Here is the deal, hope you can help

I got a 5th gen lude base 5MT for dirt cheap with a great body but 140k on the clock. Transmission is ok, The motor is rough and instead of trying to build it back I just figured I would swap it with something with low miles.


I am relativity green when it comes to preludes. SO my questions are

1. Can I swap in a type S H22 without modifying the harness
2. Do I need a new ECU as well? I am under the assumption that the motors are idetical in electronics and the type S just has more agressive cams and pistons etc.
3. Would it be stupid to buy the type S without buying the type S tans with LSD?
We are talking around 1500 dollars difference or so, should I buy the normal H22a and try to milk out the 20hp?

Where is the best place to order a JDM engine? Obviously ebay and google search but is their some sort of hidden gem?

Thanks in advance....

 

firstly the type s is NOT an lsd tranny, it is an ATTS transmisson from factory.

since your car is a basemodel you will need an atts computer and blah blah blah

my .02 is pick up an obd1 jdm h22a complete motor and tranny combo and directly drop that in.

or you could buy the type s motor and buy an lsd h22 tranny but that might get a little $$ for ya how ever the lsd tranny will be a direct fit (no extra computer b/s)

essentially your cheapest bet is to buy the obd1 jdm complete and drop it in. you will need to convert the motor to obd 2 to use it in your car which is fairly simple (you essentially use everything off your obd2 motor)

 

you could just get the type s motor and use your existing tranny which will work as well with no wiring/ecu changes at all.

 

Type S = ATTS 220HP.

SiR S Spec = LSD 220HP. If you have a base this is the one you want.

And secondly IMO LSD is not worth the $$$ because the tranny has the same gearing as what you have. In all but racing situations, you wont tell a difference.

 

Ok, that's your opinion.

WTF are you talking about? Base transmissions will NOT bolt onto ATTS blocks.

No, the cheapest route would be to pick up another H22A4 (base) and DROP that in, with no changes to sensors or distributor or ECU or harness or transmission or axles. ****ing Duh.

Just stop. Seriously. I don't know where you get your information but it's wrong.

 

Yea I am new to prelude but not to Hondas....why would I get and OBD1 h22???

I have answered most of my questions, the main question I have now is will the H22a JDM motor need to have a modified harness because its RHD?

 

Just use your existing harness.

 

So the stock harness will work, cool.

So with the OBDII H22a, can I use the stock base ECU? (some sort of speed limiter in the JDM ECU??)

What about the dizzy and intake manifold

I know that the oil pump has to be swapped.

I am just super sketched that I will have this engine and the thing wont get out of limp mode etc etc.

I will paypal someone a few bucks if they can give me a 100% definitive guide or DIY.

 

base tranny DOES bolt up to atts blocks... its vise versa that doesnt work, i.e atts tranny on base block. (when i say doesnt work i mean it requires fab work and isnt a direct)

around here (toronto canada) jdm 'a4 h22's are around 2200$ or 1300ish engine alone.
i didnt mean exact cheapest i meat it was one of the cheaper ways. i apologize for the wrong choice of words. obd2 h22's are more expensive at jdm shops. thats why i use obd1 engines.

when i expressed my opinion i clearly stated it was my opinion "my .02"
anyway you seem to take things a little too personally, so i think ill steer my path clear of ya.

 

You're still spouting nonsense because you're still wrong. No such thing as a "JDM A4 H22".

And no, you simply cannot mix and match ATTS transmisions or blocks with base transmissions or blocks. Neither configuration is a bolt on. The base transmission would require an adapter plate to attach to an ATTS block. The ATTS transmission simply cannot attach to a base block. If you say anything else to the contrary, you don't know what you're talking about. The only thing you got right was that the Type-S doesn't have LSD. So stop.


OP, ignore anything Booger says. If you want to purchase an H22A, the best place if HMotorsOnline.com. If you want to know about swapping one into your 5G, just use the Search button. In fact, I think there are like 4 threads on the subject in the FAQ alone. Speaking of the FAQ, Booger should read it too.

However, there is little to no point in swapping your H22A4 for a base H22A. You will only gain a slight increase in compression and torque. In my opinion that makes it not worth the effort, compared to getting a replacement H22A4.

 

He could just buy a OBD2 JDM H22a, I don't know why that is never suggested, just reuse your old dizzy, wiring harness and fuel rail.

 

My last sentence addressed that.

 

OP, just get a obd1 JDM H22 from hmotorsonline. That will be most cost effective, and you'll forgo the bore distortion and oil ring wear inherent in 97+ H22's.

To convert the obd1 jdm engine to obd2, use:

- OBDII Dist
- OBDII Oil pump and CKP sensor
- crank Balancer belt gear and Timing belt gear
- injectors and fuel pressure regulator
-use your usdm engine harness

 

Thanks everyone for clearing this stuff up...

If I wanted to just get a base H22a4 is there a good source to scoop one online? I dont feel like pulling one and ebay is barren.

If not I think ill just get an h22a.

Again thanks...

 

Check the FS section of the 3 major Prelude forums. If you come up empty, you can get a JDM H22A from www.hmotorsonline.com