DC5-R is k20a 220ps
EP3-R is k20a1 215ps


I thought that the motors were both k20a’s until a post here stated that civic-r is a k20a1. What are the deference’s in the motors then? Just ecu ?

If you know or have an idea let me know.

Thanks,

JMI

 

They are both k20a2's.

 

The Civic Type R motor is the same as the Rsx-S both are k20a2, rated at 200 hp. The Dc5-R is rated at 220 and is just a k20a.

 

the itr dc5 motor is actually rated at 217

 

OK you are all mistaken so far...

Civic-r JDM is 215PS not HP A post here called it a k20a1
Civic-r (euro) is k20a2
DC5-R (JDM) is k20a 220PS (217hp)

So what is different about the k20a vs k20a1 ?

Thanks,

JMI

 

Someone must know something !

JMI

 

This is all I could find on the K20A1.

Engine

Employs a high revving, high-output 2.0-liter DOHC i-VTEC engine that combines VTEC, which adjusts intake / exhaust valve timing and lift at high engine speeds, and VTC (Variable Timing Control), which continuously varies the intake valve timing phase in accordance with engine load. The result is a maximum power output of 158kW (215PS) and maximum torque of 202N/m (20.6kg/m).

A short intake manifold with equal-length ducts is used to minimize the effect of intake gas inertia at high engine speeds.

Exhaust gas back-pressure has also been reduced through the use of a dual exhaust manifold, large-diameter piping, and high-volume mufflers.

High-rev-compatible connecting rods made of high-strength materials are combined with a super-rigid crankshaft.


Transmission

A newly developed, close-ratio 6-speed transmission makes effective use of the 2.0-liter DOHC i-VTEC engine's high-end power zone.

Synchro-mesh cones in all gears (triple cones in 1st and 2nd; double cones in 3rd to 6th) ensure a reduced shift load. A short shift-stroke speeds up gear changes for a sporty shifting feel. There is also a control mechanism that closes the reverse-gear shift gate depending on vehicle speed, to guard against shifting errors.

An ultra-light, forged chrome-molybdenum steel flywheel with 26% lower inertial mass than the one used in the previous TYPE R delivers sensitive engine response and sharp acceleration.

A new clutch torsion mechanism reduces the extent to which engine-speed fluctuations are conveyed to the transmission.

Features a torque-responsive, helical, limited-slip differential.

Steve

 

Right off Honda Japan’s web site ? Going to put k20a in my ep3 I have 2 k20a's and one k20a1.. What would you do ? I think the k20a1 is the way to go just for nostalgic reasons.
Where did you find it called a k20a1 ?

Thanks,

JMI

 

Civic SI-K20A3
RSX-S-K20A2
Civic Type R-K20A2
RSX Type R-K20A

 

Read the post...

Were talking about the jdm CTR.

JMI

 

so i drive a CTR

euro CTR k20a2
jdm ctr k20a
jdm dc5r k20a
si k20a3
rsxs k20a2

the k20a engine has diffirent internals than the k20a2 sharper cams and so on but that it you can throw on the k20a cams on the k20a2 which im prolly doing later

 

jdm is k20a!

dont believe this a1 crap til you see a block code pic!

 

ok I have the block.. let you know when I go to the warehouse..

Thanks..

JMI

 

euro CTR k20a2
jdm ctr k20a
jdm dc5r k20a
si k20a3
rsxs k20a2

Civic SI-K20A3
RSX-S-K20A2
Civic Type R-K20A2
RSX Type R-K20A


100% CORRECT
Some people say k20a1 because there is a2 and a3

But honda codes k20a k20a2 k20a3

 

wtf..i wanna see the engine block code for this K20A1...ive never heard of this before...and i didnt know that the JDM CTR has a K20A in it..very intersting...

 

I see a lot of posts about the K20A1. So to solve this mystery, this engine can be found in the Honda Stream (RN3) and is basically the same as the K20A3. I can confirm because I have a Honda Stream as daily and it's a stock car. This engine output is just 156 PS and is the economic version of the K20.

 

Good info.

But I don't think the CTR would've had a 160hp motor.. so maybe the CTR had the K20A motor but with a different ECU tune than the ITR?

 

lol this is an ollllddd thread.
but i also thought the

euro ctr = k20a2
jdm ctr = k20a
rsx-s = k20a2
jdm dc5 = k20a
usdm si = k20a3 (=[ us ep owners got screwed)

seeing as how that person never came back with k20a1 block # picture...i dont see how we'll ever solve this

and im sure if its a k motor it's pointless to figure out the differences
its probably just internal differences

 

*sigh* any k motor in the jdm is stamped "K20A".....from the base model integera to the dc5r....the differance is in the motors, not the stamping. the dc5r has 11.5 to 1 compression ratio,super fine sand used in the casting of the ports in the head and more agressive cams than the usdm k20a2 the ep3r had the same head as the dc5r but it had 11to1 compression ratio.

fyi....the B18/b16 R motors had guys hand grinding the intake ports....honda copied chevy in using ultra fine sand in the casting of the ports of the heads for the k type-r motors to save on paying guys to grind the heads. You want a jdm ep3-r motor? Find a k20z1, same cams, same pistions, same heads and same compression ratio....the only reason its hp numbers are not higher is because the SEA changed the way they rated hp in 2005.

 

dont forget to add lsd to your tranny
that was one of the differences with the dc5r/ctr vs. usdm i believe

 

doesn't matter my K24A2 > K20xx :D

 

word!

although isn't your mpg worse?

 

not on the HWY... I am making 43mpg on the HWY :D



Plus you're on a Honda Forum where people modify there cars... Gas mileage goes bye bye... and you're talking to a guy with a boosted engine who drives the **** out of his car

 

Sorry to reply at an old post, but I was searching for compatibility performance parts for my Honda Stream and just came to this post. Never looked at the last post date.

I couldn't access the stamp on the engine easily, so I hope you're convinced with the car spec plate in the engine bay:



This is a picture of the engine in the car:



The K20A1 is basically the same as the K20A3, but even with lower specs. This is what's been written for the Honda Stream Engine:

CODE: K20A1
YEAR: 2001-2006
CHASSIS: Honda Stream (RN)
POWER: 156 hp@6500rpm / 192 Nm@4000rpm
REDLINE: 6800rpm
C/R: 9.8:1
BORE X STROKE: 86mm x 86mm
SIZE: 1998cc
TRANSMISSION: 5 Speed Manual

Hope it helps.