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b18 head on a b20

 
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Old 10-09-2007, 12:00 AM
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b18 head on a b20

ok i got a 89 2.0s carb. and i hate that it is carbed so i heard that i can put the b18 vtec head on the b20 block and make good compression so i was wonder what it would take how long and how mush? thanks
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Old 10-09-2007, 12:11 AM
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It would cost more than you probably think it will, and it'll kill you installing it.
Also it would take quite along time.
It'll cost more than an h22 swap and make less power, or have less power making capabilities. I looked into it with a b16 head. Same idea different head.
If you wanna put the money into it, it;d still kick ass, and be one of the only
b20vtecs in the world. So yes it's possible,but a pain and very pricey.
Good luck in what you decide to do.
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Old 10-09-2007, 09:44 AM
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There are some write-ups floating around on this with the B16 head. The B18 head would work too. The writeups dicussed a pretty good amount of work involving modification of the head. I've talked to Mitch, one of the most knowledgable 'Luders I know, and he said that it really isn't as hard as people make it out to be. It is rumored that you can make a very good power gain with this.

You have to remember though, B16s and B18s make their power way up top. A chunk of that power made is past our B20's redline. If you've done any reading you know that our motors will chuck rods if revved to high. When I get home this evening I'll try finding that writeup.
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Old 10-09-2007, 06:19 PM
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If you have a B20B (CRV engine) then it'll work well, and be a cheaper alternative to a H22 or turbo swap. However I doubt you do, so it's a big headache.

While I'm not sure, a friend was going to shoehorn in a B20B into his third gen, but abandoned the project because it was going to be too hard. Get yourself an injected B20 and boost it.
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Old 10-09-2007, 08:47 PM
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Quote:
Originally Posted by Brash22 View Post
If you have a B20B (CRV engine) then it'll work well, and be a cheaper alternative to a H22 or turbo swap. However I doubt you do, so it's a big headache.

While I'm not sure, a friend was going to shoehorn in a B20B into his third gen, but abandoned the project because it was going to be too hard. Get yourself an injected B20 and boost it.
The 3g Prelude B20s absolutely love boost.

I believe there was someone in Austrailia that actually has a B20B fully installed and running in his 3g. Should be pics floating around somewhere. I would post them but they were on my old computer that crashed.

I'll get that write-up on the head conversion for ya tonight, OP.
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Old 10-10-2007, 06:17 PM
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well i really want to do it cause its different and it would be tight if it works good yeah and i know about the reving but idk my car can handle high revs it seems i have got it past what the tach reads many of times and it seems fine and plus i want to make my car hella fast cause i want to make my car into a road track racer
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Old 10-10-2007, 06:28 PM
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Read this first, then see if you want to vtec your b20A3...which would be a lot more work factoring in that you have to convert your Carb system to PGMFI, including getting a new fuel tank etc etc.

http://web.archive.org/web/200302242...articles/vtec/
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Old 10-10-2007, 08:41 PM
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yeah i was going to get a whole new fuel fi b20 engine then do everything to that engine
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Old 10-10-2007, 08:57 PM
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looks very tricky. good luck with that!
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Old 10-10-2007, 09:11 PM
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yeah thanks i got some friends that know hella about hondas so they will prolly help me out
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