coolant hose routing

[rscocca]

I'm in the home stretch of having the engine all plumbed.
My question is about the coolant hoses.
What is the proper routing of the coolant hoses for a Windsor block and a Canton expansion/fill tank with Heating core?

The Expansion tank has a fitting on bottom and on side near top plus a barb near pressure cap opening.

I was told to hook the lower hose on tank to the lower water pump hose and the upper hose on tank to top of intake, but then how do I hook up heater core with shut-off valve?

Sorry for the long post, but I at a lose.

[rscocca]

Bump, Pretty please

[cavedog57]

Originally Posted by rscocca

The Expansion tank has a fitting on bottom and on side near top plus a barb near pressure cap opening.

I was told to hook the lower hose on tank to the lower water pump hose and the upper hose on tank to top of intake, but then how do I hook up heater core with shut-off valve?

Just did this with a Moroso expansion tank -- should work exactly the same.

The expansion tank should be mounted so that it is the highest point in your cooling system. Basically, this is a continuous purge system so that any air trapped in the cooling system will be "purged" into the expansion tank.

The fitting on the bottom of the expansion tank should connect to your water pump heater hose inlet 5/8" nipple (the lower one). I used a 5/8" hose x 1/2" NPT fitting on the expansion tank and standard 5/8" heater hose w/ stainless steel hose clamps at both ends.

The fitting on the side should be plumbed to the highest point in the cooling loop (either the intake manifold or top of the radiator -- in my case it was the radiator). If your intake manifold is higher than your radiator, install a hose x NPT fitting in the manifold, if not then you'll have to modify your radiator for a hose x NPT fitting. (I used ninety degree 3/8" hose x 3/8" NPT fittings at both ends w/ (guess what size hose?) 3/8" hose and stainless steel hose clamps.)

The barb near the pressure cap is an overflow relief -- when coolant pressure exceeds the radiator cap pressure rating the cap lifts and vents coolant to relieve the pressure (just like on your daily driver). Install a coolant expansion and recovery tank and plumb its bottom fitting to the barb (I used 1/4" hose and fittings).

Heater core with S/O valve? On a Cobra? Ha!

Seriously? Just plumb in the purge hose using a "T" fitting and relocate the S/O valve to the heater core. DO NOT place the S/O valve between the purge fitting and the manifold.

NOTE: If your radiator has a radiator cap with an overflow barb -- place a higher pressure radiator cap on the radiator and cap the barb!

Hope this helps. If you have any more questions, don't hesitate, am happy to answer if I know anything useful.

Dave