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K20 or b18c1

K20 swap to 1990 da integra

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8.3K views 9 replies 4 participants last post by  LotusElise  
#1 ·
I'm looking at buying a 2006 rsx runs and drives then I wanna swap that into my 90 da integra.... how hard is this process am I better off doing a b swap or worth the trouble? The rsx is a complete car so ill be able to steal motor trans ecu engine bay harness and all the goods I can from that. I know I'll need the k series mounts axles and possibly a chassis jumper harness is it worth the efforts or just do a b18c1?
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#5 ·
if your looking at getting started with time attack or track events a motor swap would be last on my list, unless there was a problem with it. Suspension, tires, and seat time will make you faster than more hp will. I have run lower lap times in my 150hp powered cars than cars with far more hp.
 
#8 ·
With that said B series engines and transmissions have been getting more and more expensive. A B series will be easier in your car, if you plan on doing it all yourself, but finding B series that won’t need to be rebuilt can be a challenge as well. A K series can be as easy but you will need to spend more money on premade harnesses and parts to make it more plug and play.
 
#10 ·
Welcome to K20a.org @Slammedndbroke.

I have some liking for the B-series engine, especially for the B16B. That idea of Honda having a high rod-stroke-ratio in favor of a 116 hp/Liter high engine speed engine amazes me. I see quite a few GM and VW 1.6 Liter approaches in the hill climb racing scene, running Kawasaki, Suzuki or BMW RR heads to approach 230-240 hp. With the VTEC system and the right head 260 hp should be possible. The B18C still is a upgrade, but has less of that high engine speed flair and suffer the same issue like the K24, the ports are not adequate for the displacement. Anyway, getting into 150 hp/Liter with a B18 is challenging.

That said, the K20 has both and more of both of them, it has the revving capacity of B16B (redline 8400 rpm/fuel cut 9000 rpm), the torque capacity of any of the B-series NA versions, the weight of a B-series and amazing tuning options with an well supporting aftermarket. I've tuned stock longblock's with bolts on to 250 flwhp and 175 flwftlb. Still a OE operational range (< 8500 rpm), still OE quality parts on the longblock and IM, still more powerful then any stock I4 2-Liter NA longblock out there.

For me the K-series, especially the K20, has everything what a good NA needs. Worth every penny. So now I would be interested what is on your list regarding the character for the drive around and time attack @Slammedndbroke?