Coolant line connections

Discuss the RB20, RB25 and RB26 series engines.
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Dirty Dee
Posts: 360
Joined: Fri Jun 23, 2006 9:23 am
Car: 1989 240sx

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Hi. I'm in the process of finishing up vacuum and coolant lines, but I am missing some lines and wanted to verify how some of them hook up.

for the throttle body, does it go like so:

Image





and at the back of the block, do I unhook the blue line, and make a fitting to resemble the pink "h" to go to the turbo lines? And lastly, the red and green highlighted lines are for the heater correct?

Image



thanks for any help


User avatar
Dirty Dee
Posts: 360
Joined: Fri Jun 23, 2006 9:23 am
Car: 1989 240sx

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Anyone?

robbie2883
Posts: 605
Joined: Thu Jun 01, 2006 5:36 am
Car: 1998 RB25 Kouki

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you don't really need the lines running through the throttle body. they are more of an emissions setup and will actually heat up your air charge.

as for the other stuff...yes...looks like you have it right except the pink line. the large diameter goes to heater core and the turbo line tee's off of it


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