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Old 09-22-2008, 03:28 PM   #1 (permalink)
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This article is an overview of the GSR B18C1 engine's cooling system. Following is a simple diagram of the system the thick black lines connecting components represent flexible hoses.



The following pictures and diagrams show the locations of the components in the system.



Components connected to the block:



Heater components:



Throttle body and intake manifold components:

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Old 09-22-2008, 04:06 PM   #2 (permalink)
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Isn't the IACV on the electronical part of the engine, it doesn't touch the cooling.
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Old 09-22-2008, 11:03 PM   #3 (permalink)
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Nope, coolant flows through the IACV. Look at the article for cleaning it and you'll notice that you have to unhook 2 coolant lines from it to remove.
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Old 09-22-2008, 11:57 PM   #4 (permalink)
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You left out the throttle body; between the IACV and the head.

on a side note; for turbo water sources, where would be optimal locations to tap for good flow? Afer checking out this diagram I was thinking the Head near the cam seal as a source and a water pipe bung for the return.

I must admit, I always thought the flow was in the opposite direction through the connecting pipe... learn something new every day!
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Old 09-23-2008, 12:07 AM   #5 (permalink)
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What would really be helpful is direction of flow for all lines
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Old 09-23-2008, 11:32 AM   #6 (permalink)
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Sure. I'll add some arrows for clarity. I studied the helms manual which only has the exploded view to get this. I'll add the throttle body.

Here is the updated version.

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Old 09-23-2008, 04:11 PM   #7 (permalink)
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Quote:
Originally Posted by drcheap on Sep/22/08
Nope, coolant flows through the IACV. Look at the article for cleaning it and you'll notice that you have to unhook 2 coolant lines from it to remove.
Sorry I didn't remember, did mine 4 month ago and well I only remembered that I unhooked my electrical cable but while reding you I remembered touching coolant but I'd like to know is all the cooling on the B18B was a lot like the ZC Dohc 4 Gen because one of my friend always brag about it... and I don't even know If it's real ... still I know that the ZC was a bit ahead of it's time ..... but old theses days around 8-)
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Old 09-23-2008, 11:10 PM   #8 (permalink)
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Quote:
Originally Posted by JeremyWilson on Sep/23/08
Sure. I'll add some arrows for clarity. I studied the helms manual which only has the exploded view to get this. I'll add the throttle body.

Here is the updated version.

Next step is to turn it into an article. PM MorningZ.
This with some real life pictures would be an excellent reference for teg owners.
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Old 09-24-2008, 08:25 AM   #9 (permalink)
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I'll see if I can scour the site for pics. Sometimes it's helpful to see the big picture like this.
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Old 09-24-2008, 10:35 AM   #10 (permalink)
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Diagrams like this are great...they really help illustrate why troubleshooting a problem can be tricky.
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Old 09-24-2008, 04:14 PM   #11 (permalink)
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Here is a corrected version along with some pics:





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Old 09-24-2008, 06:25 PM   #12 (permalink)
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This article is an overview of the GSR B18C1 engine's cooling system. Following is a simple diagram of the system the thick black lines connecting components represent flexible hoses.




The following pictures and diagrams show the locations of the components in the system.



Components connected to the block:



Heater components:



Throttle body and intake manifold components:

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Old 09-18-2012, 11:17 PM   #13 (permalink)
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Hello everyone. I know this topic is 5 years old but I have a question I cannot find an answer to. I have a built b18c1, right now I've noticed that my coolant hoses aren't pressurizing up. Now I changed my radiator cap, I have no leaks at all, It's not burning coolant, its not overheating, both coolant hoses get really hot, I did not see coolant coming out of the weep holes on the water pump any ideas?

The motor is a fresh build with only 12k on it. It has arp headstuds, and a brand new cometic headgasket.

Nevermind it was a clamp that somehow managed to loosen up a little not enought to lose coolant, but just enough to lose pressure.

Last edited by RoachGSR; 09-19-2012 at 04:32 PM.
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