I think its a great idea considering what salt does to the engines. I will keep you posted, even with pictures.
http://https://www.facebook.com/phot...type=1&theater

Below is the picture of it.

Steve
Glad to see the exhaust tips worked out for you. Drop the drive off at my shop and we can strip it, put a killer paint job on it,and a couple of #6 decals,so everyone will know you ain't f$cking around!!:lolhit: Looks good,see ya this summer.

I have out drive paint, I was thinking just sanding it down and putting that on. Any thoughts on doing that? I would hate to tie you up or anything.

sure was. I run 180 degree thermostat which makes more complete cumbustion, also I'm running a 406 sbc which have always had cooling issues 14lb cap also my stainless marine manifolds ar also closed cooling so they should last forever.also winterizing is a no-brainer

I just finish putting mine in. Seems to have no leaks and seems to work. Im getting the water through the exhaust. My question is this:
I ran it and the temp barely hit 160. But for the 10 min I ran the boat the manifold where hot, can only touch then for 3 seconds before it burns, the thermostat housing (its a T now) was hot. The cooler was warm (seemed like the bottom was colder than the top), hoses where hot and what not. Is it normal for it all to be hot like this, esp the manifolds? It seemed to be a steady hot, the temp barely got to 160. It was quickly too. I got kind of worried. I ran it twice, first for 10 min shut it down for a few and started again for 7 min. Same thing both times.

Before when I ran this it didn't get so hot so quickly. Why is this getting hot so quickly and with it being hot is it ok? Any help or opinion is a great help!

ttt