Rb26 coolant line re route

[Daverb26]

Rb26 single turbo. Does anyone know if i can re route a coolant line from the first pic under the intake manifold at the back.Around the back of the head to second pic at the back on the exhaust side of the block. Theres 2 holes the top one is my water return from the turbo. Can i tap into the bottom one. Any help would be greatly appreciated.

[Dobz]

If the turbo is water cooled then the water return goes to the manifold fitting and the hole in 2nd pic is plugged. If turbo is just oil cooled just plug up both holes.

I noticed in the 1st pic you have the oil pressure sensor hole plugged up, you planning on having any sort of oil pressure monitoring?

[Daverb26]

I ended up plugging both holes from the research i done. As for the oil pressure sender i have it going in for a new ecu and loom so they will install it then

[DiscardTheWeak]

Interested in the outcome of this question. Gone single turbo, and no longer need a rear turbo return, only the front return. Every normal after capping that rear fitting? Is that fittings only function, the rear turbo water return? I see that it tees into the heater tubes as well, is this a coolant path for closed thermostat operations as well? Thanks 

[DiscardTheWeak]

On 4/14/2017 at 7:40 AM, Daverb26 said:

I ended up plugging both holes from the research i done. As for the oil pressure sender i have it going in for a new ecu and loom so they will install it then

Pm’d

[WantGTR]

In the first pic, block off that barb.

Second pic, use that and use the fitting off the top radiator hose water outlet.

If just oil cooled. Block all water fittings

[DiscardTheWeak]

1 hour ago, WantGTR said:

In the first pic, block off that barb.

Second pic, use that and use the fitting off the top radiator hose water outlet.

If just oil cooled. Block all water fittings

Thank you for the response, this is what I was hoping for. I assume that means the 3/8” nipple on the heater pipe below gets capped as well? This is what confuses me, had it been just a return path for turbo coolant, I’d have no question to cap. However, that 5/16” nipple on the bottom of the plenum tees into the “behind head tubes”, which then terminates in the heater pipes. That is why, I was thinking it was more than just a turbo water return, and more of a closed thermostat bypass tube. For cold startup or something. I trust you that it can be capped, as others have said the same, I was just hesitant. Attached is a pic Which you can see clearly the hoses, and nipples I am referring too. 

[DiscardTheWeak]

I do not know why the lines show coolant flowing that direction however. That water pipes flow towards the back of the thermostat, not away from the thermostat, unless I am wrong.