Thermostat Housing 1990 454
 

I recently purshaced a 1990 baja 250 ES with a 454 that was conerted over to closed cooling and would like to restore it to fresh water.

Looking to replace the below housing that is the original and can't locate one that is identical.

http://i1201.photobucket.com/albums/...s/CIMG0615.jpg

Would this design perform the same functions? What are the white plastic pieces, look like check valves of sort?

http://i1201.photobucket.com/albums/...ns/Housing.jpg

I have this one used in great shape
http://www.perfprotech.com/store/ass...,1621-160.aspx

PM me your price and prefered payment form. I have Pay Pal.

Also need help verifying the plumbing for this.

Boat has Stainless Marine Manifolds with S/S Risers.

A=
B=
C=
D=
E=
F=

http://i1201.photobucket.com/albums/...CIMG0616-1.jpg

The thermostat housing you have is no longer available NLA. It is replaced by the new style with the brass "T" fitting and check valves (my photo).
$195.95
[email protected]
Dennis Moore
626-357-3573

A,B go to ex manifold lower water inlet
C,D go to upper ex manifold inlet
E goes to water pump
F hose from oil cooler.

all that being said why do you want to get rid of the closed cooling????

Good question because Closed Cooling is the hot ticket. I have two twin engine boats one supercharged with Closed Cooling and love it. My cruiser's Closed Cooling even does the exhaust manifolds (full system). Many advantages to CC and few drawbacks.

I also have a couple of those tsat housing assemblies with the brass tee and check balls if you don't come up with anything.

That's exactly what they are, check valves.

I've heard from some if you convert a raw water to closed loop if the motor was originally a raw salt motor the conversion can invite issues from pieces of scale breaking lose and clogging heat exchange etc... not sure if I buy that but like I said I've heard it

MD

New motor was installed about 6 years ago and the owner added the closed cooling as he was going to run some in salt water. The plumbing looks like chit. So I figured it was easier to plumb it back to what I am familiar with.

I will post pics. Might make sense to tidy up the closed cooling. My consern wa the heat exchanger condition and was thinking it would be a proactive move.

Oh and I run nothing but fresh water.