Hey folks.
I'm new to post here, but been lurking for a while.
Let me jump right in - I have a 96 Prelude SI with an H23A1 motor.
Automatic tranny.

It needs a new motor, i can get another H23A1 locally, but it's out of a 94 SI with a 5 speed.
Question: Does the transmission type matter? Will my auto still bolt onto the new motor and work? I've never done a motor swap before, so this is completely new ground for me. And what about emissions? The 96 has OBD II, what about the 94? What would have to be done to pass emissions? The work will be done at a shop, but I want to know what all I'm getting into beforehand.

Any advice is appreciated!

Thanks.

 

Just swap out the sissy-tranny for the man stick and don't worry about it.

 

I agree with Kronn, you'll love it even more after you're done. Good Luck!

 

Regarding the transmission side of things, the engines are the same, so you can ignore the earlier unhelpful comments. It's okay as long as you can borrow a few parts from the old stuff.

The 96 engine is OBD2 though, which means that CKP and TDC sensors are on the oil pump reading off the crank pulley. The 94 engine won't have those. That's going to all need to be switched over which is a bit of a job (oil pump, don't let them forget the balancer shaft gear which the sensors read from).

 

blah, blah, OBD blah....
There wasn't H23A1 which was OBD2... It's OBD1. So they're the same engines.

 

wrong, there was an obd2 h23a1 for one year (in '96)

 

Any H-series tranny will work with any H-series motor. Even F-Series will bolt right up, but dont use f-series they are not as strong.

H23 manual trans has a long gear ratio, and the H22 manual trans has shorter gear ratio. If you get the h22 transmission your car will be slightly faster due to the quicker ratio. some of the h22 trannys comes with an LSD, limited slip differential which is very nice if your looking to have some fun and put more power to the ground. So if you managed to find one of those for a decent price get it but they are a little harder to find. I kept the h23 for the longer gears, i like it more for turbo.

 

Sweet. Thanks.

I found the 94 H23A1, and a 95 H23A3 from a European Accord.
One shop quoted me "about a grand" to do the swap. . . I think that's kinda high. I found out that one of my co worker's husband has a shop, so if he'll do it, it'll be cheaper, plus I can be there to help him, and also make sure he doesn't cut corners.

And as . . . uh, enticing . . . as it sounds, I'm gonna have to pass on the "man stick" advice. . . but thanks. I think.
Besides I'd just throw in an H22A if I wanted to switch to 5 speed.

 

I guess the A stands for Amy or Anna.

 

No. I just don't need a manual transmission to validate me as a man.

And right now I just need a new motor in my car so I can drive it again. Which means JUST a motor and not a motor PLUS an auto/manual conversion. I'm on a budget, and time constraints.

The name's Adam by the way. Nice to meet you.

 

Just prove it. I want to see OBD2 H23A1 ECU. Or a picture of a stock H23A1 with sensors on the crank... whatever

 

96 was an oddball year for the Prelude. It did use a fuel injector resistor and it did use an OBD1 dizzy. The blocks did not have the sensor on the crank. But it was OBD2. It used generic DTCs and were accessed through the 16 pin DLC.

 

The ECU should have different plugs then. I'd like to see such ECU.

 

When you find a motor can you let us know what you had to give for one, I am going to start exporting from Japan and I need prices to beat please.

 

how about different part #s?

2 37820-P14-A62 CONTROL MODULE, ENGINE No Color 1 1995 PRELUDE 858.92 618.42

2 37820-P14-A63 CONTROL MODULE, ENGINE No Color 1 1996 PRELUDE 842.53 606.62

 

how about different part #s in H22A1?

1993- 37820-P13-A10
1995- 37820-P13-A11
1996- 37820-P13-A12

Still not convinced

 

Well, I went to Hondas interactive website for Honda service and pulled up photos of the 96 lude ecu connectors and they are the standard OBD2 plugs. Why would yould think a 96 Prelude would be OBD1 anyway? All vehicles made for the US market for the 96 model year were OBD2. It was federal law.

 

Isn't this swap illegal because you can't have an engine that's older then the car itself? Or is that just another only in California law?

 

Really? I've never heard of. Anyway- I'd like to see a photo of H23A1 OBD2 ECU.

 

Just another reason why you shouldn't live in Cali.

 

never heard of anything like that but i wouldnt be surprised if it was another absurd cali law...

Id be more concerned about the vin numbers matching to be honest..you have to make sure everything is legit... i do know cops check that.. b18 type r integra motor in friends LS and the cop towed his car because of "suspicion of a stolen vehicle or motor".

 

Suspicion? He had a "feeling it was stolen? Thats f#cked up. Its more like suspicion of a bad cop.

 

Your an idiot, by LAW a 1996 vehicle HAS to be obd2.

 

pic

 

1