Intake Manifolds, I have two and one has an extra flange/nipple?
So recently I pulled the motor from my car, it's an EX but someone put in some version of a mini-me with a D15B7 Block and D16 Head. I recently picked up a new motor which is a full D16Z6 setup. Now the Intake Manifold on there and the old one look identical except one has an extra flange which I don't remember what it goes to, all I know is that it was clogged when I cleaned it out. It's located all the way to the left of the manifold if you are standing in front of it. I believe it's next to a heater line or some kind. If pictures are needed I can provide them.
nvm I got 3 different intake manifold, 1 with 2 nipples and 2 with 3.... depends how u wanna configure ur vacuum lines, use the 3rd port if u need to

Here's a image I found online, the arrow points to where I had a spare port. It's the large one, and three small ones in total, and the other has two, so I'm confused on the difference. I wish I could remember if I had all three running tubing.
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I know the bigger one is the coolant one, but there's a smaller one located right under it, that's the one I'm wondering about. Mine was filled with some kind of built up gunk.
i think thats the other coolant line i know i have a hose on mine when i did my intake swap on my y7 id have to go out and check where it is hooked up ill let u know if no one else answers
Thanks I appreciate it! I'm simply confused due to the fact this is the motor that's suppose to be in the car, so what on earth was the previous one hooked up to, haha.
so the little nipple ontop of the coolant line on mine leads to my throttlebody its a coolant line that goes to the throttle body 1 of 2 i have a D16y7 with a Y8 Manifold and a y7 TB so thats where it goes
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