The Kswap Thread

**Snoop_gee** · 16-10-2014 02:00 PM

Originally Posted by TbM

The prb head casting(k20a, k20a2, k20z1) has more material in it before you hit the water jackets so it can take a bigger port, so a fully ported prb head will flow better than fully ported rbb head.

appreciate the info.

Originally Posted by Vvvtec

Depends how far you want to go snoop, what are your goals?

I have thought about this many of times.
Though focusing more towards Street, reliable Performance in the way of acceleration.
Low and mid to be very sharp and responsive dont really care as much for top end.

And this is the list i have so far

Naturally Aspirated only
Turbo - not interested

Compression
Max suited for regular pump fuel definitely NOT E85.
with the k24 having 12:5:1 i was told would be best suited for my application street but anything higher than that wouldnt tune so well unless its E85.
Clarification and thoughts? about this...

Cam's
Q.aggressive cams does that mean stage 3-5 best suited only for a k24 head while stage 1 and 2 suited for k20 head. ?

Head
valves springs (dual - yes/no?), retainers, Valve Guides, valve stem seals
what would i need to suit aggressive N/A cams

Fuel injectors
Injector size is 1000cc excessive for a built k24?? or what would be best suited for the parts and compressive above.

Intake is going to be 80-90mm
which intake manifolds give that sharp acceleration?

Pistons and Rods suited for reliability on the street and best acceleration in the areas mention. (low and mid)
Dont even know where to start. Would really like some help.

is there anything else i have missed?

**cbauto** · 16-10-2014 02:16 PM

cool.

**r3ckless** · 21-10-2014 03:58 PM

Thanks for the info guys!

Looking to install a K24A3 to replace my K20Z1 when it does give way!

Interested to understand more regarding traction with the new powerplant. Seems like stock K24 with simple bolt ons are hitting 150kw atw and go up to 200kw atw. As most of you are installing in DC2/EG/EK being a much lighter chassis than the DC5, are all of you running 17inch wheels? I know some of the guys run an 18inch tyre setup to get much more affordable tyre sizes and better traction. Would prefer to keep tyre size when upgrading to K24 to a size of 255/40/17 with a high performance street tyre. Question is, will a 255 wide tyre say in a tyre like Hankook RS-3 or Advan AD08R be sufficient for traction on a K24 with power ranging from 150 - 200kw atw?

**Vvvtec** · 21-10-2014 04:40 PM

Yes, the AD08R's are an amazing tyre. Im running 225/45/16 and they are great. 152kw atw.

**r3ckless** · 21-10-2014 05:11 PM

Thanks Alex! I had a read of your thread on ClubITR. Intriguing!

Really quuick question; ITR gearbox with 5.1FD and stock K24. Thoughts? ATM in my GB I have the 5.1FD coupled with Accord Euro 6th gear. Curious to know if anyone has ITR gear ratios with 5.1FD and K24 torque?

**PHO** · 21-10-2014 10:50 PM

Member tBm on here is doing a k24 swap with itr box and 5.1fd in his ek. But im pretty sure hes using 15 or 16".have a talk to him. He should be done with the swap soon.

5.1fd with 17" will be almost the same as alex's 4.7 on 225/45. Unless you intend on running 35 profile on the 17's

**r3ckless** · 22-10-2014 06:40 AM

Thanks PHO.

Yeah when I go k24 will space out my fenders to get enougg room to run 255/40/17on my 9.5jj wheels to handle the power!

Worth going to E85? Or keep it to the common 98ron?

**carayan** · 22-10-2014 09:51 AM

stick with the 98, esp if its a stock motor.

**PHO** · 22-10-2014 09:58 AM

Is the car your primary car? I know sydney dont have a lot of E85 stations, so is there one close to you?

For N/A stock comp I wouldn't bother at all, the availability of 98 just outweighs the pros in performance (in sydney)

If it were melbourne where theres E85 in every second suburb, would just be a personal choice.

Even if you were to do 12.5cr k24, 98 is still fine. Lol