Sivion

iTrader: (2)

I was searching (through hundreds of posts, Ugh) to find something that I couldn't quite find.

I was wondering why the K20 from the RSX is so expensive? Is it because they are so rare right now? Or is it because of the engine itself?

I was thinking that if someone wanted to, they could take the K20 from the SI Hatch and swap it into the 7th gen coupe and turn it into the new si coupe that they really should have made instead of the si hatch in the first place.

But would it necessarily be cheaper to get a K20 from and SI rather than one from the RSX? Just curious, cuz I think that would be sweet to take the SI engine and swap it in and slap a good ol' SI emblem on the coupe.

-Cheaper meaning would the swap be cheaper to perform (parts/labor)-

krayziebonet4l

iTrader: (2)

the k20(a2) from a rsx type-s is 200hp while the k20(a3) from the si and base rsx is 160hp. so... more hp=more money

MadWheel

iTrader: (11)

the rsx k20a3 however gets more tourque due the final gear ratio, in comparison with the Si.

Jodster

iTrader: (8)

The RSX type S has the K20A2 in it. With that motor you also get a 6-speed tranny, true DOHC VTEC and a redline of 8000 RPMs.

The 02-up Civic SI and base RSX have the K20A3 in them. That motor comes with a 5-speed(or auto in the base RSX) and a redline of 6800 RPMs. Plus the K20A3 only have VTEC on the intake cam, so you do not get true VTEC with that DOHC motor. Last thing, the K20A3 in the base RSX come with a plastic intake manifold. Were the K20A3 in the 02-up SIs intake manifold is not plastic.

I hope this helps.

Sivion

iTrader: (2)

Please forgive my ignorance if I do not know what I am saying here...But can the K20A3 be used in conjunction with the tranny in the 01 and up civics? Since it's 5 speed? Or would that not be possible?

So I take it from what I read here that the K20A3 will be a cheaper swap than the K20A2?

Thanks for the great info everyone.

Jodster

iTrader: (8)

You would not be able to use the D17 tranny with the K20 motor. And it would not really be worth it to swap in the K20A3 motor. Because the cost to install it would be the same for the K20A2 and with the K20A3 you would be getting only 33hp more. Not worth it.

MatrixShark

^^ Exactly ^^ All of the "difficult" things need to be done when swapping either K20. Therefore, job complexity and labor costs will be roughly the same. Spend the extra grand (roughly) and do it right.

andyman97

iTrader: (14)

If I were to do the swap now that the k24 is out, that would be the one I'd do. k24 block with k20a head from a type r, boost that and compare it to a k20a2, muahaha.

ImportRacer2123

iTrader: (13)

K24? and that would be?

Unleaded

iTrader: (4)

a k24 block from an accord or crv with a true vtec k20 head? sounds like you're describing a tsx/ european accord motor. maybe not correct, but i have always figured the tsx motor as being a frankenstien k series.

andyman97

iTrader: (14)

TSX block

Jodster

iTrader: (8)

The K24 block is found in the new Accords and CRVs. And both of them have Vtec on the intake cam only. The head on the Accord and CRV K24 motor is the same head that is on the K20A3, but the difference is that the cams are smaller in the K24. The K24 motor in the TSX is basically the frankenstein K-series motor. It is the K24 block(of course) with a different compression, The K20A2 head on it, Vtec on both intake and exhaust cams, and a 6 speed tranny. Its redline is like 7200 I believe. The TSX K24 motor has 200hp and 166 ft tq. This motor would have tons of torque with a supercharger on it. But the only problem with swaping this motor in is that the block is taller.

slammed2k2

iTrader: (1)

I drove both the brand new rsx s, and a tsx at the dealership and in the rsx u can acvtually feel when vtec comes in, coz it starts pulling u nice and hard much like the older generation b series motors, (like gs-r, type r ) but the tsx doesnt pull like that, only the rsx s does

SlammedBlueEM2

iTrader: (2)

That's because both engines depend on high end power a little differently. For example:

The K20A2 would be your high-revving torqueless wonder, yet the wide powerband makes it fun to drive with the lively VTEC to compensate for what the other engine has.

The K24 block has something the K20s don't have - more displacement, and more displacement means more torque. You can either have torque, or less torque and VTEC n/a.

It shouldn't be surprising if the RSX feels livelier given both engines are 200HP with the K24 having just a lil' bit more torque. The RSX is around 400-500lbs lighter than the TSX and it's additional torque can't make up for it's weight in stock form.

However if the K24 was in a lighter chassis, that would be a different story.

SlammedBlueEM2

iTrader: (2)

I thought it was just the intake manifold? (In comparison to the other K blocks.)

Jodster

iTrader: (8)

A guy on ephatch.com swapped a complete K24 motor from a CRV into his EP3. He said that the block was a little taller that the K20A3, but it wasn't a problem. I do not know though if it would be a problem in the EM2.

MatrixShark

This seems to come up alot. The Hasport civic sedan has this block. It's in the "Car and Driver" (I think) that reads "fourgasm" on the cover with a yellow s2000.

Jodster

iTrader: (8)

Since when did the Hasport civic sedan have a K24 block under the hood? I thought that they still had te K20A2, but boosted by cybernationmotorsports.

ViNRoCk8

iTrader: (2)

I agree, I believe it to be a straight Type S swap myself

greatcasa

iTrader: (2)

The hasport Civic has the Type S under its hood. However it may soon have a K24, because Hasport is suppose to have the mounts for the swap by the end of the summer. Clearance must not be an issue with the swap, if they are making the mounts for the swap. It still could require a new hood though if clearance is a problem. I'm just wondering who on the site will be the first to do the K24 swap. I've heard that engine is like boat loads heavier than the Type S which is already heavier than the regular D17. I wonder how the car would handle the heaier load as far as ride.

ViNRoCk8

iTrader: (2)

Well personally I wouldl think that swapping a Si motor wouldn't be a bad idea if you could get it at a fairly low price. Like lets say 2,000 to 2,500, which I think could be possible since the market is mainly for the K20a and the A2. I mean for some people you might only look at is as only a 33 horsepower upgrade, but its more than that.

You are getting an engine that is more supported by the aftermarket, you are getting a more tunable engine (one that companies actually do have a supercharger for). All in all its just a much better platform to start with instead of the D17. You can ask any person who traded in their EM for an EP. Why did they do it? You know it wasn't looks. They wanted the potential. The K-series offers that.

I mean hell people swap the K20A2, why didn't they just swap the K20A. I guess its just a money issue.

Which is the main reason I am a fan of the A3 swap.

But hey if the K24 swap is just as cost effective that might become popular too.

MatrixShark

YES, it is still a type-s (2.0) block in the Hasport car.



Ripped from Car and Driver:
"An RSX Type-S 2.0-liter four-cylinder booted the stock 1.7-liter motor and came replete with an AEM engine-management system, a custom intake, and a Rev Hard turbo system good for about 6.5 psi of boost. AEM claims an output of 349 horsepower and 239 pound-feet of torque delivered to the front Yokos via an RSX Type-S six-speed manual, a Japanese-market limited-slip differential, and a Clutch Masters clutch and aluminum flywheel."

6_funk

assuming that they've been used anywhere from 0 - 40 000miles, including parts, labor, tranny, ecu, everything...


how much would these all of theses swaps (k20a, k20a2, k20a3) cost?

briang

I'll slap a K24 in early next month to make sure the mount kit fits properly. But we are going to leave the K20 in for the next year most likely. We plan on upping the boost into the high twenties or low thirties for some drag racing.

brian g