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I recently swapped a D16Y8 in my 1997 Honda DX that originally had a D16Y7 in it and I have two lines that I can't figure out





Pictures here ^

One is a coolant line that is supposed to go to the top (or maybe bottom)? of the IACV. One is coming from by the thermostat and I think the other originally came from the back of the block but I don't see a nipple on the back of the Y8. Maybe it's there and I can't see it but I removed the fuel rail and still don't see one.

The other one is underneath the intake manifold next to where the PCV hose leads. I can't figure out where this one goes either?

Please help me!
Thank you!
 

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One line goes from the thermostat to the iacv. The other side of the iacv goes to the back of the block. There's a larger pipe there that cool at flows through. It has a nipple sticking out of it.
 

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Discussion Starter · #3 ·
I'm having a hard time seeing it, I think I'm going to pull the whole intake and take a look. Any idea on the vacuum hose? I've looked all over the place and I can't see where it would possiblly connect to. Maybe when I have the manifold off I'll see it.
 

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BATSLOMAN GIVES NO FUCKS.
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use a y8 intake
 

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D16Y7



D16Y8 (Manual)



D16Y8 (AUTO)

 
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