All motor 270whp k24a2 pump gas?

[Rage-Nep3]

Hello ephatch,

i finished my k24a2 swap finally! and now i want to up the numbers a lot, i could go boosted and all that but i am wanting to stay NA is it possible to hit 270 with 91 octane gas? would i have to throw on a k20a2 or z3 head? of course


another question that i am curious about is the vtec killer setups? i never heard of a k24a2 block in any of those mentions just the k24a1's and k20a3's

[tlikethedrink]

I think you would be needing a lot of internal work... Like fully built. High comp pistons, cams, p&p... With NA power is a lot tougher to build. There are plenty of builds documented out there with your goals. Follow one of those as a guideline. If it were me... I would have built the longblock before install lol. If I were you, I would buy a K24 and a2 head to build on the side... Enjoy your newly swapped engine ; ) and think about being able to slap a turbo on and hit 400hp for the price of your NA goals lol.

All a2 head use the 3 lobes on the Vtec cams. The A3 A1 and A4/A8 heads use a two lobe VTEC system... In a vtec killer set up the rockers are set on the high lobes of the Vtec cams ALWAYS. So no cross over, all vtec. Kind of like a muscle car with a high cam. Big lopes... look up a video on YouTube. You'll hear it and know what I'm talking about.
In any case... Your already running a better set up in your swap now.

What bolt ons are you running? Tuned?

[differentK]

You could come close with good bolt ons and headwork on a stock block. The stock k24a2 head is going to be your biggest challenge due to its small port design. Look up the NA section of k20a.org- they have some of the best technical info for k motors anywhere.

[Her-Name's-Ally]

hit up fepster I think he has built a 300 hp NA motor.

[Rage-Nep3]

yeah i just looked into all the internal work and prices andddddd yeah i think ill save money and just boost it haha well thanks you guys for the input :)

[gtimportfanatic]

Lol i've got that number 6870

Pretty simple, k24a1 shortblock, supertech 12.5:1 pistons, scat rods, clevite bearings, prb oil pump conversion, 87.5mm bore. K20a2 head, supertech 92lb springs, ferrea 5000 series flat faced valves, kelford 179C cams, xcessive side feed manifold with q45 90mm tb, nissan gtr 580cc injectors, spoon raceheader and ktuned 3" oval exhaust.. There ya go. [emoji23][emoji23]


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[Hasbro]

There's more in here if you take the time;

http://www.k20a.org/forum/showthread.php?t=34644

[1GR8EP3]

270 NA... Nice build GTI

[USAF EP3]

I saw a build over on clubrsx of a member that used the newer K24Z3/7 11.0:1 pistons in an OEM K24A bottom nd build and with the help of aftermarket parts in the head was able to pull high 260whp in an 05 RSX-S.

So that proves you don't need aftermarket pistons to pull off at least 260whp. Keep in mind that a BIG thing about N/A builds is FLOW!!

You need to feed that engine lots of air and escape it just as efficiently. As big of a manifold you can practically/affordably fit, ported runners, throttle body ported to match intake plenum, velocity stack intake, etc. etc.

If you do it right, you can nail 300whp with 11.0:1 compression as long as your head work and what I mentioned previously is on point.