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Engine Swap 1984

 
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Old 09-12-2013, 01:59 AM
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Engine Swap 1984

Hi everyone I'm new to all this stuff...... So here's my story I have a 1984 Honda Prelude automatic. The engine is in good condition but the tranny is not so I was just going to replace the engine and tranny all at once. My question is what kind of engine and tranny can I put into this car? Besides another 1984 Honda Prelude engine because I want fuel injection and maybe Vtec if possible.....
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Old 09-12-2013, 12:54 PM
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Re: Engine Swap 1984

That depends on how much money you want to spend and custom work you want to do. The drop-in engine for an '84 is the one that's in there now -- an ET2 (aka A18A). First step up the scale is a BT (A20A) fuel-injected 2-liter from the 2d gen Prelude Si -- not quite drop-in, because you have to adapt the fuel system and the wiring harness for the fuel injection, and I think the hood on the Si was different to clear something...don't remember offhand.

Further up the scale of difficulty, people have installed D16s from Civics and B20s from Integras -- they fit in the engine bay. You'll have to check around to see if anyone makes engine mounts to fit (I already checked Hasport...no luck).

Up on the far end of the scale, I do know of one guy swapping an H22 into a 2d gen he set up as a drag racer...lots of custom engineering, and it went in with a shoehorn. Not sure I'd recommend that for the street.
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Old 09-12-2013, 09:55 PM
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Re: Engine Swap 1984

Believe it or not, B18 swap is possible for a 2nd generation prelude.



You need to research and decide if it's worth it.
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Old 09-12-2013, 11:22 PM
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Re: Engine Swap 1984

@Jamie thanks for all that information!

@Sideswipe SI Thanks for that video i might go that route seems fast! The one thing that im not to sure on is if the hood would clear..... Because that prelude might be the si version which had a bigger hood but i will look into that.
Again thanks a lot guys!
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Old 09-13-2013, 01:34 PM
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Re: Engine Swap 1984

If say **** it and throw an h22 in there lol

I eventually want to get a 1st gen and h22 swap it as a toy/meet car.
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Old 09-13-2013, 04:55 PM
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Re: Engine Swap 1984

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Originally Posted by LazyJonathan View Post
@Sideswipe SI Thanks for that video i might go that route seems fast! The one thing that im not to sure on is if the hood would clear..... Because that prelude might be the si version which had a bigger hood but i will look into that.
Again thanks a lot guys!
It should -- I've seen B-series engines from Integras plopped into base 2d gen cars. The trick is finding the motor mounts, and adapting the fuel system to work with electronic fuel injection.
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Old 09-13-2013, 05:46 PM
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Re: Engine Swap 1984

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Originally Posted by Sideswipe SI View Post
Believe it or not, B18 swap is possible for a 2nd generation prelude.



You need to research and decide if it's worth it.

Gnarly dude (spicoli voice)
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Old 09-14-2013, 03:53 PM
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Re: Engine Swap 1984

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Originally Posted by Jamie View Post
It should -- I've seen B-series engines from Integras plopped into base 2d gen cars. The trick is finding the motor mounts, and adapting the fuel system to work with electronic fuel injection.
So would a 1st gen integra engine fit in a 2nd gen prelude?
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Old 09-14-2013, 10:50 PM
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Re: Engine Swap 1984

With the caveats about engine mounts and EFI, yes. Whether you want to go to the effort is another thought. We had an '87 Integra at the same time I had my '84 Prelude; there wasn't that much difference in performance.
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Old 09-20-2013, 09:07 PM
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Re: Engine Swap 1984

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Originally Posted by Jamie View Post
With the caveats about engine mounts and EFI, yes. Whether you want to go to the effort is another thought. We had an '87 Integra at the same time I had my '84 Prelude; there wasn't that much difference in performance.
Well what I might do is just run this car down to the ground and look into a 5th gen prelude......
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Old 09-20-2013, 09:20 PM
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Re: Engine Swap 1984

What's up guys, kinda same question, 01 5 speed and looking for a good company to buy a Jdm swap. What's company do you recommend buying from. Anyone with any PERSONAL experience would help tons!! Thanks in advance.
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Old 10-27-2013, 02:55 PM
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Re: Engine Swap 1984

I have an '84 myself that I killed because I forgot to change a freakin hose! I know, "What a dumb mass!" I was thinking of a swap, but then I found a company on eBay that offers long blocks with a 3 year warranty for about $850. They also offer .020" versions. I've never built a Honda and everything I ever knew about cars started from American rods. Does anyone know if they offer stroker kits for older Hondas? I like my dual carb system and at the time of it's death, the system still worked perfectly. I was thinking of getting the bored out block and adding a stroker kit to it for more power. Or, if it's possible, build an all mechanical V-Tec so I can keep the carb set up. I don't know squat about Hondas, for the most part, and the people I know that have built their cars with reliability have all worked on Civics and such. No one I know has any experience with the older Preludes. Does anyone know if my idea would work out or not? I haven't found a kit yet, but my searches always suck for some reason.
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Old 10-27-2013, 07:51 PM
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Re: Engine Swap 1984

Unfortunately, the A-series engines never had much aftermarket support, and the few companies that developed anything are either out of business or moved on. Pre-injection Civics and CRXs still have some support simply because they've been so popular in road racing.

A completely mechanical variable cam system...love the idea, but how would you re-map the fuel delivery to the new cam profile? That's the beauty of EFI -- so long as the injectors can handle the flow, you can vary delivery almost infinitely. With carbs, you can't have variable jets, nor variable venturis...at least, not practically.
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