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-   2nd Generation Specific (1986-1992) (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/)
-   -   Vacuum line for twin scroll (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/vacuum-line-twin-scroll-426634/)

bigturbo 05-16-05 11:18 AM

Vacuum line for twin scroll
 
I was thinking about it yesterday and I am in the middle of my turbo swap. im using an external wastegate. My question is could I use the vacuum line that used to feed the twic scroll actuator to feed my wg?? Where does this source of vacuum come from?? If nec I will run another t off the bov but I already used it for the boost gauge. And it would look cleaner because of the location of the twin scroll actuator. So let me know what everyone thinks.

bigturbo 05-16-05 01:36 PM

bump

dr.jones63 05-16-05 01:42 PM

Will the banjo bolt mate up?

bigturbo 05-16-05 02:06 PM

I dont know what you mean the fitting on the wastegate is a barb one and the twin scroll used a hard line I removed with the manifold that feed to a vacuum nipple. I have no problem hooking up a regular vacuum line just need to know waht the source is

Whizbang 05-16-05 02:08 PM

the vac line for the twin scroll soleniod vavle thingy comes from under the intake manifold by the primary fuel rail and between the two oil injectors.

bigturbo 05-16-05 02:26 PM

ok then it should be an accurate source of engine vaccum that I can use to feed the wg I think.

Whizbang 05-16-05 02:31 PM

yes

kick7ca 05-16-05 03:41 PM

Doesn't that line go through a selonoid? - meaning it will only be a source of vaccuum when the computer tells the twin scroll to switch.

gonzz 05-16-05 06:12 PM

Yes, the green solenoid on the rat's nest does the switching. Ther is alaso a one way valve that's needed (also near the solenoid)

J-Rat 05-16-05 07:38 PM

That is a SWITCHED Vacuum source, do NOT use it for your wastegate! That line has NO signal on it until above a certain RPM.

Whizbang 05-16-05 08:29 PM

well mine is kinda different. the feed for the soleniod is run directly. i mean directly to the actuator. emissionsless here.

ryderX 08-27-06 10:35 PM

i know the thred is old but, ok so i hook a vac line from the twinscroll to the nipple on the back of the LIM thats in the middle of it, there is 2 nipples back there i belive ones off center.

edit: for got to say that i did the rats nest removal thats why im asking, i dont know where to hook the vac line to


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