S2000 Under The Hood S2000 Technical and Mechanical discussions.

AP1 too AP¨2 engine swap

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Old Feb 10, 2010 | 09:29 AM
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From: laval
Default AP1 too AP¨2 engine swap

Ok so apparently the best idea for my engine from my mecanics point of view would be too slap a new engine in my AP1

Atm it is on a speedcraft turbo kit + AEM EMS ecu

I found a local deal on an AP2 complete engine and tranny but NO ecu ....what modifications need too be done for it too fit etc etc


thanks...hopefully plug and play
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Old Feb 10, 2010 | 10:11 AM
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You dont need the F22 ecu if your going to use AEM standalone
AFAIK its pretty much plug & play, Id keep the f20 around until the swap was complete in case you need some specific parts off of it.
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Old Feb 10, 2010 | 11:39 AM
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The fuel rail is slightly different, the trans output flange is different.

This only applies to a 04-05 AP2. The DBW 06 and later cars have quite a few more changes.

The speedo will be off.
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Old Feb 10, 2010 | 11:42 AM
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From: laval
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Originally Posted by Slows2k,Feb 10 2010, 12:39 PM
The fuel rail is slightly different, the trans output flange is different.

This only applies to a 04-05 AP2. The DBW 06 and later cars have quite a few more changes.

The speedo will be off.
I have the Ap2 fuel rail with the engine , Or would i need too conserve my AP1 fuel rail

And what do you mean by the tranny output flang? Meaning i need too use the AP1 tranny or the Ap2 one...The speedo being off doesnt realy bother me
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Old Feb 10, 2010 | 11:44 AM
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You need the output flange off your AP1 trans, and you can use thre AP1 fuel rail.

AP2's all use larger propshaft bolts.
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Old Feb 11, 2010 | 10:38 AM
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From: laval
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And lets say i go back too N/A could an 00 Ap1 Ecu be used?

So to be sure of what were saying i need a tranny peice + Ap1 fuel rail
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Old Feb 11, 2010 | 02:33 PM
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From what I remember, you can trim a small piece off the AP1 fuel line, and it will fit the AP2 rail.

Of course the AP1 rail would do the trick...

And yes you will need the output flange off the back of your AP1 trans.
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Old Feb 11, 2010 | 02:36 PM
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You can mod the AP1 fuel line to work with a AP2 fuel rail.
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Old Feb 11, 2010 | 02:49 PM
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Originally Posted by Slows2k,Feb 11 2010, 06:36 PM
You can mod the AP1 fuel line to work with a AP2 fuel rail.


Same time
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Old Feb 11, 2010 | 07:06 PM
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From: laval
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Thanks guys Also i might just go back and do the N/A thing and have an 00 Ap1 ecu, I ready that people used those on their 04-05 too run richer? would you recomend i do so or just buy an 04-05 ecu?


Anyone have a picture of the trany output flange? or when ill open it up ill know what were talking about
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