KA24DE same as JDM s14 SR20DE ? ?

ONLY for ADVANCED technical discussion about the 240sx!
ESPER
Posts: 525
Joined: Fri Aug 16, 2002 3:14 pm

Post

well probably not, but very similiar i believe.

The US Spec engine's stats are roughly as follows:

155 HP @ 5500 RPM

163 lbs. of torque @ 4200

Now isnt this *almost* identical to the JDM Engine in the Silvia Q'sexcept for the fact that it is a bit better!

JDM Silvia Q's (i believe)

158 HP & 132 lbs. of torque

I am wondering though, does power maintian at high revs?or does it drop off like the ka24de?? Also, i have never driven any honda engines, but do those cars maintain power at maximum revs?? Because like in initial D (even though it is only an anime I know *sigh*) They always keep their cars revving above redline. why is that?? While our s14's need to be shifted all the time right?? well i hope some people out there can provied insight and answers!

thanks again everyone!


I H8 UR DSM
Posts: 3196
Joined: Fri May 24, 2002 8:06 am
Contact:

Post

was a 2.0 L and the other is a 2.4L.....

yes, the SR revs higher....

and thats a cartoon man...hope your doing all your research that way.

jesse

User avatar
C-Kwik
Moderator
Posts: 8070
Joined: Thu Aug 01, 2002 9:28 pm
Car: 2013 Chevy Volt, 1991 Honda CRX DX

Post

Assuming the mechanicals do not fail, the biggest limiting factor for making power at higher revs is how well the motor breathes. And that has to do with the velocity of air in the intake and ports. Typically high lift cams are suited to this, but because they open so much, at low engine speeds, the air is not moving as fast past the valves. And with lower lift cams you get good velocity past the valves, but at higher revs, it starts to choke the motor. As such, higher lift cams tend to have more top end torque and lower lift cams moves the torque peak down.

Hondas tend to build their motors with more toe end in mind. And with VTEC motors, it uses a two stage cam set-up, in which during normal driving, it works off a lower lift cam lobe and after a certain RPM and load, it switches to a higher cam profile. This takes advantage of both. But even with the low lift cam profile, it is still more of a top end motor. The higher lift cam just tends to accentuate it by broadening the power band.

ESPER
Posts: 525
Joined: Fri Aug 16, 2002 3:14 pm

Post

coo thanks for the explanation c-kwik i have been reading about the v-tec hondas for awhile but your explanation sums it up quite cleary. by the way, the cams are responsible for the valve lifts right? so if you get adjustable cams on the ka24de and retard them you can achieve higher end power right?? but on the downside i noticed the engien guzzles more gas at higher rpm's and the more you florr it i see my gas gauge dramatically drop!!

and whats wrong with initial D?!? a good majority of it is true!!

p.s. does anyone out there know who can subtitle my option 2 videos??

CurlyStooge
Posts: 194
Joined: Fri Sep 27, 2002 2:56 am

Post

jesus christ man, where the **** did you come up with those hp numbers for a silvia? damn, are you 12?

ESPER
Posts: 525
Joined: Fri Aug 16, 2002 3:14 pm

Post

although YOU are the one who seems to be 12 posting a response like that!! LMAO aHAHah Well do your research and you will find out that THAT IS the correct ratings for the silvia Q's s14 NA sr20de


Return to “240SX Technical Forum”