SirCygnus

iTrader: (1)

so i want to redo my vacuum lines and ivepretty much decided that i need a couple of things.


i need one completly 100% dedicated to the haltechs MAP sensor. and then i want to install a vacuum distrobution block for all teh accessories such as fpr, boost gauge, meth injection controller, and some other things.


where is a good source to feed the distrobution block???


i have an 1990 gtu with a s4 turbo engine. s5 turbo. the manifolds are all s4 as well (intake)

SirCygnus

iTrader: (1)

i guess ill tap into where the brakes are. thanks for.... nothing.

arghx

iTrader: (3)

tap into the ACV blockoff plate, it gets vacuum/pressure from both rotors.

SirCygnus

iTrader: (1)

oooooo. now THATS what im looking for. thanks man.

what about the location of the BAC block off plate?

HAILERS

I won't say anything about how I think the split air and turbo coolant plates are ID'd wrong or *** backwards. Won't say a thing.

joeylyrech

iTrader: (11)

Cmon HAILERS tell us why,im looking to do the same thing on my setup but i was thinking about using the rear big nipple that faces the firewall on a FD manifold but then i realize that nipple only points to the the rear rotor,any inputs?

Black Knight RX7 FC3S

iTrader: (7)

lol

yes it is backwards

i should tap into the acv block off plate for boost and vacuum, seems like a great idea!!!

HAILERS

I know NOTHING about nipples on a FD.

When installing a nipple(s) on the ACV blockoff plate, you need to drill a hole(s) in the plate, opposite where the original boost sensor got its vacuum or opposite where the passage is for the anti afterburn valves output or the anti afterburn valves input hole. Also you have to use a gasket b/t the plate and manifold and helps to install the spoked checkvalve, but that's not a must if you use a good gasket.

You can tell the anti afterburn holes by looking carefully and see the tiny hole in the primary intake ports. That's not very clear I suppose. Oh well.

HAILERS

My ACV blockoff plate jpg is attached. It's a little crude but shows the approx location for the three places that have vacuum that I mentioned in my post above. Actually looking in the intake manifold opposite those nipples, you will see the tiny holes in the primary runners that feed vacuum to the boost sensor and anti afterburn valve (internal to the ACV).

Oh, and the remarks I made about the blockoff plates being misidentified was in humor. Not a big deal at all. They are mis ID'd but that's not a big deal. Just being a wise ***.

arghx

iTrader: (3)

I'm sorry, the split air and coolant blockoffs are backwards. I made a note of that in the thread I originally posted the pic in, and I created a corrected pic as well.

You can tap off the BAC valve blockoff, it runs to the primary ports on both rotors. The s4 UIM has much smaller BAC valve holes (behind the blockoff) than the s5.

arghx

iTrader: (3)

when I tapped my ACV blockoff plate, I looked at the shape of the stock gasket and tapped this spot:



that seemed to work fine. I use it for my BOV.

SirCygnus

iTrader: (1)

lol. you guys are funny.


thanks TONS though.

HAILERS

Sorry, but there's no vacuum in that spot. That spot leads to the exhaust ports if the checkvalve isn't in place, and virtually nowhere if the checkvalve is in place.

I'll post later pointing to the right three places that have vacuum.

HAILERS

In my jpg of the holes, the one on the right goes to the front primary runner. The other two go to the rear primary runner.

The large holes are for non vacuum purposes. Never have vacuum on 'em.