Please help me ID oil/water ports
 

Because
1) mama did raise a fool, and
2) I searched, but didn't find a concrete answer Are these ports water or oil? Or one of each?
https://cimg7.ibsrv.net/gimg/www.mia...59bf6a97df.jpg
https://cimg0.ibsrv.net/gimg/www.mia...1996b02a69.jpg
https://cimg1.ibsrv.net/gimg/www.mia...dca9e5858a.jpg
Water pump neck
https://cimg2.ibsrv.net/gimg/www.mia...48fe4698ce.jpg
https://cimg4.ibsrv.net/gimg/www.mia...dcc1bd7f06.jpg

Plus, two questions.
The collar on the water neck of the reroute doesn't have a water port (to the heater core).

Question 1.
Since my turbo isn't water-cooled, could I use one of these ports on the rear of the block to feed to heater core?

Question 2.
What is that little barb on the water pump neck for, and would I be able to mount the p/s bracket (and the A/C) without swapping out the water pump neck?

Thank you, all.
Sincerely,
-Al, the village idiot.

https://cimg1.ibsrv.net/gimg/www.mia...546bfedcde.png


Since the mixing manifold (at water pump inlet) was also removed and replaced with that aftermarket part, I can pretty much guarantee that the car that engine came out of had no heater core.



Yes, the one at the flywheel end labeled "Water out to turbo." Note that it won't be as warm coming from this location as it would have been coming from the head.


The barb on the front would be the return for water coming back from the OEM oil cooler (if fitted), and the thermovalve on the intake manifold and preheater on the underside of the throttle body.

I seriously doubt that power steering or A/C will fit with that water inlet neck. Since you want those, and also a heater, I suggest you remove that piece and replace it with an OEM mixing manifold. You'll also need the OEM pipe which runs from the mixing manifold, back along the side of the block just below the exhaust ports.

If I were you, I'd pop that water outlet off of the back (flywheel side) of the head, and verify that there's a thermostat in there. Probably replace it with a new one while it's accessible.

Also, replace the little black rubber cap which is blocking a nippe that's not visible in the photos. It's just below the coolant temp sensor on the flywheel side. They get old and leak, and are a bitch to replace with the engine in the car.

Understood!

Joe, thanks very much for taking the time to answer.
Seems like the best solution would be to take my "other" reroute collar with the water nipple to the heater core, and seal off the "water out to turbo" inlet.

Again, greatly appreciate the guidance, sir!

Also, if you have a ball-bearing turbo, you will want to install a restrictor inline with the "oil out to turbo" fitting. That port is fed from the same relatively narrow channel which delivers oil to the rear main crankshaft bearing, and a ball-bearing turbo will allow way too much oil to come out of the block.

If you have a sleeve-bearing turbo, you're probably ok running without one. No personal experience there, just anecdote.

Thanks, Joe, it's not a BB unit.

:-P