Rep Power: 222

So I think I've about had it with the B series platform for a while and have found myself looking to move on to bigger and better things namely the K series platforms. I'm between an RSX type s and the EP3. I've done some reading around forums and wikipedia about the differences between the different k20 platforms but I haven't found some answers to my specific questions so I thought I'd try here and see what happens.

I really want the EP3, but the engine sucks. 160 hp 7200 rpm. weak sauce kimosabe. The K20z is where it's at and maybe what head/cam combos work and wanted to see if anyone around the forum has messed around with the A3 and what has worked for different folks. Trying to stick to as much OEM as possible and DO NOT want to open the block. What I am aiming for is leaving the a3 bottom since, from my understanding, its pretty resilient. Instead I want to see if using another head and Skunk2 IM will allow me to rev safely to 8k and make power up there.

I'm pretty new to the K series.

Any help would be great, links to other forums etc.

thanks guys

 
Rep Power: 0

for the most part, im pretty sure all the k20 blocks are the same. you can definately swap heads to the a2 or z1 or w/e you want. from what i hear, the rbc intake mani is pretty baller too.

 
Rep Power: 222

i've heard that too but I've also heard of complications with the RBC manifold and the z3 head on an a3 block because of the tb. Maybe the ITR manifold would be better?

What I would like to do is take the **** 7200 rpm red line and 160 hp and move it closer to the type s 210hp @8000 mark

 
Rep Power: 222

i've heard that too but I've also heard of complications with the RBC manifold and the z3 head on an a3 block because of the tb. Maybe the ITR manifold would be better?

What I would like to do is take the **** 7200 rpm red line and 160 hp and move it closer to the type s 210hp @8000 mark

 
Rep Power: 320

just buy the rsx type S unless your getting the ep3 for dirt cheap. You get a lot better starting platform. Basically a GSR vs LS motors. The k20a3 head is crap, its not even true i-vtec. Its vtec-e. If you want to buy a k20a2 or k20z3 head they still carry a pretty huge premium around $800-1000 on k20a.org

http://www.jdmuniverse.com/forums/ho...20a3-head.html

You can probably find more info in k20a.org.

 
Rep Power: 320

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Rep Power: 222

I wanted the EP3 because of the hatchback. It is a lot more practical for my uses, the cargo room of a hatchback for example. I assumed the heads were interchangable and I don't mind spending 800-1000 for a good head. I wasn't sure how interchangable the components were if they were switchable like the b series parts.

My plan would be to take the 06+ si tranny with LSD mated to the k20a3 block and a k20a2 (type s right?) head.

I am slowly getting more information and finding out the a3 doesn't have oil squirters? that blows.

its looking more and more like doing an a2 head on an a3 block isn't looking that feasible. I'm still waiting to hear from someone who has a swap like this

 
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well the rsx is a hatchback. the si is basically a 3 door (wagon maybe). however, you can definately swap the a2 head on to the a3 no problems. i see alot of people with the rbc im so i don't think theres too many problems with it.

 
Rep Power: 320

Then yes there all pretty much interchangeable down to the pistons, rods, cams..etc, basically like a B-series.

They just respond a lot better to bolt ons then the B series did when you have the kpro with it.

 
Rep Power: 222

gotcha. im prolly looking at a complete swap to be honest. the a3 crank blows, the a3 compression blows, the a3 head moderately blows, the a3 trans blows 1 gear too short. z1 swap is most likely in my price range.

 
Rep Power: 222

yeah thats what i was meaning to say. the wagonish design is practical for me.

 
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you should totally get an em2 and do a k20 swap. the em2 has a really big trunk for such a small car. the em2 is probably the best chassis for handling too.

 
Rep Power: 320

maybe just turbo the ep3..they respond to turbo well like most DOHC hondas. Then again you can gets TSX motor for $1800 now.