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View Full Version : 91k miles on the k20a3....save to supercharge it?



udontknowjack
01-16-2011, 05:03 PM
$2500-$3000 for a k24a4 swapped +/- 160-170 whp and 160 tq

or

get a used JRSC $1500-$1700 plus install/kpro/tune....? whp/tq

beechstreet
01-16-2011, 05:44 PM
k24a4 is more like 130 whp / 130 wtrq. with JRSC-R you'll be making 170 whp+ depending on supporting mods and tune. have you considered the k20a2?

udontknowjack
01-16-2011, 05:59 PM
i was told k24 from accord swap into EP3 will get 160/160 whp/tq... that was from JEI (blacktrax) who did it to his own car few year back....

k20a2 is little out of my price range....$3000 is about max....and i want to use the k20a3's tranny.....cuz im about to install a LSD and fix the 2nd-3rd gear grind....

Passenger
01-16-2011, 06:16 PM
160hp/160tq will be what its rated at the crank, not the wheels

beechstreet
01-16-2011, 06:19 PM
160hp/160tq will be what its rated at the crank, not the wheels
:yeahthat:

udontknowjack
01-16-2011, 08:00 PM
Oh hell nah..

So with 91k on the clock... Safe to boost?

04EP3Hatch
01-16-2011, 10:15 PM
i supercharged at 93k on stock clutch, went to 11psi/watermeth/3 inch exhaust, im now at 112 still on stock clutch car is holding up like a brute

RHCP0801
01-16-2011, 10:23 PM
k24a2 swap, should be able to get it for like $1800

udontknowjack
01-16-2011, 10:39 PM
k24a2 swap, should be able to get it for like $1800


$1800 for k24a4, install, kpro and tuned?

udontknowjack
01-16-2011, 10:40 PM
i supercharged at 93k on stock clutch, went to 11psi/watermeth/3 inch exhaust, im now at 112 still on stock clutch car is holding up like a brute

Good to hear that... Thanks

RHCP0801
01-16-2011, 10:50 PM
no, k24a2 that makes a whole lot more hp and tq, install it yourself and tune is $500 on top and of course kpro is 1k

k24a2 makes over, sometimes well over 200hp with just bolt ons like mine, 235hp 191tq

udontknowjack
01-16-2011, 10:58 PM
no, k24a2 that makes a whole lot more hp and tq, install it yourself and tune is $500 on top and of course kpro is 1k

k24a2 makes over, sometimes well over 200hp with just bolt ons like mine, 235hp 191tq


Wish I'm good with the wrench... =(

vbpracer
01-16-2011, 11:09 PM
The k24a2 is the best motor you can swap. I have had both a jrsc k20a3, and an n/a k24a2 with good bolt ons. The tsx motor was substantially more powerful than the k20a3 with jrsc.

04EP3Hatch
01-17-2011, 05:19 AM
The k24a2 is the best motor you can swap. I have had both a jrsc k20a3, and an n/a k24a2 with good bolt ons. The tsx motor was substantially more powerful than the k20a3 with jrsc.

how much power did you make with the A3? i want an A2 so bad that would easily net me the 12 second timeslip im gunning for with the A3

udontknowjack
01-17-2011, 07:16 AM
The k24a2 is the best motor you can swap. I have had both a jrsc k20a3, and an n/a k24a2 with good bolt ons. The tsx motor was substantially more powerful than the k20a3 with jrsc.

What kinda number can I see with the k24a2? Can I use the bolt on I have now from the k20a3? i/rh/e ?

RHCP0801
01-17-2011, 09:57 AM
you will see between 210-240hp and 190-205tq depending on your setup and tune, the stock exhaust can be used but you need to take it to an exhaust shop to have the cat area lengthened a bit due to the higher sitting motor. Cold air intake cant be used unless you get a 90degree elbow and modify the cai, short ram maybe...depends on which one

udontknowjack
01-17-2011, 12:40 PM
Those are at the wheel or crank?

mitchlikesbikes
01-17-2011, 03:58 PM
if i had the money and resources for any of these i'd definitely go with a k24a2. i want more torqueee

udontknowjack
01-17-2011, 04:09 PM
if i had the money and resources for any of these i'd definitely go with a k24a2. i want more torqueee

Get a mazdaspeed 3 if u want torque.... With just bolt on n tune I was able to get over 300tq... Oem engine/turbo..!

Passenger
01-17-2011, 04:52 PM
Get a mazdaspeed 3 if u want torque.... With just bolt on n tune I was able to get over 300tq... Oem engine/turbo..!

cool story bro, thanks

T_Virus
01-17-2011, 07:51 PM
Get a mazdaspeed 3 if u want torque.... With just bolt on n tune I was able to get over 300tq... Oem engine/turbo..!

so what are you doing with a EP?

RHCP0801
01-17-2011, 08:03 PM
Those are at the wheel or crank?

thats at the wheel

udontknowjack
01-17-2011, 08:09 PM
so what are you doing with a EP?


I like to drive different cars every other yr... It's a very bad virus... And I'm trying to stop with the ep3

udontknowjack
01-17-2011, 08:11 PM
thats at the wheel


Looks like k24a2 is the way to go if I ever do swap? Let see how this year autox season go.... Thanks

mitchlikesbikes
01-17-2011, 09:00 PM
Looks like k24a2 is the way to go if I ever do swap? Let see how this year autox season go.... Thanks

once again, cool story bro. if i wanted a mazdaspeed3 i would have bought a mazdaspeed3. i wanted an EP3 so i bought an EP3. and i don't really see how you can brag about your Mazda and then immediately mention swapping a k24a2 when that's what i was just talking about haha

codyep3
01-18-2011, 12:44 AM
thats at the wheel

dude, stock k24a2's put down like 170-180 whp stock. No way your putting down 230whp n/a

udontknowjack
01-18-2011, 08:09 AM
once again, cool story bro. if i wanted a mazdaspeed3 i would have bought a mazdaspeed3. i wanted an EP3 so i bought an EP3. and i don't really see how you can brag about your Mazda and then immediately mention swapping a k24a2 when that's what i was just talking about haha

Sorry if I hurt anyone's feeling talking about other car... Wasn't trying to brag... I promise I'll never talk about my pass cars n just focus on what I have now...

RHCP0801
01-18-2011, 09:40 PM
dude, stock k24a2's put down like 170-180 whp stock. No way your putting down 230whp n/a


ok right, k24a2 with 3" exhaust, ssr race header and velocity stack intake will and does make a lot more than 180hp

here look at all this

http://www.k20a.org/forum/showthread.php?p=834884&highlight=k24a2#post834884

http://www.k20a.org/forum/showthread.php?p=606388&highlight=k24a2#post606388

even shitty header and stock muffler makes over 200

http://www.k20a.org/forum/showthread.php?p=474747&highlight=k24a2#post474747


http://www.k20a.org/forum/showthread.php?p=261443&highlight=k24a2#post261443

would you like anymore proof? dumbass

codyep3
01-19-2011, 12:18 AM
ok right, k24a2 with 3" exhaust, ssr race header and velocity stack intake will and does make a lot more than 180hp

here look at all this

http://www.k20a.org/forum/showthread.php?p=834884&highlight=k24a2#post834884

http://www.k20a.org/forum/showthread.php?p=606388&highlight=k24a2#post606388

even shitty header and stock muffler makes over 200

http://www.k20a.org/forum/showthread.php?p=474747&highlight=k24a2#post474747


http://www.k20a.org/forum/showthread.php?p=261443&highlight=k24a2#post261443

would you like anymore proof? dumbass

congratz on using posts from a forum I am not registered with. A 3 inch exhaust is for F/I? Why would you use that big of a pipe for a N/A build. Stock K24a2's do put down around 180whpish. I would like to see your bolt ons add on 50whp rofl. I can't see the forum posts, but I bet they were using dynos that showed more power than they had. Plus you fail at reading. Look at my post again. OP, you will not make 230whp with simple exhaust bolt ons

RHCP0801
01-19-2011, 09:31 AM
yea, everyone who dyno's k24's used a dyno that increases hp. Just google k24a2 dyno and you will see

No, a 3" exhaust is not for FI

everything your saying is pointless right now because i gave you 4 threads with proof they make over 200hp with bolt ons, and here is one from ephatch that im sure you can see unless you want to make up some other excuse

http://www.ephatch.com/forum/showthread.php?60367-finally-tuned!-k24a2-dyno-results&highlight=k24a2

http://forums.clubel.ca/showthread.php?t=33001

i dont know how much more proof you want

codyep3
01-19-2011, 10:00 AM
first thread you posted, the setup was used on a dynopack, which give higher numbers than usual. I am done arguing with you because you are simply not willing to understand the facts. Yes 3 inch exhausts are used for F/I because of the fact that the high speed and pressure of the exhaust gasses is better expelled and more effieciently through a larger pipe. 2.5 pipes are perfect for N/A builds. Do some research instead of just googling stuff and posting it. Kthxbye

RHCP0801
01-19-2011, 02:37 PM
hahaha so good

what about the other 100 links i posted? cant argue dyno's from 8 different cars loser



http://dynos.evans-tuning.com/2010/11/rsx-tsx-swap-rbc-bolt-ons-230whp177tq-kpro/

AKEP
01-20-2011, 01:18 PM
first thread you posted, the setup was used on a dynopack, which give higher numbers than usual. I am done arguing with you because you are simply not willing to understand the facts. Yes 3 inch exhausts are used for F/I because of the fact that the high speed and pressure of the exhaust gasses is better expelled and more effieciently through a larger pipe. 2.5 pipes are perfect for N/A builds. Do some research instead of just googling stuff and posting it. Kthxbye

you sir, are really dumb. foreal.

go read some engine section. go register at the other forums and read about k24a2 swaps. they average 200 with just kpro tuning and stock manifolds and piping, then average 220+/- with bolt ons.

codyep3
01-20-2011, 05:10 PM
you sir, are really dumb. foreal.



http://www.youtube.com/watch?v=EzNhaLUT520
1:25 mark

that is all lol. I know k24a2's silly

RHCP0801
01-20-2011, 06:21 PM
doesnt seem like you do at all

mitchlikesbikes
01-20-2011, 06:25 PM
http://www.youtube.com/watch?v=EzNhaLUT520
1:25 mark

that is all lol. I know k24a2's silly

i hate to keep adding shit to the storm but IMO legit links with dyno numbers>your word. sorry

AKEP
01-20-2011, 10:02 PM
lol i thought i got antione roll'd, then i realized what happened.

http://en.wikipedia.org/wiki/Honda_k_engine#K24A2
Here, it does say it maps 200hp @ crank, which is, if we give 10% drivetrain loss, 180whp.

as we already know, honda likes to run these engines with gimmiky conservative tunes to help prolong the life of the engine.

example, the stock calibration on my kpro for an a3, will dump enough fuel to hit the 11.5 AFR @ WOT. not optimal. at all.

more power can be made by fixing that. and with the motor built like the k24a2, 20hp is pretty fair, maybe even a little high, for stock air flow.

throw an RBC, 3" CAI, R/H, 2.5-3" piping, you can def see 215hp easy. 45* cam angle mod, and 91-93 oct, and i can def believe 220-230 numbers on this engine.

If I wasn't boosting mine, i'd def put up a bolt on dyno sheet of it when it was done.

vbpracer
01-20-2011, 10:17 PM
Christ you guys are talking peanuts here!

AKEP
01-21-2011, 12:35 AM
your mouth is a peanut!
jk, but seriously...
http://www.hondata.com/tuning_the_tsx.html

about 1/3 the way down, dyno type sheet.

its so unfortunate that it takes forever to tune a tsx ecu.

udontknowjack
01-21-2011, 11:41 AM
Kids... Can we all just get along? Lol....

I think I made up my mind... S/C first... N if the k20a3 go boom then step up to k24a2...

I'll go with rotrex since only a handful have use them... Shooting for April... Birthday present... Hehe

ckenneally18
01-25-2011, 06:12 PM
I will be going qith the s/c also. Like you i will just swap the motor when it goes boom. pm me when you get it set up and let me know how it goes!

udontknowjack
02-01-2011, 04:28 PM
Exchanged a few emails with Jei @ blacktrax about kraftwerk rotrex super charging the A3... He told me to rest assure, with an efficient rotrex at 10psi should produce about 100-120whp... That's music to my ears... Exactly where I want my whp goal to be for autox n track day...

Can't hardly wait till late march-april

BeaterEP
02-14-2011, 07:08 AM
...so would SC'ing an A3 w/200k+ miles be bad, ya think?
:mbiggrin:

Seriously though, been thinking about it, thought I'd post up in a "high-mileage" thread and get some opinions.

Blue03Si
02-15-2011, 02:32 PM
Exchanged a few emails with Jei @ blacktrax about kraftwerk rotrex super charging the A3... He told me to rest assure, with an efficient rotrex at 10psi should produce about 100-120whp... That's music to my ears... Exactly where I want my whp goal to be for autox n track day...

Can't hardly wait till late march-april

Just keep in mind that you can't swap any k24 legally in California and the only CARB approved forced induction system is the JRSC street kit. Just some food for thought if you plan on driving your ep3 on the street still. If you want to make it a dedicated auto-x car and trailer it in your on the right track though.

jtrolinger
03-03-2011, 01:26 PM
Just keep in mind that you can't swap any k24 legally in California and the only CARB approved forced induction system is the JRSC street kit. Just some food for thought if you plan on driving your ep3 on the street still. If you want to make it a dedicated auto-x car and trailer it in your on the right track though.

Sir, I don't mean to undermind your thoughts on legal or illegal k24 swaps but coming from someone (ME) who has had countless run-ins with CHP/CAL STATE REFS; It is absolutley legal to swap a k24 into an EP3 provided it comes with OEM factory smog equipment. I hate to beat a dead horse but the law states the engine has to be from the same MAKE and NEWER year than it's going into. Also it has to be in the same class.. (ie regular, heavyduty, exc). heavy duty is a 1 ton truck so as long as your not taking an engine from a Honda Truck then your good. CRV is not a 1 ton truck and falls into the regular class, as does rsx,TL,accord,exc. If the law has changed in the last year I apologize. Any more info can be obtained here: http://www.arb.ca.gov/msprog/aftermkt/devices/amquery.php

Blue03Si
03-03-2011, 02:13 PM
Sir, I don't mean to undermind your thoughts on legal or illegal k24 swaps but coming from someone (ME) who has had countless run-ins with CHP/CAL STATE REFS; It is absolutley legal to swap a k24 into an EP3 provided it comes with OEM factory smog equipment. I hate to beat a dead horse but the law states the engine has to be from the same MAKE and NEWER year than it's going into. Also it has to be in the same class.. (ie regular, heavyduty, exc). heavy duty is a 1 ton truck so as long as your not taking an engine from a Honda Truck then your good. CRV is not a 1 ton truck and falls into the regular class, as does rsx,TL,accord,exc. If the law has changed in the last year I apologize. Any more info can be obtained here: http://www.arb.ca.gov/msprog/aftermkt/devices/amquery.php

Sir, I don't mean to undermind your thoughts as well but refering to the information that you so thoughfully provided which i have greatly researched please read the following.

"Engine Changes
Engine changes are legal as long as the following requirements are met to ensure that the change does not increase pollution from the vehicle:

* The engine must be the same year or newer than the vehicle.

* The engine must be from the same type of vehicle (passenger car, light-duty truck, heavy-duty truck, etc.) based on gross vehicle weight.

* If the vehicle is a California certified vehicle then the engine must also be a California certified engine.

* All emissions control equipment must remain on the installed engine."

The key sentance here is "All emisions control equipment must remain on the installed engine." Almost all of honda's engines now include an EGR system. Every swap install that I've read required the removal of the egr system (since our ECU and wiring harness can't hook up to or controll them) and block off plates installed. By doing this you just modified the emisions system on the engine and a competent state bar referee will catch this. Also a key factor is the enginer must be a california certified engine. Engines coming from out of state might not be CA certified and they can check this by running the engine vin. Possible strike 2. I have not met one person in the bay area who has been able to get a k24 engine to pass the referee inspection. I've met plenty of people who have gotten k20a2s and k20as to pass though. As a not the k20a & a2 do no have egr systems just like the a3.

So before you fire off an condescending "sir" message post you might want to check your own facts.

http://www.arb.ca.gov/msprog/aftermkt/replace.htm