Gettin' the most outta the K24A4.

Suggestions?

Turbo?

isnt there a k24a website? I would start there.......

build it... VTEC IS A NA application if u want a turbo get a non vtech u will be alot happyer... start with the bottom end... rings pistons crank get them all forged and ready to go... next top end... Skunk2 stage 2 racing cams will give u a desent lope and still be just barely streetable... headers... u can get the ones for any accord 03+ sedan or coupe doesent matter... intake... CAI whatever u want i recomend keeping the stock intake all the way up to the air box then going from there with either a custom or whatever pipe theres alot of sensors on our intake so its not cheap to make... if ur gunna be building a beast... stroke it pull it up to a 11:1 ratio (shaved heads shaved block dished out heads and pistons always remember to do that cuz when vtec hits in our cars it wouldent be pretty if the valve slamed into the piston... no no no) u can run a 100 shot of n2o easy enough and definately wouldent have a hard time with anything but cash... o yeh lighten everything flywheel pullys get a better altenator and run a underdrive pully... sooo much stuff u can do o yeh port and polish everything and maby even look into a skunk2 multi staged air intake and a cat back exaust... if u have to smog run a high flow cat if not run a EBAY high flow :)

also a A2 head off a TRX or a JDM k20A3 head off a integra R might work well :)

it is not possible to get a 6th gen LX or EX or any 7th gen accord with non vtec engine.

sure you can, just cut the line for the vtec solenoid then change the cam

quote:

ORIGINAL: marbro

sure you can, just cut the line for the vtec solenoid then change the cam

I dont see why anyone would want to do that.

more low end power vtec is for gas economy if you want power you can only get so much out of a vtec cam, and dynos show that changing it to a non vtec cam increases low end hp and torque

quote:

ORIGINAL: marbro

more low end power vtec is for gas economy if you want power you can only get so much out of a vtec cam, and dynos show that changing it to a non vtec cam increases low end hp and torque

I thought the low cam was for lower rpms that would normally used during cruise speed. And the high cam is for higher rpms, to make good power.

vtec is all about changing ur cams... these arent racing engines (yet) vtec engine is a very weak truely powerless engine untill it hits vtec (or in the case of Ivtec when u mash it) they push maby 100 hp and 100ish foot pounds, what vtec does it totaly recams the engine... the timing advances the valves open more more air more fuel more powerfull spark bigger explosion. thats why our cars dont feel very ballsy driving around but if u stand on it u get pushed back into ur seat... :)... the variable cams is why that its not a good turbo application... Vtec runs the engine way way way weird and when it kicks in specialy I Vtec anyway it just doesent apply well to turbos and they get a little screwy and dont boost right... truely if we want power... non Tec turbo or Non turbo tec will push the most power barnone...

Big race cams dont give good power at low rpm either, and the fuel efficiency would be gone too. And VTEC works very good with turbos. Why wouldn't it? Turboes tend to like higher rpms, just when the high cam kicks in.

but the point that is always made on the turbo is turbo lag, by it being non vtec the turbo lag is reduced, and why the low end sucks on racing cams is cause obviously you arent going to be driving 20 miles an hour through housing in a car made for a drag strip. And the other reason is cause an agressive cam has such long durations and high lobes you arent getting enough air in at low rpms so its kinda useless but with any turbo setup idea turbo starting point for general racing is maybe 250rpm above warmup start idle..... give or take anyways..... but if a turbo kicks in at 1500 rpm youre going to be faster then the guy with the vtec engine whos turbo is kicking in at 3700rpm.
Or be evil and keep the vtec cam and make a make alterations to your turbo that blasts air into the exhaust side of the turbo when you want it to....... so it spools up when your vtec lobe hasnt engaged yet ^_-

The main problem i've heard with vtec and turbos (besides the added turbo lag) is that when the aggresive cam profile is active, there is a lot of boost just blowing in the through the intake valve and right back out the exhaust valve due to the valve overlap.

you have to think of it this way though, that boost that leaks through is also aiding you in maintaining the turbo boost, but yeah, behold that downside of a sohc where you cant retard the exhaust and advance the intake lol

Thanks for the response guys.

http://www.turbo-kits.com/element_turbo_kits.html

Since the Element and Accord share the same engine (K24a), would this is feasible?

EDIT- Universal Turbo? Link: http://www.overboost.com/obs/product.asp?pid=34127&cat_id=1&cat_name=Forced%20Induction&sc_id=3&sc_name=Turbo%20Kits

piping would be all wrong... and the turbo manifild my be to close to the firewall remember turbos GLOW red at night after a hard run... and K24 is a DOHC

Hi Guys!

You know what! That was and is a Great Discussion there amongst you all and I want to commend you all for being Very Adult as you all usually are about 99% of the time..
I was in another forum that I contribute to as a Mod and with-in the 1st 4 posts there would have been an all out War with the words about this...all of you are great contributors in here and All of us MODS and The Admins Thank You for being what you are "The Best HAF Members !

WheelBrokerAng

quote:

ORIGINAL: marbro

but the point that is always made on the turbo is turbo lag, by it being non vtec the turbo lag is reduced, and why the low end sucks on racing cams is cause obviously you arent going to be driving 20 miles an hour through housing in a car made for a drag strip. And the other reason is cause an agressive cam has such long durations and high lobes you arent getting enough air in at low rpms so its kinda useless but with any turbo setup idea turbo starting point for general racing is maybe 250rpm above warmup start idle..... give or take anyways..... but if a turbo kicks in at 1500 rpm youre going to be faster then the guy with the vtec engine whos turbo is kicking in at 3700rpm.
Or be evil and keep the vtec cam and make a make alterations to your turbo that blasts air into the exhaust side of the turbo when you want it to....... so it spools up when your vtec lobe hasnt engaged yet ^_-

How about using an aftermarket vtec cam? Maybe even one designed for turbos? I'm gonna keep my vtec with turbo, it seems to work pretty good. Surprises alot of people. :)

vtec gives you at most 10HP over stock on an I4 in the accord. I would guess that since the .1L increase in tne 6th gen I4(98-02) acocunts for the extra 5hp given to the 6th gen. The intake and exhaust account for 10 of the 15 hp increase. People often swap the EX intake and exhaust onto the non- vtec motor and get 10hp more.

For the V6 6th gen cars swapping in the CL-S cams gives you about 6hp or so......The J30a also responds quite well to FI and it is not required to move the vtec engagement point a super charger and exhaust on a j30a will result in a 60hp increase in performance...

Hey Chiovnidca, do you currently have turbo? I was just wondering at what RPM your turbo really gets spooling if you have VTEC on the motor. I know the boost doesn't show up untill about 3k on my car (no vtec). I've gotta get rid of some of this lag...

Alas, the 7th gen has nothing.

@legionofone
Even a universal turbo wouldn't work?

most turbos are universal, but it would require fabrication and planning, and you would be looking at probably more money then a basic kit...... its doable....... its just time and money thats the factor. You may want to consider hunting down a supercharger kit that may come out before a turbo kit

quote:

ORIGINAL: Chiovnidca
How about using an aftermarket vtec cam? Maybe even one designed for turbos? I'm gonna keep my vtec with turbo, it seems to work pretty good. Surprises alot of people. :)

There are regrinds that can be done on the stock cam, the only other way is to do a custom billet cam which would cost over 800ish a regrind usually doesnt cost more then 300. But there are defined regrinds that increase the lobes for low rpm and high rpm for vtec

and unfortunately i cant remember the website that said this is a turbo regrind but the downside is the fact that sohc have equal intake exhaust have the exact same durations so you cant just define a longer duration for the exhaust vavles

quote:

ORIGINAL: mbo1985

Hey Chiovnidca, do you currently have turbo? I was just wondering at what RPM your turbo really gets spooling if you have VTEC on the motor. I know the boost doesn't show up untill about 3k on my car (no vtec). I've gotta get rid of some of this lag...

I have 2 civics d16z6. Ones got a big turbo, big cam, boost starts taking off at about 4500 rpms. Have vtec set @4000, it runs very strong below that.

The other is my daily driver. Small turbo, stock cam, boost starts at about 2000 rpms, peaks at about 5500. vtec is set at 4000.

quote:

ORIGINAL: marbro



There are regrinds that can be done on the stock cam, the only other way is to do a custom billet cam which would cost over 800ish a regrind usually doesnt cost more then 300. But there are defined regrinds that increase the lobes for low rpm and high rpm for vtec

and unfortunately i cant remember the website that said this is a turbo regrind

So i forgot this was an accord forum, an a/f cam may be dificult to find. But vtec is vtec pretty much.

quote:

ORIGINAL: marbro
exhaust have the exact same durations so you cant just define a longer duration for the exhaust vavles

Same for the non-vtec. But the vtec has the ability to adjust the amount of airflow into the engine on the intake side. Valve overlap is a factor also. With vtec you get the best of two cams: Low rpms: small cam, good idle, good cruise, good throttle responce, good fuel efficiency. High rpms: Good power. :)