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89+ Motor into 87 Chassis, Can I open 6ports with NO ACV?

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Old 03-25-02, 08:57 AM
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Question 89+ Motor into 87 Chassis, Can I open 6ports with NO ACV?

Did a search.

Is there anyway around using an ACV but still retaining function of the 6 ports? I'm already using a RPM switch for the VDI since I'm using the 87 chassis.

I could have sworn there was some way around this using the air pump or something...but I think the ACV ties into the air pump.
Old 03-25-02, 01:38 PM
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aww c'mon your making me feel like a newbie
Old 03-25-02, 02:38 PM
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The AVC can be removed but the air pump must stay. The aux port and VDI actuators take their feeds from the air pump before the AVC. Study the 89 FSM, it's all in there.
Old 03-25-02, 03:16 PM
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Sweet,

Now all I have to do is find someone thats rigged up a rpm switch to the 6ports a la 89+ system. I know it's been done on the S4...
Old 03-25-02, 04:22 PM
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Originally posted by SoloIIdrift
Now all I have to do is find someone thats rigged up a rpm switch to the 6ports a la 89+ system.
Um, you've already got one. It's called the ECU...
Old 03-25-02, 05:37 PM
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'87 chassis...

Just rip all that crap off and rig up a linkage and a solenoid to pop the sleeves open, and control it from that RPM switch That'll be my plan, anyway...
Old 03-28-02, 12:02 PM
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Yes 87 CHASSIS, wiring all 87


If I just get a new ACV will the 6 ports open okay with the 87 stuff?

And if I get a header, will the 6 ports still open?
since the 89+ system does NOT use backpressure, right?
Old 03-28-02, 11:11 PM
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Originally posted by SoloIIdrift
Yes 87 CHASSIS, wiring all 87


If I just get a new ACV will the 6 ports open okay with the 87 stuff?

And if I get a header, will the 6 ports still open?
since the 89+ system does NOT use backpressure, right?
Old 03-29-02, 09:40 AM
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I have a pacesetter header and a hollow main cat (still have factory mufflers) my 5th and 6th open fine..
Old 03-29-02, 09:45 AM
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Originally posted by NZConvertible

Um, you've already got one. It's called the ECU...
Should be, unless he's using the 87 ECU with the 89 motor.
Old 03-29-02, 09:45 AM
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Yeah, but I mean if I get a header with the 89+ motor will it still be okay, is there a way to open the ports without the ACV on the 89+ engine
Old 03-29-02, 02:36 PM
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Old 03-30-02, 09:59 AM
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Originally posted by SoloIIdrift
Yeah, but I mean if I get a header with the 89+ motor will it still be okay, is there a way to open the ports without the ACV on the 89+ engine
Old 03-30-02, 05:20 PM
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Originally posted by SoloIIdrift
Yeah, but I mean if I get a header with the 89+ motor will it still be okay, is there a way to open the ports without the ACV on the 89+ engine
Anyone?? pleeeeeeeeeez
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