JTUNE - K20+K24 Engine build for Test Rabbit EP3

[Genkei]

Pleaose note :
There wont be a spell check or proof read done. . . if u dont understand just ask
too lazy for that, so please put up with it kekeke. Thanks



Finally . . .. had time this weekend and start muckin around with the engines ive got sititng in the storage

The purpose of this build is to show others, how much potenial these engine has from factory ! AND using factory parts

This engine will be ending up in my new EP3 which i got offer from Willy_Lotus ( thank you ! ! ) to save the time doing a k swap type of thing. It not really the fact on the cost of doin a k Swap conversion, i just want it done soon as pssible not likea 6 month time kind of project . .

This wont be a show car or a Race car, so u wont see anything fancy or doin good times at the drag, is really just a test on a hybird K24, How much will cost, how reliable it can be, how much power i can make with different parts

We decided to do the build at home rather then work, so will get more time on it and parts going MISSING ! ! . . .

There are few guys been playing around with these but we never get to see wats inside and wat are the difference in terms of componets, parts and the design of these engines

Most of the cars we do are just K20A which are normall Dc5 TypeR, the k20A in the FD has alot more power and potenial then the Older K20A,
Is very easy to get power out of the K Series compare to the B Series

Anyway though ill make a start and see wat we can get out of these just by cross matching Honda parts

We do have a power figure set in mind and see if we can reach our target . . . might be running a K Pro there is nothing cheaper on the market that can do the same job. Plug it in, tune it, $2500 area all done

So wat are the difference in the k20A ( K20A means JDM Type R engine K20 ) to a K24A2orA3 found in our local Accord Euro CL9 . . .

ANd is there a point changing a K20A head on to K24A2 which is already has Vtec on both Cams? Think it will make the simlar power if we just throw a set of R cams at it


We will be ending up with

- K20A head with TypeR cams, TypeR valve springs ( means Dual valve srings ), Sodium filled valve . . .

- K24A2 Bottom end

- Balancer Shalf will be taken out, by doing this, there will be less load for the engine to drive, which we should see a slight power increase, "yanks says it will be close to 8hp )

- ERL S2k Oil pump upgrade which there will be enough oil supply up tp 11000rpms + which is also a safety item.
Most the time, when these engine goes boom is due to the lack of oil pressure and high revving.

Factory K20 pump is good enough for 8500 to 8800 but is really pushing it

Even with modifcation on the k20 pump, 9000rpms will be the very max.

The peak power with standard TypeR cams is normally around 8300 but if we DO miss a gear . . .. might not like it
So we are 100% sure to put the s2k oil pump !


This is the K24 off CL9 - Factory power rating 200hp



This is the spun bearing K20A off a DC5 which has been sitting around for awhile might fix it and sell it later on


K24 with rocker cover taken off


Cam Gears says it all RBB


Valvetrain taken off getting ready to rip the head off


Top Man at work ! ! ! ripping out the sump to be baffle


This is wat it looks likes at the bottom of a K24a, oil pump and pick up is build together in one unit and underneth the pick up, is the balancer shalf unit

[Genkei]

From the Pictures below, u can tell why the k24A Doesnt make as much power compare to the k20 Brother. .

- less compression
- smaller tubing extractor
- mild cams
- smalller iand longer intake runners

It was designed for more low end torque, rather then high reving power like the K20a plus the cams is not agressive compare to the k20 s.......

long runners, smaller ports. Quick respone lots of mid range power and torque
The K24 can make peak power at 6800


From this pic . .
Top being k20a intake mainfold
bottom beting k24a intake maninfold
You can clearly see the K20a intake has larger ports then the K24a
Ive use the same intake gasket to compare the port size

Top TypeR, Bottom K24


k24


k20



The actual port size on the Head is identical . . . . but for some reason the intake mainfold port is that much smaller

Intake valves is different part number but same size
but exhaust valves are the same

TypeR Intake valves are sodium filled just like the B Series TypeR

[Sleepy]

Watching this keenly!

[Genkei]

there are few guys on the forum that knows alot on these K series Engine,

if u have time.... please just go for it and share wat u know !

[BurgerBoy]

Subscribed. Looking good Jacky. Can't wait for more.

[Coupe-R]

Interesting, I know nothing about the K sorry. I'll be watching this info tho

[Non Vtec]

for a point of reference the exhaust cam on the 200hp K24 is actually meant to be bigger than that of the JDM K20A, since the JDM K20A runs a bigger cam than that of the NZ and USDM K20A2.

The VTC adjustable cam gear that the K24 has only adjusts 25 degrees of crank timing, where as the K20A adjusts 50degrees.

[dazznz]

Nice. Even with standard parts in it, it should be a monster. I wanted to go down this line with my car, but that was going to force me out of ss2000, and with the k20 on its own you still had to spend alot to get good power and that was on top of the conversion costs.

Look forward to seeing how this thing goes.

[Gudgen]

theres a walk through on k20a.org on how-to do the hybrid build.

[Genkei]

the setup for the k20a will cost abit
but compare to a Sleeve 2.0 B Series, for the same money u spend on the K20, engine it self, there should be more power then a B series ?


was planning to throw piston and rods at it, but then dont see the point, is gonna be a daily and we wont see how much power it can make with OEM parts

There is a Dc5r around with a k24 bottomend driving around, but heard it was send back to South Africa, it was imported from Japan

[Gudgen]

you should be able to get 180kw with a stock k24 bottom with cams and k-pro.

thats already at least 20kw more than a heavily modded b-series. or on-par with a soupped up h-series...

[ITR_cam]

2.4L is a whole lot of cc

cant wait to go for a drive in the rabbit

[Coupe-R]

thats already at least 20kw more than a heavily modded b-series. or on-par with a soupped up h-series...

or around what a big bore B series runs with cams not as much torque tho

[spooner]

Am really interested to find out more info on the K series as well so im keen to see how this goes.

[Baz]

The cover car of honda-tuning magazine last month was a k20/k24 using f20c pistons that was in a race series in america, they used s2000 pistons because they were limited in the rules to the internals. Really interesting read.
For the feature:
http://www.hondatuningmagazine.com/f...nge/index.html

[Genkei]

yup

check out the lastest Super Street. . . HONDA bible this month

a civic from here mean to be on it aswell but . . ..

[Gudgen]

Originally Posted by Genkei

yup

check out the lastest Super Street. . . HONDA bible this month

a civic from here mean to be on it aswell but . . ..

gotta link?

heres a very simple write-up on a frank hybrid. i'll try and find the details one.
http://www.k20a.org/forum/showthread.php?t=13887

[Gudgen]

Originally Posted by Coupe-R

Interesting, I know nothing about the K sorry. I'll be watching this info tho

http://www.k20a.org/forum/showthread.php?t=28668

there you go brutha! read this till your hearts content!!!

[Genkei]

Originally Posted by Gudgen

gotta link?

heres a very simple write-up on a frank hybrid. i'll try and find the details one.
http://www.k20a.org/forum/showthread.php?t=13887

opps . . that post wasnt me to be posted here LOL

got more pic of other bits and pieces upload it later in da week but yeaa easier if u just on k20a forum

save me time now
Ill just post up the result once ive finish this motor

[CL7R]

A Hondata K-pro may be a good companion for this build...

[Horny_Devil]

Originally Posted by CL7R

A Hondata K-pro Will be a good companion for this build...

edited

[Genkei]

to be honest

dont really like . . . but no choice, plus is cheap
if i can get a aem for 2500 ill rather try that

( is just me . . . never liked Hondata )
Spoken to few Top Us Honda builder and racer, it was the last on the list of wat they recommended

Not saying is bad, it has lots of feature and not hard to tune


wont be using it for a heavy K build, i know there is cars out there making over 250kw at wheels NA with it

Skunk2 Delta drag car was using it for a short while b4 upgrading it to a M800

[dazznz]

I have to agree with you Jacky. I think that for the money Hondata is very good, and this can be seen with some of the production dc5's that have managed to tune a fair few kw's out of them with it. However if you were planning a major build, and you had the funds to do it, then there are some far better systems out there such as Motec. However these systems do cost a lot more, and also you will most likely find that the tuning time will be increased.

I know some of the guys in the v8 touring cars where their computer system owes them 30k+. Because when you buy a motec system you then have to buy all of the sensors that you want to have, and also each time you have to pay to unlock that feature on your motec. Can end up being very expensive.

Bang for Buck, Hondata = Win

[CL7R]

Just annoying that Hondata doesn't produce K-pro for CL7...it needs to use an adaptor harness from DC5, which means you have K-pro + DC5 ECU (for timing/igition) + CL7 ECU (air-con, electronics)

[Genkei]

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