Does anyone have 1/4 times (for reference)

Information on the naturally-aspirated KA24E and KA24DE engines.
Touge Runner
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Of an S13 with an injen intake, a header, a cat-back exhaust and pulleys?

I know that should be good for about 160-165 at the wheels assuming the engine is solid, is a 15.0 realistic?


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zachosz
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It's probably closer to 15.2-15.3. I've seen people with more mods than this go slower than me, and i only had Injen intake and Dynomax muffler. My best time was 15.544 @88 mph, so i assume a 10-15 more hp would realistically be .2-.3 sec faster.

R240NA
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Touge Runner wrote:Of an S13 with an injen intake, a header, a cat-back exhaust and pulleys?

I know that should be good for about 160-165 at the wheels assuming the engine is solid, is a 15.0 realistic?


Realisticly, those mods may net 145 at the wheels.

Former_240_s14
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I would have to agree with r240na. I would have to say about 145rwhp and prob. about 155ft. pds of torque. I don't think you would get a 15 flat but maybe mid 15's. Just my opinion though.

Touge Runner
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Ok, besides weight reduction and no internals, is there anything else that could knock it closer to 15 flat?

Former_240_s14
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There are a bunch of things you can do to knock a few hundreth's here and there, but nothing concrete if you DON'T want to do internals. Either you gotta go internals, or forced induction, or both in MY opinion, but prove me wrong if you can, I would like to see it happen myself.

Zebrahead
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Intake/Header/ExhaustCamsPulleysRace ClutchFlywheelElectric FanSticky Tires

These should net a high 14 on a strong KA24DE.

Nick.

doctorj240
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I'm running low to mid 15s (15.2-15.4) with my setup (I/H/E, pulley, clutch, flywheel, electric fans), no weight reduction. I wish I had some drag radials to help out my traction. I launch at around 2000 rpm and still spin. I think low to mid 14s are possible with ECU, cams, good tires, ported & polished head, increased compression and some suspension work in addition to my mods but that gets expensive.

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Lepchitz1
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damn...where do you all get the money to do all this? haha

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Lepchitz1
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also another question...

When i first got my 240 my friend purchased a 96 integra LS. We went to the strip and i was beating him by a car and a half easy, and he already had an intake. Then last week (after I did Intake, fixed oil leak, new tires, advanced my timing, and clutch fan removal..he did an aluminum core raditator and advanced his timing and thats it) NOW HE BEATS ME BY A CAR LENGTH! How does this happen? Now my transmition has gone to ****. Vould this be slowing me down. I have to shift slower, but it shouldnt be making that much of a difference...anyone??

sts76
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15.792@86mph Stock ka24de with Hotshot header.

doctorj240
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Lepchitz1 wrote:...NOW HE BEATS ME BY A CAR LENGTH! How does this happen? Now my transmition has gone to ****. Vould this be slowing me down. I have to shift slower, but it shouldnt be making that much of a difference...anyone??


Slower shifting will slow you down quite a bit. The longer that your car isn't producing torque to the ground the longer its going to take to get to the end of the track. You also lose a lot of momentum or speed from drag if you aren't creating force. Also your revs will drop quite a bit from a slower shift. You'll have to make up time while the revs get back up. If you lose even a quarter of a second from a slower shift and multiply that by 3 over a quarter mile you lose .75 seconds. Losing speed between shifts will probably lower you even more, probably another .5 seconds. So that's about 1.25 seconds or a car length. I'd say get a new tranny and short shifter and see what you can do. You'll probably pull even or beat him then.

S14Zilvia
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um...

1.25 seconds OR a car length?

if your car takes 1.25 seconds to go 10 feet something's wrong.

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Lepchitz1
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well....i got a new clutch, lightened flywheel, and have a tranny with 30k on it about to go in so well see

Nismo_Freak
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Remove the rear sway bar for better traction off the line... just remember to put it back.

I ran a 16.0@85... but I have 123k of hard miles and the compression has dipped down a bit. I have cams, intake, advanced timing, cold-air intake, test-pipe, and a muffler. Pulleys and a header would do wonders for the car right now... it would prolly put me at a 15.7-15.5

MorganS13
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i ran mid 16s (can't remember the times off the top of my head) while missing 4th gear and a HORRIBLE 60' (3.2 :( ). i'm hoping to get low 15s next season with better tires and a VLSD which is going in this month. i'm trying to get into Autocross next season but its nice to know that my engines making the power it should...

engine/tranny mods: Place Racing CAI, Apexi N1 Dual, OBX short shifter, (hotshot header going in this friday) :)

s13 ka24det
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I never been to a track, but from a stop light I race my friend in a Honda crx si with a header/CAI/Custums exuasted and advanced timing. He has been to the track and has run 15.9@88mph. I beat him by a full car lenghth 0-90mph. He also had racing gas and a new racing cluch.My 92 240SX LE IS STOCK. 161K on it, it also red lines at 7200rpm. I bought the car used with a 140k on it. It is save to say I am runing 15.7in the 1/4 mile.Turbo soon to come.

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zachosz
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Isn't the redline at 6900 rpms?

s13 ka24det
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zackosz YOU are right red line is at 6900 rpms, but fuel cutoff is not until 7350 rpms.So i shift at 7200 rpms. my 240sx pulls like there is no tomorrow to fuel cut off.Is this the same as other 240...........1st gear shift point 40 mphs,2nd gear 70 mph, 3rd gear at 100 mph.Ihave beaten all the NA 240SX IN WILMINGTON NC,I thougt it was because I was a better driver.It could possbile be that it could havea a ECU,or Cam upgrade ,I dont know because I bought the car used at 140k. Is my car normal.

s13 ka24det
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turbo soon to come!!!

Nismo241
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I went [email protected] in my sohc with intake and exhaust. I don't see why everyone thinks you have to go internals to get mid 14's. I plan on that with bolt-ons and a cam, but I wouldn't consider a cam as building internally.

Structure240sx
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check my sig. hope to get 15.7 with the header

doctorj240
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15.2 w/ 180lb passenger no other lightening s14 w/ injen intake, hotshot header, hks dragger piping to custom muffler, electric fan, spec stage 2 clutch, fidanza flywheel, asp pulley.

I think 15.0 is possible w/o the passenger and lightening

doctorj240
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that was on crappy stock intermediate tires too, man i need tires :)

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WDRacing
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100lbs is a sec in the 1/4 on average.

Without forced induction or high compression a 2.4 in a fairly heavy car is going to be slow. So unless you get your head decked and do some internal work...

I would try a 75 shot of N20.

WD

Structure240sx
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every hundred lbs off is a tenth of a second off 1/4 mi times on average

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WDRacing
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Structure240sx wrote:every hundred lbs off is a tenth of a second off 1/4 mi times on average


Is it only a tenth, I thought it was more then that. I was averaging 2 secs faster in the 1/4 without 210lbs of passenger. Over repeated tests.

WD

Structure240sx
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thats impressive. maybe ur right im goin off off what i heard form one of those shade tree tnt mechanics shows a while ago. they deal with mainly the heavy V8's but it cant be that much of a difference for a car 7-800 lbs lighter. of course it seems u have proof. what is ur time and with what

jrc90240sx
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I think that the weight come down more to torque then anything. if you car has 300 lbs/ft its not going to notice 100 lbs a weight as much as a car with only 150 lbs/ft. to take my friends mustang, it realy isnt much slower with me in the car (220) where in my car with both of use there is a big difrence.

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WDRacing
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Structure240sx wrote:thats impressive. maybe ur right im goin off off what i heard form one of those shade tree tnt mechanics shows a while ago. they deal with mainly the heavy V8's but it cant be that much of a difference for a car 7-800 lbs lighter. of course it seems u have proof. what is ur time and with what


Those runs were in my first Skyline. My times were going from 13.1 to 14.7/14.9 with a passenger. The RB20DET is no 'Q' monster thats for sure.

WD


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