i need to know what the best engine for my 91' crx is. i dont know a whole lot about cars so i really need help. i know there are the b16's, b18's, b20's, h22's, and other engines. i just need to know what the best engine would be.

There is no best engine, every engine has it's weakness' and strengths. Basically every engine has potential so it's impossible for anyone to tell you what is the best. Since you don't know a whole lot about cars, you need to do a lot of research. I've seen too many people buy the wrong engine, only to swap in another engine after they did research.
Price up engines, look up all the parts that are needed for each individual swap, figure out your power goals (immediate and future), and set a realistic budget. That will help you decide a hell of a lot better than just going by what someone else recommends.
Edit - I say this because I was all set on saving for an h22a swap and building it NA for my '94, but after researching more I decided that turboing a D-series engine was the way to go (for me; the $ I was willing to pay and my power goals).

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hmm....thanks. would you suggest anything in particular or help me narrow down my options? if you could help i wuld be very appreciative.

Let us know your rough budget and some power goals and we'll be able to help narrow it down a little.

From the engines you've listed... The h22a will definently be the hardest to put in and get running, it will also be the most expensive of those swaps (to just do the swap). The B20 is a decent swap and can run with the b16a swapped civics/crxs. Though with it's low compression, it'd be beneficial to build it up (whether you're going all motor or forced induction). For the B18b (integra LS, RS, and GS engine), it's just a lower displacement version of the b20 (b18b being 1.8L and the b20 being a 2L; but they share the same head). Then the b16a and b18c, it all depends on the "out of the box" (straight swap with no mods) power you want. Then there is the K-series, in my opinion a highly over rated engine for the price. In a few years when the prices drop, it will be fine, but right now you could build another engine and turbo it for cheaper while still making more power. Of course that could be said about almost any engine.

i say look at the B16a or the B18C1......IMO

do a search.

yeah. i was looking at the b16a but i did a little research and found the b18's and was wondering if they were better. i also thought about the weight and i figured the h22, though a powerful engine for my car, would be to heavy and thought the b16 would be better for weight, and it is powerful enough for me. so when i found the b18, i thought id ask. as for money, i dont have any right now. i need to start saving. but it wont take to long. could someone tell me about how much money it would take to buy an integra with a b16. like the ones you listed earlier. and if i have to swap out the transmission or not. cause i have a d series engine and transmission.

An OBD 0 B16A would be the easiest swap. probally the cheapest too.

Well here in the states, b16a's don't come in integras. And yes you will need a new transmission as well as an ECU.

k20 d00d

k20's are ridiculously overpriced right now.....for the ~$9000 that you're going to spend on the k20 swap, you'd be better off building a B series for boost....

k20's are ridiculously overpriced right now.....for the ~$9000 that you're going to spend on the k20 swap, you'd be better off building a B series for boost....

the difference is that that isnt as reliable as a completely stock motor. You're gonna be running low 13 sec 1/4 mile. It will basically pay itself off because you would have to maintain a high horsepower car alot more than a stock motor.

hmotorsonline has the complete changeover for 4000 dollars. You wont spend 9k. You might get close to 9k if you got the K20A (type R) which is 5600.

well what do they come in? the b16a i mean.

The earlier model b16a's came in Integras, CRX's and Civics; but in Japan and Europe, not the US. The only US models that had a b16a were the Del Sol vtec's and the '99-'00 Civic Si.

the difference is that that isnt as reliable as a completely stock motor. You're gonna be running low 13 sec 1/4 mile. It will basically pay itself off because you would have to maintain a high horsepower car alot more than a stock motor.

hmotorsonline has the complete changeover for 4000 dollars. You wont spend 9k. You might get close to 9k if you got the K20A (type R) which is 5600.

Right there you're at 9600....i personally would boost a bseries...there are plenty of boosted GSRs on Honda-tech that last a long time. i wouldnt discount them as unreliable.....reliability all depends on what you put into it....

Hes not telling you to add the $4000 and the $5600 hes saying thats the difference in the K20a Type R

i think it was superbluecivicsi who had a good write up and he estimated the cost to be about 9k

i was wrong it was Brody P

Hello and welcome to AF. If you are interested in an engine swap for a 01+ the best route would be a k20 swap. Below are the materials needed with prices. This is a lengthy process. The prices below are straight fromt he dealer you can also get some of these parts at a junk yard.

k20 intermediate shaft.................$220
Axles from 02+ si.........................$100 from junkyard
RSX Subframe............................$600(quoted from Acura) $150 from junkyard
Hasport Mounts............................................ .$400
Shifter Assembly.......................................... ...$100
Shifter Cables............................................ ....$300
02+ si radiator.......................................... ...$150 (TYC brand)
fans.............................................. .................$30 universal fan from autozone
02+ si upper radiator hose..................................$13
02+ si lower radiator hose...................................$11
RSX Throttle cable............................................. $40
RSX Fuel Line.............................................. ......$45
RSX Brake booster line........................................$45
RSX Purge Line.............................................. .....$40
02+ si ac line from compressor to condensor............$100
RSX Clutch Line From slave to master.....................$20 from junkyard
RSX high pressure power steering hose...................$240
RSX Power steering return line...............................$50
92-95 Civic Power steering resevoir with bracket.......$50

Optional Stuff:
Hondata........................................... ................about $900
Hasport/Hybrid Racing Engine Harness....................about $300**
(complete new harness)

So the grand total not including the motor on just the parts needed list for the swap comes out to roughly around $3800.

Just remember that this does not include the motor... i have seen complete motors that go for as low as $2000 for the SI to as much as $5000 or more for the JDM type R...

So now when you add everything that brings it up to roughly
$5900 or possibly lower to as much as $8900 or more.

An OBD 0 B16A would be the easiest swap. probally the cheapest too.

you dont know anything. you are low on cash. you want a b series swap. that qoute above will make your life easier.

before you even think about all these motors, you need to be concerned with the dpfi to mpfi conversion.