power steering second vacuum source

[shipkiller]

According to the 7mgte vacuum piping: http://www.cygnusx1.net/Supra/Library/EPC/291220/catalog.aspx?F=1708&P=6

the power steering seem to have two vacuum sources, the first being the accordeon hose, the second being the intake manifold.

Why does it need the intake manifold, couldn't those two go to the accordeon hose with a Y, could I plug the second one?

I don't have the metal pipe going across the front of the engine, I would have to make a hose that goes above the engine to the intake manifold only for the power steering

 

[IJ.]

The pipes to the pwr steer are an Idle up when it's at full lock so it doesn't stall, the pipe to the intake is acting like the Idle control and providing the engine with more air simulating cracking the throttle.

 

[shipkiller]

thanks for the enlightment IJ, now could this be bypassed or should I keep it at all cost

 

[IJ.]

Up to you most Mk3's don't have it as the nipples break off the valve and the valve is quite exe, I ran mine for years as it's nice when you have the AC on and parking

 

[shipkiller]

ahhh Now with a image it's all coming together in my head: http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=SR&P=39
I guess a simple hose from the idle up to the intake manifold will suffice, ugly but functional.
thanks

 

[IJ.]

Ugly doesn't matter you won't see it down there
(I'm guessing the stock line is only steel so in case you spit a belt it can't destroy it)

 

[shipkiller]

either that or reinstalling the big metal pipe across the front of the engine, wich is a pita imo