2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

jdm s4 T2 into s4 chassis wiring

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Old Dec 22, 2009 | 01:26 AM
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MANSU_V36's Avatar
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jdm s4 T2 into s4 chassis wiring

spent 1 hour researching about it but cant find anything..
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Old Dec 22, 2009 | 02:58 AM
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Is the car a turbo II already or n/a. I have a S4 TII, and I purchased a JDM s4 13bt. You can use the usdm harness and have no problems. I went and purchased the "Corksport Wire Harness" and it works great. It beats havin a 20+ year old electrical system. Just dont do what I tried and try to hybrid the harness on the engine to the cars harness. The real issue I had was the brake booster, the nipple is different on the JDM.

Hope this helps
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Old Dec 22, 2009 | 03:34 AM
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where does the brake booster line attach to on the engine? looked thru the FSM but I can't figure it out.

Last edited by yomomspimp06; Dec 22, 2009 at 03:35 AM. Reason: worded incorrectly
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Old Dec 22, 2009 | 03:37 AM
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MANSU_V36's Avatar
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Originally Posted by Discokid
Is the car a turbo II already or n/a. I have a S4 TII, and I purchased a JDM s4 13bt. You can use the usdm harness and have no problems. I went and purchased the "Corksport Wire Harness" and it works great. It beats havin a 20+ year old electrical system. Just dont do what I tried and try to hybrid the harness on the engine to the cars harness. The real issue I had was the brake booster, the nipple is different on the JDM.

Hope this helps
car is originally NON TURBO

did u fix your break booster problem??
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Old Dec 22, 2009 | 03:42 AM
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i forgot to mention its a NON TURBO chassis

Last edited by MANSU_V36; Dec 22, 2009 at 03:57 AM.
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Old Dec 22, 2009 | 08:26 AM
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This was an s5 JDM manifold into an s4 T2. From the factory there is something screwed in there I think (I didn't have it), but I tapped the hole for I believe 3/8 NPT and used I think a 3/8 NPT --> 3/8 barb fitting. The factory T2 brake booster hardline comes in two pieces (don't remember about the n/a). I unbolted the one piece and ran a hose straight from the manifold to the hardline.

also ignore the rest of the stuff on here... there are a couple mistakes in the labeling that I fixed later
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Old Dec 22, 2009 | 04:01 PM
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arghx, whats goin on? Thanks for helpin me with the fuel pump, I had no problems. You the man!!



I have it circled in this pic here



... and here is a shot a lil further back

Its just a banjo bolt, so you can put a tee there instead
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