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I'm cleaning up underneath my manifold, mostly all those hoses. One thing I didn't understand on how the system worked in the vacuum chamber. What is the purpose of the two hoses that go from the vacuum chamber to the ballance tube via two pipes? (two metal pipes on either side of the throttle body)

Can they be looped or pluged? I'm getting rid of the whole vacuum chamber assembly.

http://www.skylinesaustralia.com/forums/index.php?app=core&module=attach&section=attach&attach_rel_module=post&attach_id=377547

If I understand correctly, all these pipes do is allow a path from the vac chamber to the throttle body for idle control bypass (valve feeding from intake plenum to throttle body). So in theory they could be plugged?

At least thats what Idea I get following the valves i wanted gone.

Edited by Idon28
  • 7 months later...

easiest is to just run a hose from one pipe to the other, replacing the lower chamber with a bit of hose. If it is for a track car and you aren't interested in any vacum being available you can remove the whole balance tube but will need to tig the holes up on the runners.

Mine idled best with no a/c, no power steering and no balance tube, just the screw behind the throttle bodies.

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