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Old 06-21-2009, 05:11 PM   #1
H23VTECBB1
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Default JDM H23a Vtec Swap Into 96 Accord EX

Okay,Some background information on myself.I have successfully completed many H series swaps into preludes and am very confident in myself when it comes to H series engines.So, when a friend of mine came to me and asked if I could swap the Jdm accord wagon H23a Vtec into his 96 accord I said yes.He has already bought the necessary parts for the swap Engine,trans,clutch and so on.

Now I know with some of you guys you are using an h22 intake manifold instead of the factory h23a manifold because of sensors and egr problems (from what Ive read here on H-T)If it is a problem it can be addressed as I have a spare h22 manifold he can use.Now I had planned on using his factory F22 harness as I believe it would be easiest,since its already wired for Vtec, I also know that some wires may or will have to be extended and that isn't a problem.


But one problem remains the knock sensor and the crank sensor on the h23a.I dont know if the factory f22 harness has the wire for the crank sensor down on the oil pump like OBD-2 preludes or not so that is one of my questions.What can be done about that,another question is about the knock sensor.Should I just run a wire from the knock sensor to the correct pin on the ecu pin out.The car will be run on either a OBD-2 p13 Or a conversion harness with an obd-1 p13 Until the owner buys a p28 and has the engine tuned

Also another Question I have is about the power steering.I have heard that on accords that you have to have the prelude fitting brazed onto the accord power steering when doing and h23-h22 swap, is this true or is there another way around this .

All info will be appreciated,Although experienced accord owners that have completed this swap and H22 swaps alike will be preferred,I have searched but have found only a little info on this swap being completed.I know it this engine will bolt in just fine after the driver side prelude mount is modified to finesse into the pocket. Thank you guys for your time and effort in advance.It is very much appreciated
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Old 06-21-2009, 05:19 PM   #2
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

About the Knock sensor, yes, you'll have to add wires from the sensor to the ECU pin out. And about the P/S, for my H22 swap, all I did was grab me a 97+ Prelude P/S Bracket to retain my stock p/s pump and line. That was all. Just the bracket and everything will mount into places. I'm not sure about the crank sensor. I don't think it'll matter because my H22 is a OBD2('96 Motor) engine, and I used my OBD1 F22 harness with no problems whatsoever.

If he gets a p28 ecu, he will not need the knock sensor because p28 don't come with them.
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Old 06-21-2009, 05:42 PM   #3
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

Thanks Nus_dogg,Ill tell him to pick up a 97 P/s bracket.On your swap was your car obd2 or obd1. It sounds like you used a obd 1 distributor and a obd1 computer with your obd1 f22 harness. Am I correct on what you did,I am also assuming that your car was obd1 from the factory.
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Old 06-21-2009, 05:50 PM   #4
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

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Thanks Nus_dogg,Ill tell him to pick up a 97 P/s bracket.On your swap was your car obd2 or obd1. It sounds like you used a obd 1 distributor and a obd1 computer with your obd1 f22 harness. Am I correct on what you did,I am also assuming that your car was obd1 from the factory.
Yes, Mine's OBD1 from factory since its a 1994 model. Everything is OBD1 except the JDM H22 which is a OBD2 motor and it works with my OBD1 harness. I'm running a p28 chipped with H22 base.

The distributor was original(OBD2) and came with the motor, so I didn't touch it at all. Everything was plug and play.
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Old 06-21-2009, 09:35 PM   #5
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

Make sure you have a backup plan or two for that p/s pump bracket. Apparently they're hard to find and the dealers dont even stock them anymore.
GL and dont forget to post up the end result of the swap
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Old 06-22-2009, 01:54 AM   #6
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

Wow, seems like people is a little more friendly here then on the other forum, I can't say which one though. Good luck making the swap!!
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Old 11-07-2009, 05:26 AM   #7
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

I have a 99 accord with a jdm h23a my tranny fit. My distutor don't put in what's up with that I dont know what to do ?? Help me!!!!
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Old 11-07-2009, 01:34 PM   #8
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

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I have a 99 accord with a jdm h23a my tranny fit. My distutor don't put in what's up with that I dont know what to do ?? Help me!!!!
Wait, so you're saying that your JDM H23A Distributor don't fit? Are you talking about the H23A VTEC or Non VTEC?
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Old 11-07-2009, 02:22 PM   #9
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

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Originally Posted by nus_dogg View Post
Wait, so you're saying that your JDM H23A Distributor don't fit? Are you talking about the H23A VTEC or Non VTEC?
It don't pug in what do I do ?
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Old 11-07-2009, 05:29 PM   #10
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

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Originally Posted by mozartking View Post
It don't pug in what do I do ?
What year is the H23? Might be due to OBD 1 or 2.
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Old 11-07-2009, 05:53 PM   #11
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

97-01 and it is v tec. The distibutor that came with tha motor doesn't fit the old wire harness. But everything els does ....
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Old 11-07-2009, 11:33 PM   #12
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

I used my old harness for the stock motor 4cy ex. The distutor is holding me back it has 8 pron pug and my harness is 4 pron pug so do I rewire or what cuz I'm loss and my boys help!!!!
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Old 11-08-2009, 12:26 AM   #13
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

One of my buddy has the same problem too. He swapped in a JDM H23A VTEC into his 97-01 prelude and the only problem he has is the distributor plugs just like yours.

What he did though was used a H22 distributor which I believe should plug right into the stock harness. Try that.
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Old 11-08-2009, 01:35 AM   #14
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Default Re: JDM H23a Vtec Swap Into 96 Accord EX

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Originally Posted by nus_dogg View Post
One of my buddy has the same problem too. He swapped in a JDM H23A VTEC into his 97-01 prelude and the only problem he has is the distributor plugs just like yours.

What he did though was used a H22 distributor which I believe should plug right into the stock harness. Try that.
I check it at auto zone and it has 2 pugs and 1 I need 1 pug that has 4 proms. Or can I us h22 and leav the othere pug unpug? And I thing I show 5 proms on the h22 distributor And it has a extra pug it cost 250 that why I didn't buy it yet trying to ask around ....
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