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H22A4 What Do I need?

 
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Old 02-01-2017, 02:06 PM
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H22A4 What Do I need?

In my area on Craigslist there is an H22A4 engine for sale. I know the H22 swap is fairly popular, and I'd love to not have to go through my second B21A1 destroying itself. Included is a link to the craigslist ad, What would I need to make this swap work? And could I use the 5 speed transmission I already have or? I'm not great with foreign cars, but I love my '91 Si 4WS. I'm not in a hurry to get a swap done, but if I can start getting things together now, when the B21A1 starts using too much oil I'll be ready.

Craigslist ad for H22A4: https://knoxville.craigslist.org/pts/5931294227.html
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Old 02-01-2017, 06:09 PM
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Re: H22A4 What Do I need?

That looks like from the pics that it is just a bare block + head. You'll at least need the accessories (alternator, PS pump, etc.), intake and exhaust manifolds, gearbox and the ECU so it'd be worth checking if any of these are included.

The next part is swapping it into a 3G, been done before plenty so you should be able to find some good write-ups about, but you'll at least need new engine mounts and axles. Depending on what is in your 3G there might be a fair bit of work to be done to the wiring harness to get it all to work, there used to be a conversion harness you could buy but I'm not sure if it is still available. You'll probably need a shifter assembly out of a Prelude or Accord too since these use cables not linkages. There are a bunch of other little jobs too that would need some thought, it certainly isn't a drop and go swap but is doable. I'm pretty sure there isn't anything you'd be able to re-use off the B21.

PM 1funryd on here, he loves 3rd gen H22 swaps. Here is a write up he did for a bit of reference The Official H22 Swap thread by 1FunRyd
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4ws, b21a1, h22 advise, h22 swap


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