Hooking up a Hot Water heater to raw water 318

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barkleydave
Site Admin
Posts: 371
Joined: Sat Jul 12, 2014 6:18 am
Location: Kentucky

Hooking up a Hot Water heater to raw water 318

Postby barkleydave » Fri Apr 05, 2019 11:32 am

It has been a long time since I have been on the forum. Health issues pretty much limited my boating last season. Back up and going strong!

Anyway time for spring commissioning. My Raritan OEM Hot Water heater finally rusted out. Gee only 31 years of service!

I would like to replace it with a heater that is 120V and also see all now have heat ex-changers. Doe anyone have a drawing showing where to run the ex-changer lines on a Chrysler 318 Raw water cooled engine.

It would be nice to have it heat water underway.

Thanks!

Barkleydave
1987 Marinette 29 FB Sedan
Retired Boat Accident UL and USCG trained investigator
Retired USCG Captain

jralbert
Site Admin
Posts: 647
Joined: Fri Jul 11, 2014 9:15 pm

Re: Hooking up a Hot Water heater to raw water 318

Postby jralbert » Fri Apr 05, 2019 12:02 pm

Glad to hear you've recovered.

First source would be Raritan - their units have gone into almost every kind of setup one could imagine. And it would be great to post the results and a how-to once you've done the project
-joel-
former owner 1988 '32 FB Sedan
Chesapeake Bay
twin 318 / 240 hp
Potomac MD

barefoot99
Tin star
Posts: 58
Joined: Sun Jul 13, 2014 9:44 pm
Location: Cincinnati OH

Re: Hooking up a Hot Water heater to raw water 318

Postby barefoot99 » Mon Apr 15, 2019 2:28 pm

Inlet line off the intake manifold , return line back into engine circulating pump suction.

Pull the allen wrench fitting out next to the bypass line on the pump and pipe in the water return there. Use PB blaster to get it loose, engine warmed up. That way you are on the discharge (intake manifold) and suction ( Pump volute) sides of the circulating pump, regardless of t-stat position.
SUP !
1982 32 Sedan FB
2028 hrs
360's(rebuilt)-Edelbrocks, MSD
Raw water cooled
Norris Lake
Speedwell,TN.

barkleydave
Site Admin
Posts: 371
Joined: Sat Jul 12, 2014 6:18 am
Location: Kentucky

Re: Hooking up a Hot Water heater to raw water 318

Postby barkleydave » Tue Apr 16, 2019 8:25 am

Ok thanks... A picture of a setup would be helpful..
1987 Marinette 29 FB Sedan
Retired Boat Accident UL and USCG trained investigator
Retired USCG Captain