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help with t2 2 na conversion (wiring)

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Old 08-24-03, 03:50 AM
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help with t2 2 na conversion (wiring)

ok ok please dont flame me. I've searched the forum and know all about the diff and tranny and all that. Here's my problem, my s4 t2 wrecked, gonna pull everything out and put it in my s5 gxl. I have everything at my disposal that I could possibly need. But I know that when the under dash wiring comes up, not what connects to the ecu but dash and atmospheric pressure sensor. Is there anyone that can give me a write up or tell me how to handle that wiring at that point? I emailed the guy in the archive about it. He said there's 3 harness' that need to be dealt with. I'm really bummed about my baby being down so if you can help it'd be much appreciated. Thanks in advance if you can help. Please email me at onetinyr@hawaii.rr.com.

THanks
tiny
Old 08-24-03, 03:08 PM
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Old 08-25-03, 04:28 AM
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someone please help and shine some light on the situation. thanks
Old 08-25-03, 01:18 PM
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no one knows anything on this subject? please help!
Old 08-25-03, 04:59 PM
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I'm guessing that lots of people know lots about this subject, but are not lending their services because of your laziness.
Old 08-25-03, 06:26 PM
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The only harness you need to swap is the engine harness (of course), I'm pretty sure that the rest of the harness are the same.
Old 08-26-03, 12:01 AM
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Originally posted by version13
I'm guessing that lots of people know lots about this subject, but are not lending their services because of your laziness.
Your reply is pretty damm rude.

What he wants to do, is not simple or easy. A S4 motor into a S5 car using the S5 wiring is very difficult, and not recommended.

Very few people (if any) on this board have done the swap he is attempting. He will need to get the manuals, compaire wires and figure it out himself.
Old 08-26-03, 12:47 AM
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sounds like a good idea in the revrse but, powerfull engine out, weak engine in...?
Old 08-26-03, 04:55 AM
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version13 if you know nothing on a subject it's best to keep your ignorance to yourself. If this is such an easy task for you why don't you lend a hand instead of try to belittle someone just looking for a little help? Obviously you know nothing and I feel this is your way of making yourself feel better for being incompetent. Mephis it's a t2 motor going into an n/a, so it's not weak to strong, it's strong to weak. thanks for the good responses and if anyone can help i appreciate it.
Old 08-28-03, 05:26 PM
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Sorry about that, I mis-read your post and thought it was S4 T2 into an S4 NA. And I do know about this subject. Sorry for the rudeness as Icemark calls it.
Old 08-28-03, 08:34 PM
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Originally posted by version13
Sorry about that, I mis-read your post and thought it was S4 T2 into an S4 NA. And I do know about this subject. Sorry for the rudeness as Icemark calls it.
It is better that no-one replies because no-one online has done it, than some of the bogus answers that pop up in the 2nd gen section, just because someone wants a reply or to up his or her post count.

There is nothing lazy about only someone with the right answer answering the question.
Old 08-28-03, 10:36 PM
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What year series five??

So I don't understand. You're not interested in anything to do with the ECU???? That's what I read. Just the????dash?????? Why would you say that??

Your going to use what harness?? The series five for the engine or the series four? And the series four ECU. But then again, for some reason I read the post and it says your not interested in the ECU. What gives?

I think if I were to do what your doing....I'd use the harness in the series five all the way. I'd print out the sheet in the fsm that shows what each and every pin does for the series five and compare it to the turbo series four and make the changes in the pinning or add/lengthen the existing wiring. But you said your not concerned about the ECU wiring. So that was a waste of typing this paragraph. You must be interested in the ECU wiring. I just can't read(again).

I'm not completly ignorant. I've put a turboii in a n/t car, but series four to series four. I more or less know/think the series five ECU plugs are different than the series four at the ECU. I think I could work around that and use a series four ECU in the series five. Just swap the series four connectors (three) to the series five wiring. Gee, it's easy to write that last sentence. So much for reality though.

So let's say a series five bac plug will not reach where the series four bac is on the engine. Just lengthen or shorten the exixting wiring. Splices (better to solder).

Yes. Screw changing harness's. Swap pins/sockets at the ECU plugs.
Old 08-29-03, 07:36 PM
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i have a s4 TII engine in my s5 gxl......i had a custom harness made but basically that was becuz i couldnt find a s4 turbo harness....i know they had to splice a few things in on the harness.......something with the power supply to the ecu......other than that im not sure
Old 08-29-03, 09:20 PM
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Well, Im going to step in here as someone who knows what he's talking about, but you guys arent going to like what Im gonna say.

The only real properway to do this swap, across series, is to use all the wiring from the original car. You're putting s4 t2 stuff into an s5 NA car? Gut every wire and electrical part from the s4, and install it into the s5. Then you will have a s5 body with s4 electronics, everything will operate just as it should, and all will be well.

Too much work you say? Well, go right ahead, hack it up, cut and splice wires, mix parts across series and model, and have fun trying to get everythign working again, or even fitting together at all.

See, that wasnt so hard, was it? :-)
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