EF's and Integra's are my cup of tea, I'm not too sure about accords. My question is:

I've got a 91 LX 5spd that has a burnt valve and tranny has bad synchros, I found a guy with a 92 EX 5spd that's wrecked with low miles, now with the motors being OBD-0 and OBD-1 respectively and one being an LX and the other an EX, what hurdles am I gonna run into if I try and swap the motors? Thanks in advance for the help guys.

 

not too sure but u can swap it. u can can swap as long as the car are 4th generation accord(90-93)

 

Yes they will swap with no problems. The only difference between the lx and ex is IM and EM and ECU, everything else is the same, engine is f22a1 (91 lx) and I believe the f22a4 (92 ex) Shouldn't run into any problems.

 

f22a6

 

they are both the same obd also, an early release of OBD-1. same grey plug distributors as the 94-95 F22Aa, except the 90-91 is internal coil. It will be a very easy swap.

just use the 91 dist and the cast LX(F22A1) exh. manifold, because the O2 sensor on the EX is located behind the motor on the downpipe, and you'd have to lengthen the wire.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nuc79 &raquo;</TD></TR><TR><TD CLASS="quote">they are both the same obd also, an early release of OBD-1. same grey plug distributors as the 94-95 F22Aa, except the 90-91 is internal coil. It will be a very easy swap.

just use the 91 dist and the cast LX(F22A1) exh. manifold, because the O2 sensor on the EX is located behind the motor on the downpipe, and you'd have to lengthen the wire.</TD></TR></TABLE>

So should I stick with the 91 lx ecu or can I use the 92 ex ecu (both are for MT)? And so If i retain the 91lx dizzy and ex. mani. all the wiring harness will bolt right up in the same exact location?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CrxSi707 &raquo;</TD></TR><TR><TD CLASS="quote">

So should I stick with the 91 lx ecu or can I use the 92 ex ecu (both are for MT)? And so If i retain the 91lx dizzy and ex. mani. all the wiring harness will bolt right up in the same exact location?</TD></TR></TABLE>

You can use either ecu, but i'd just leave the 91 in place because it's less work and saves you from buying the EX one. And to clarify, the '92 engine harness will work with the '92 distributor if you want to go that route, but they must be used together due to the external coil configuration....or you can do some custom wiring...

But yes, if you use the 91 engine harness, dist, and exhaust manifold everything will bolt up and plug in in the exact same location. . If you want, I'll even buy your leftover 92 distributor.

 

Ok update. the donor car ended up being a 92 accord LX rather than an EX. I've got the donor car all unhooked except motor mounts and fuel lines. Looks as though all plugs match up except for two cases.

1)on the 91 LX there are three or four nipples on the top of the t/b that has 2 0r 3 hoses running to the black box against the fire wall, and one hose running to the bottom of intake box. the 92 LX has all the same hoses running to the black box but the last nipple that would contain the hose going to the intake box is just covered by a nipple. (I figure no big deal I'll just make sure the nipple/hose is utilized on good car.)

2) all of the main engine wire/harness looks as though they are plug and play with the exception of one. On the pass. side there are three main plugs, two of them are circular. One is rectangular. The two grey circular ones look as though they'll match up but the third one is totally different on the two cars.

My ultimate goal is to utilize the external coil dizzy setup. I was hoping that the engine harness from the 92 would completely plug n play with the 91 chasis harness almost but not cigar. What would be my next/easiest course of action? Also, is there anybody else that can shed any light on any other problems/differences I just haven't come across yet. Thanks in advance.

 

Come on somebody has got to have some info...help me out guys.

 

Just transfer the 91's engine harness onto the 92 LX engine to keep it simple.
It won't take that long to do it.
Stay with the internal coil dizzy. Also, the car will remain 100% stock this way. Trust me, that's a good thing if you ever try to sell it.

 

everything is bolt on. u don't need to rewire anything. just swap the trannys and that is it. the only prob that u might have is the sensors(dont' quote me on that)
i did a swap on my automatic tranny(90 accord ex) with the tranny of a 92 accord lx and the only thing i changes is 1 sensor because the plugs wheren't the same. everything else was ok so u good to go.

 

**** i thought u were talking about trannys. the distributor is the only different thing between 90-91 accord and 92-93 accords. but when u do the swap just use ur old distributor since the car chansi is not for the 92 93 distributor.

 

[QUOTE=nuc79]Just transfer the 91's engine harness onto the 92 LX engine to keep it simple.
It won't take that long to do it.
Stay with the internal coil dizzy. QUOTE]

Is the wire harness transfer process going to be just a plug for plug, plug and play process without the need to switch or swap any kind of sensors? (I haven't forgotten about the switching ex. mani's because of o2 locations but is there anything other issue I might run into when swapping the harnesses?) Thanks for the help, and once I have it completed and if your still interested in the 92 dizzy and coil I'll let you know and sell it to you for cheap.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CrxSi707 &raquo;</TD></TR><TR><TD CLASS="quote">
Is the wire harness transfer process going to be just a plug for plug, plug and play process without the need to switch or swap any kind of sensors? (I haven't forgotten about the switching ex. mani's because of o2 locations but is there anything other issue I might run into when swapping the harnesses?)...</TD></TR></TABLE>

Yeah, it's a direct plug for plug swap. I did the same thing replacing the engine in a friend's 91accord EX. He got a F22A1 w/out a harness from a 94 prelude S. We used the 91 accord engine harness. Took about 10 minutes to change it over onto the new engine.