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2G re routing the turbo water lines?

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1Gina2G

10+ Year Contributor
810
2
May 6, 2011
Beaufort, South Carolina
hey there everyone, I've looked over this website for a really long time, whitch helped me decide to do a 1gina2g setup, that is with the 6 bolt block modified to hold the 7 bolt head. theres a few modifications that you already have to do to make things fit like cut the motor mount for the water pump ect. but I hae the motor running now, apparently you have to use T-connectors or something for the turbos water line because the water returnline from the turbo has no where to go to with everything elseplugged in. If anyone could show me how they redid there water lines that would be great..or if someone could just tell me whitch water lines i have to take off to get the turbo connected...
 
I assume you are using the 2G thermostat housing and water pipe as that will leave you one line short. The return line/hose (#15 and #16 below) should be routed to the water pipe (to the right of #7 in the diagram).

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Below is pictured a 2G thermostat housing. If you are concerned about the turbo having its own coolant feed, you can "T" off hole #1 or hole #2 so as to keep the sensors. If you aren't concerned about it, you can "T" off nipple B that leads to the oil cooler.

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what is exactly mean by "t-ing it off" ? Im not really sure exactly what should come off of what. Your guess was right though im using the 2g thermostat housing along with the 2g water pipe. I will take pics to show it as it is now, as soon as it stops raining
 
Here's what I think about your situation, the options I would look into. You can take it for what it's worth. I'm sure there are many other possibilities as well. If anything, maybe it will give you ideas about what to do. :thumb:

"T" off hole #1 (1/8" BSPT) or hole #2 (3/8" BSPT) in the thermostat housing by using a combination of fittings that will allow you to keep the sensor and run fluid through it.
The "T" would be something like this, though it would obviously require additional fittings to plumb up to the thermostat housing and to exit out to the turbo - Shop Watts 3/8" Brass Tee at Lowes.com

"T" off nipple B using something like this: Shop Vanguard 1/2" Crimp Tee at Lowes.com

Edit - There is also this option: http://www.dsmtuners.com/forums/cylinder-head-short-block/393748-2g-head-6bolt.html

2nd Edit - The thread sizes are not NPT, they are BSPT. Thanks to agentorange313 for the correction.
 
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so if i put a t connector in one of the senors, i could use that as the return? or should i make that the new feed?
 
NPT is not the right thread size for our cars, everything is BSPT.

You will need to tap the hole with a 3/8 or 1/8 npt for the fitting to sit properly.

If you are running a six bolt block are you using the 6 bolt waterpipe? They have provision on it already for waterlines, thread size - 16mm x 1.5. You can "T" into the thermostat housing for the feed, and the return would go to the water pipe.


goodluck
 
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Ah, I was afraid of that when I posted it and I'd just played with the thread sizes the other day. There was this thread recently, maybe that's what I was remembering: http://www.dsmtuners.com/forums/newbie-forum/401537-oil-filter-plug-blew-off.html. Anyhow, thanks for the correction, post above is edited for the right information - with acknowledgements.

He is running the 2G water pipe -- see post #3. ;)
 
NPT is not the right thread size for our cars, everything is BSPT.

You will need to tap the hold with a 3/8 or 1/8 npt for the fitting to sit properly.

If you are running a six bolt block are you using the 6 bolt waterpipe? They have provision on it already for waterlines, thread size - 16mm x 1.5. You can "T" into the thermostat housing for the feed, and the return would go to the water pipe.


goodluck

So I'm going to T'off at thermostat housing sensors for the feed, and its going to return into the water pipe, the side opposite side of the thermostat housing that also is connected to the oil cooler? Sorry i'm a newb so im not really getting how its going to work

Ah, I was afraid of that when I posted it and I'd just played with the thread sizes the other day. There was this thread the recently, maybe that's what I was remembering: http://www.dsmtuners.com/forums/newbie-forum/401537-oil-filter-plug-blew-off.html. Anyhow, thanks for the correction, post above is edited for the right information - with acknowledgements.

He is running the 2G water pipe -- see post #3. ;)

since i have a 2g water pipe, does that mean i cant return to the water pipe? Where exactly do i return to im confused?? WTF
 
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So I'm going to T'off at thermostat housing sensors for the feed, and its going to return into the water pipe, the side opposite side of the thermostat housing that also is connected to the oil cooler? Sorry i'm a newb so im not really getting how its going to work
...
since i have a 2g water pipe, does that mean i cant return to the water pipe? Where exactly do i return to im confused?? WTF

Here's a rough diagram of what I imagine T-ing off one of the sensors, about as simple as I can make it. The solid black lines are representative of proper fittings and hoses/lines that will connect everything together -- how you plumb it up is up to you. The dashed black line is your option for whichever sensor hole off the thermostat housing you want to use. Feed and return lines are clearly marked; you utilize the original return nipple on the water pipe. The "X" marks the original 2G feed line that you don't have with a 6-bolt block.

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I assume you are using the 2G thermostat housing and water pipe as that will leave you one line short. The return line/hose (#15 and #16 below) should be routed to the water pipe (to the right of #7 in the diagram).

You must be logged in to view this image or video.


Below is pictured a 2G thermostat housing. If you are concerned about the turbo having its own coolant feed, you can "T" off hole #1 or hole #2 so as to keep the sensors. If you aren't concerned about it, you can "T" off nipple B that leads to the oil cooler.

You must be logged in to view this image or video.

Is there any reason i cant Tee off of the hose going from the Throttle Body to outlet "C"????

I know this is super old but i cant find anything that says i cant T off from there. I'd rather not have to get the giant T pipes to come from the sensor outlet "2". Is the direction of coolant flowing differently there or something? Using a T from C just seems like the most logical option, which is why i assume someone wouldve said that if it was possible LOL
 
Is there any reason i cant Tee off of the hose going from the Throttle Body to outlet "C"????

I know this is super old but i cant find anything that says i cant T off from there. I'd rather not have to get the giant T pipes to come from the sensor outlet "2". Is the direction of coolant flowing differently there or something? Using a T from C just seems like the most logical option, which is why i assume someone wouldve said that if it was possible LOL

Why do you need a T? What are you trying to achieve?

This thread is from 2011. So im sure you looked into this topic prior to reviving a old thread.
 
Theoretically, no difference between B or C - both are feeds so either would work.

But I’m also interested in what you’re trying to accomplish here. Please do share.
 
Theoretically, no difference between B or C - both are feeds so either would work.

But I’m also interested in what you’re trying to accomplish here. Please do share.
is there a difference between C or 2 though? I assume everything on that side of the thermostat can be used . I just dont want to add all of the extra pipes like @1Gina2G did in his next post (https://www.dsmtuners.com/threads/changed-turbo-water-lines.402783/) if i can just T off of the hose going to C instead.

basically my 2G came with a 1G7Bolt motor and a mixture of 1g and 2g parts so its been a giant headache. Im missing an extra coolant line for the turbo.

I have the front turbo coolant line going to the water pipe, and this picture shows how i have my rear turbo line Tee'd off of "C"

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