k24a1 or k20a2?

[arthur]

Well i want to swap my a3, but im not sure wich one of this engines is better. I will only put bolt ons, no cams or anything like that. Ill be running kpro. Now wich one is faster??
can a k24a1 be faster than a k20a2, both tuned and same bolt ons (CAI, rh,e)??

[thechromecoyote]

I want to say the k24a1 responds better with bolt ons, but I dont have any fancy charts to post for you :mbiggrin:

Ill always vote the k24a1, the low end torque, mid range power and great response to bolt ons wins everytime in my book...

there is no replacement for displacement.

[&REY]

I think k20a2 will be a bit faster because of 6 speed, but k24a1 might be real close

[koftaboy]

Well i want to swap my a3, but im not sure wich one of this engines is better. I will only put bolt ons, no cams or anything like that. Ill be running kpro. Now wich one is faster??
can a k24a1 be faster than a k20a2, both tuned and same bolt ons (CAI, rh,e)??

hi ive been only on those forms for maybe 2 or 3 month i tell you this every one in hear helped me sooo much and they answeared all my question but from what i learned hear i think the K24 motor would be better because it has lower compression and also because it has 3 lobe vtec on both intake and exhaust but with the A2 you would have to run K PRO anyways am thinking about geting a swap myself but am still thinking on where to get it from i need a trusted website thankx take care:mwink:

[koftaboy]

OHHH by the way get in touch with ( Deadphishy ) he is VERY VERY helpful and ( davisj3537 ) they both helped me aloooooooooooooooooooooot:mwink:

[michinsi]

I think k20a2 will be a bit faster because of 6 speed, but k24a1 might be real close

Because its 6 speed? Topic starter said nothing about swapping it to a 6 speed. I would go with the K24A2....but since thats not an option. I would go with the K20A2. :thumb:

[mikhsoj]

id personally go with the k24a2 and bolt on a JRSC Race kit.

[talonXracer]

K24A1 with a K20A2 head.

[Kerby]

it all comes down to this: Are you keeping your stock 5spd tranny?

if you are, then go with the k24a1. .4 more displacement and flows just as well or better than the k20a2 head. the beauty is no need for k-pro.

the k20a2 is a great engine, but unless you swapped the 6spd over it would be useless due to true v-tec activation with the 5spd, the gears are to low and therefore every time you shift you will drop out of vtec.

stay with the k24a1.




--sent from my pda. hahahaha

[shadowmd]

hi ive been only on those forms for maybe 2 or 3 month i tell you this every one in hear helped me sooo much and they answeared all my question but from what i learned hear i think the K24 motor would be better because it has lower compression and also because it has 3 lobe vtec on both intake and exhaust but with the A2 you would have to run K PRO anyways am thinking about geting a swap myself but am still thinking on where to get it from i need a trusted website thankx take care:mwink:
if he is stayin n/a he would want higher compression. also they only k24 that has 3-lobe vtec is the k24a2. and u don't need kpro to run an a2. he can use a stock a2 ecu, just get it reflashed at a dealership. the k24a1 is a good motor. been in an ep with one. pulls nicely. although i still love my a2 and i love HIGH REVVIN' lol.....so if ur gonna just do bolt-ons....NO CAMS etc. i would go a2. but if u were gonna build. i would do like doug aka talonxracer....k24a1 block with a2/a head, but that requires kpro.

[arthur]

Ill get kpro anyways, i dont think ill get a 6 speed. wich is faster with kpro and same bolt ons??

[RTE117]

I'd prefer displacement, butttt... A2 makes more power, while the 2.4L offers torque, but since you aren't going to modify it beyond a tune, and you haven't suggested a monetary savings benefit from either, I'd definitely go with the A2.

[04cvcsi]

i say only go with the A2 if you have a 6 speed tranny

[sublimejdm]

k20a with Stage 3 Modifications - Naturally Aspirated toda 301bhp @ 9150rpm, RPM limit 10,000 http://www.tdi-north.com/gallery/tdi2-2.htm http://www.tdi-north.com/products/hondatuningpackages/stage3na.htm :mwink:

[shadowmd]

k20a with Stage 3 Modifications - Naturally Aspirated toda 301bhp @ 9150rpm, RPM limit 10,000 http://www.tdi-north.com/gallery/tdi2-2.htm http://www.tdi-north.com/products/hondatuningpackages/stage3na.htm :mwink:

thats a nice setup...but prob. would cost $10,000.00 plus the cost of the motor/tranny which is $5,000.00

[kprocivic]

k20a2 6spd. if you get the k24 youd have to invest in some stickier tires. even with the k24a1 nice flowing head in the higher rpm's it would still fall flat compared to the k20a2.

[shadowmd]

k20a2 6spd. if you get the k24 youd have to invest in some stickier tires. even with the k24a1 nice flowing head in the higher rpm's it would still fall flat compared to the k20a2.



i have a vid of that :mangel: but its a good head

the a1 is a good head, but im still a ricer and love rpm's with the engine screaming. so for me.....a2 all the way

[blackout]

If your only going to do bolt ons. BUY THE K20A2!!!!!!!!!!!!!

Any K24 you get will be taller and make your header fit like crap. intakes will also fit a tiny bit different. If you do the K24a1 you'll get a tiny bit of torque but almost no power gains. With the K20a2 you'll have vtec and it'll really open up with the right bolt ons...


And you CAN use your 5 speed with either motor. Forget about people saying "you'll fall out of vtec". When you swap your car and get kpro, you can tune it to run well with the 5 speed just like the 6 speed.

[shadowmd]

true...but falling out of vtec is something u def. wanna avoid...but yea....go a2 :mcool:

[RON]

If your only going to do bolt ons. BUY THE K20A2!!!!!!!!!!!!!

Any K24 you get will be taller and make your header fit like crap. intakes will also fit a tiny bit different. If you do the K24a1 you'll get a tiny bit of torque but almost no power gains. With the K20a2 you'll have vtec and it'll really open up with the right bolt ons...


And you CAN use your 5 speed with either motor. Forget about people saying "you'll fall out of vtec". When you swap your car and get kpro, you can tune it to run well with the 5 speed just like the 6 speed.

You could do that!!! but hitting redline every gear just to stay in V-tec is stupid.

K24a1 is such a different type of motor then an K20a2... First off the type of power they produce is different (torque vs. hp), you will need a different trans for the A2 (to be really happy), you will need kpro or a different ecu to run the A2, and the cost difference is not even a close comparison.

[6od5peed]

thats a nice setup...but prob. would cost $10,000.00 plus the cost of the motor/tranny which is $5,000.00

Why wouldn't you just do those mods to an A3? Wh!y waste $5000 on a K20A block when it is not any different than the A3 block! All you would need is the head...

[shadowmd]

hey man i didnt do it lol.....

[arthur]

how much does an a2 head cost?? and weight?? i live outside the usa, so i would have to shipp the head from california or florida. Here they never sold the rsx, nor the si ep3. i could find a k24a1 shortblock, and put an a2 head.

[Str3tch]

k20a2 FTMFW! 6 speed, high rev's, who could resist? :mbiggrin:

[03ep3 stapel]

im going to start building my a2 i have in my gerage

[Deadphishy]

K24a1 stock drop in. cheap and peppy with a lot of room to grow.

[bchaney]

K24a1 stock drop in. cheap and peppy with a lot of room to grow.

So true.

You could cam the a1 head, swap heads, cam the swapped head, and even boost in the future.

I'll prob go this route just because there are so many options. Plus all you need is the engine, kpro, clutch/fly, and motor mounts and you're on your way (assuming you already have bolt-ons).

[Deadphishy]

Why wouldn't you just do those mods to an A3? Wh!y waste $5000 on a K20A block when it is not any different than the A3 block! All you would need is the head...

the K20a3 bottom end doesnt make the power with a vtec head that a k20a/a2 bottom does. youll be lucky to reach stock k20a2 numbers with a tuned k20a3 with an a2 head.

[ecsahs3]

if you're not swapping tranny's, i say get the k24 and with the $ you saved over the A2, buy the bolt-ons. or don't go crazy with the bolt-ons and just spend a little more and get a jrsc kit.

have you sourced the 2 engines yet? if so, what sort of price difference are you looking at? that should help your decision.

[Deadphishy]

if you're not swapping tranny's, i say get the k24 and with the $ you saved over the A2, buy the bolt-ons. or don't go crazy with the bolt-ons and just spend a little more and get a jrsc kit.

have you sourced the 2 engines yet? if so, what sort of price difference are you looking at? that should help your decision.

Pappi has been a fav here for k24's and i'm sure he can get an a2 if you ask real nice.

[shivic]

i thin a k24 engine with a k20r tranny would be sweet. that's what im building right now.

[magmagik 1]

If you plan on getting a2 head on that a1, then it will be just as fast if not faster, then a2. A1 without a2 head and same mods as a2 will always be slower.

[arthur]

i found a k24a1 shortblock for about 1000$, plus the head 600$, plus kpro $1000. thats what i could find here outside the usa. if i want an a2 it be more expensive since id have to bring it from the usa.

[lldiesel386ll]

i found a k24a1 shortblock for about 1000$, plus the head 600$, plus kpro $1000. thats what i could find here outside the usa. if i want an a2 it be more expensive since id have to bring it from the usa.

if that is the case i would totally go for the k24/k20 combination. while it is ripped open you should probably replace the oil pump for something better. i have not dug into it too deeply, but i think doug (talonxracer) did and found that the k20z3 oil pump has better idling characteristics of the k24a1 oil pump without its tendencies for cavitation at higher rpms (something that the k20a2 oil pump addresses). i personally have an a2 pump in mine and all has been going well :thumbu:

[socalsx]

Why would you want put a k20a2 head on a k24a1 bottom when the two heads flow nearly identical??

[bchaney]

Why would you want put a k20a2 head on a k24a1 bottom when the two heads flow nearly identical??

For 3-lobe "true" vtec (more hp).

And definitely add the k20a2 (bolts right onto the a1) or k20z3 (modification req'd) oil pump.

[davisj3537]

For 3-lobe "true" vtec (more hp).

And definitely add the k20a2 (bolts right onto the a1) or k20z3 (modification req'd) oil pump.

Well it doesn't bolt straight in...atleast it didn't on mine. I know there are some different k24a1's out there but mine had to be modified. The a2 will give more tq but not as good of idle characteristics like mentioned above. The z3 nets less tq but has awesome idle oil delivery. Basically if you are going to cam it then the a3 is the way to go. If you are not camming it then I vote the a2 pump. There are more modifications to make the z3 pump work....I wrote a DIY on it.:mcool:

[6od5peed]

the K20a3 bottom end doesnt make the power with a vtec head that a k20a/a2 bottom does. youll be lucky to reach stock k20a2 numbers with a tuned k20a3 with an a2 head.

The only thing in the build that wasn't swapped out was the block. All the internals were changed, so it didn't matter if you started with a K20A or K20A3, it would make the same power!

[Guardian]

200hp stock > 160whp stock