Rb26 Block Outlets

[zachscalais]

hi, ive searched but had no luck. I have a r32 gtr that had been converted to a single turbo when i bought it. the turbo was oil cooled only, im now changing to a garrett bb thats oil and water cooled.

the barb on the top alloy radiator return housing that the 26 use for the water return from the turbo's has been ground off and welded up. i can easily tap into the heater lines, however id rather not.

I plan to use the line that has been blocked in the first photo for the water feed

Basically i want to know if i can use either of the 2bungs in the block that are circled in the second photo as a water return. I know one if them is used as a coolant drain for the block but cant seem to find what the second one is for.

thanks for your help

[zachscalais]

nobody knows?

[s13_Skyline_inside]

they are both feeds to the turbo, im not running all that stuff under the manifold so ive just got a - fitting welded onto the other outlet you got there, ill have to have a look on my engine for the return, but i think once you take out the plugs one will be an oil feed for the rear turbo

[zachscalais]

both the bungs circled go through to the coolant system, im just needing to find out whether they both tap into the same galley or not, and if they are pressurised for feed or return. hope some one can help

[zachscalais]

finally found two pictures showing the bungs. I think ill just go ahead and use the top one. Would still be nice for someone who's done this to give a definite confirmation?