**Make more power in my KA24DE**

Information on the naturally-aspirated KA24E and KA24DE engines.
robbie2009
Posts: 99
Joined: Thu Nov 29, 2007 2:46 pm
Car: 1993 Nissan 240SX SE HB

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I just got my 240sx se with the KA24DE. I already have a intake and exhaust system on it. What are some other cheap ways to make more power out of my NA Ka, any ideas? Like what would be the best cams to buy for it, and since it has 184K miles on it would it be advisable to fully rebuild the motor? Thanks!!! HAVE A NICE DAY


chrismo240sx
Posts: 490
Joined: Mon Feb 05, 2007 10:57 am
Car: 92 240sx HB
S13 Blacktop
Location: Coram, NY

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um 264 cams should do good for daily driver but i would suggest a rebuild if ur gonna put cams on there...otherwise, high flow cat and headers if u dont already have them...its a lot of money and somehwhat hard to get major hp from a ka24de (roughly 180-190hp), maybe try looking into a swap...

s13rb25det
Posts: 598
Joined: Wed Mar 23, 2005 5:30 pm
Car: 92 240sx w/rb25det

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save up and put a turbo on it, thats the only way to make good power from the ka with out robbing the 7-11 every other night.

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MoldyOldy240
Posts: 600
Joined: Thu Jun 08, 2006 3:51 pm
Car: 1991 240sx 295K w/ original engine.
Contact:

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one of the rice o matic mags just did a NA KA article

it went something like this

intake gives you + 1 HP +1 TRQHeaders gave + 6 HP +4 TRQExhaust gave + 16 HP +10 TRQ

Something like that; pls correct me if I am wrong as I don't have the article with me.

Or you can try out the 2.65 stroker kit lol I'd love to see what that does

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zack240man
Posts: 184
Joined: Wed Oct 17, 2007 6:40 pm
Car: s13 hatch ka24det & s13 coupe sr20det

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rebuild it just do it the timing chain is not to relable after that many miles. while your rebuilting it drop some jim wolf s1 cams bc over sived valve spring and bore it 40. that pretty much what i did cost me 4000. that also include the massive amounts of head work and machining bill. and plus this is a good start for a turbo aplacation.

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zack240man
Posts: 184
Joined: Wed Oct 17, 2007 6:40 pm
Car: s13 hatch ka24det & s13 coupe sr20det

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no man you got it all wrong the intake gives you 58hp. that along will put u in the 10s

Shift_Kouki
Posts: 692
Joined: Mon Sep 11, 2006 2:34 am
Car: 95 Nissan 240SX SE

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Cheap rebuild would be SOHC pistons bored 1mm over, and 264 cams from crower or someone.

I'm normally in the minority thinking that NA KA power can be done... But even I look at the costs of getting there and think strongly about a single cam swap w/ some pushrods.

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NessDaONE
Posts: 56
Joined: Fri Apr 27, 2007 6:59 am
Car: 95 Nissan 240sx 5speed

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hmm you can try unorthodox light weight pulleys but as other ppl have mentioned before it is not really worth it. you will be paying too much for small results.

robbie2009
Posts: 99
Joined: Thu Nov 29, 2007 2:46 pm
Car: 1993 Nissan 240SX SE HB

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I'm thinking about saving up my money, and doing a rb25det swap. Not as hard as the rb26dett, and I found a couple for like $2600 with compression test and everything ran on them, with the transmission to. So I think I might go that route, because the sr looks to common in 240's and the vq is tooo much money.

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addisonblck
Posts: 710
Joined: Tue Dec 04, 2007 6:16 pm
Car: 93 se mods soon to come
Sc300 1jz swap laundry list of goodies
Location: Baton Rogue

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so would yall say the ka 's are a waste of time?or is there sum potential power in there?

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MoldyOldy240
Posts: 600
Joined: Thu Jun 08, 2006 3:51 pm
Car: 1991 240sx 295K w/ original engine.
Contact:

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I mean; if you have 5'g laying around you can make some NA power; but you won't pass a smog.

Now FI; these things kick @ss hard core; but that doesn't fall under cheap.

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krazydriver
Posts: 2443
Joined: Thu Feb 08, 2007 5:24 pm
Car: 2002 civic ex, 1993 KA-T 240sx - parting it out...

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For best results... apply boost. Turbo is easier then an NA build.A good turbo setup isn't cheap.As far as rebuild with 184k miles it's probably a good idea... i personally am going to try to run 7psi through a 187k block... but i'm ready to rebuild it if it blows. If it doesn't..

psi240
Posts: 54
Joined: Wed Dec 05, 2007 8:39 pm
Car: 1997 240sx

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robbie2009 wrote:I just got my 240sx se with the KA24DE. I already have a intake and exhaust system on it. What are some other cheap ways to make more power out of my NA Ka, any ideas? Like what would be the best cams to buy for it, and since it has 184K miles on it would it be advisable to fully rebuild the motor? Thanks!!! HAVE A NICE DAY
Remove CatRemove EGR / emissions stuffRemove butterfiesRun 2 DE exhaust cams.. thats about it.

robbie2009
Posts: 99
Joined: Thu Nov 29, 2007 2:46 pm
Car: 1993 Nissan 240SX SE HB

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krazydriver wrote:For best results... apply boost. Turbo is easier then an NA build.A good turbo setup isn't cheap.As far as rebuild with 184k miles it's probably a good idea... i personally am going to try to run 7psi through a 187k block... but i'm ready to rebuild it if it blows. If it doesn't..
Alright, I was looking around for good turbo parts for a custom setup. I found out the turbo exhaust manifolds can get expensive, like Peakboost makes $800 headers for a T3/T4 turbo. Would they be worth it though? Also what is a better all around turbo, like the T28 series or like a T3/T4 turbo? THANKS HAVE A NICE DAY!!!

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krazydriver
Posts: 2443
Joined: Thu Feb 08, 2007 5:24 pm
Car: 2002 civic ex, 1993 KA-T 240sx - parting it out...

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t3/t4 is gonna be better. the "standard" turbo for the ka is a t3/t04e .50 trim compressor .63 A/R

just make sure you know what all you need. ka-t.org has a great DOHC turbo for dummies thread, pretty much outlines what parts you'll need for what power level.

as far as manifold... cast and logs manifolds are pretty durable, equal length are slightly better performance wise but obviously cost alot more.

Just make sure the manifold you get fits well with the turbo you'll be getting.I got myself a cast one, but then got a slightly larger turbo then i'd originally planned... now i'm not sure if it's gonna fit.

WWJD

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MoldyOldy240 wrote:Or you can try out the 2.65 stroker kit lol I'd love to see what that does
Why in the world would you wanna do that? the stroke is big enough which is what makes the KA "weak" to most people.

Tune is the most effective thing you could get for your motor no matter the miles. befor you throw money at parts, SEA FOAM your car, do a full tune up, oil change. then go from there. make it lighter.

You dont need tons of money to make these car make FUN power. There's guys that could keep up with sr. Bigvinne, if you ever catch him on here he'll tell you.

The Ka is good, I think what happens is that people dont take the time to learn about the motor and just want the easy way out. Chumps

If you were to build a motor you would lean more and enjoy you ride. Have fun

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Nismo240driver
Posts: 21
Joined: Sun Sep 30, 2007 5:01 pm
Car: 93 S13

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deff rebuild motor....weight reduction.....turbo....? haha the list goes on and on....KAs can crank the power if you know what your doing! look at some KA to KA-T threads to get an idea of what you wanna do or if u want to do it.......just dont buy cheap ebay turbos please! and if u got money for the rb25 swap.....well they sit around forever and might have good compression but will need alot of stuff replaced..and parts are expensive...costly mistake if your on a budget.....build the KA!

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dnlx5
Posts: 154
Joined: Thu Aug 23, 2007 6:27 pm
Car: 91 240sx s13 hatch 5speed sr20de (crashed but still driving)

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http://www.youtube.com/watch?v=AEmlmJXFEos i love na power but i dont think the ka is a great na motor its kinda old and doesent rev very well personally i wana do an sr build sr22ve anyone? s2k beater but ya on the ka first get it running perfect (rebuild if you need it) a couple extra degreese of ignition timing advance helps response 2ndary buterfly mod a little port matching (not porting unless u wana spend lots of time but there 2 diff things) get electric fans redline or royal purple oil if you can afford it run premium cus u advanced the timing dual exhaust cam mod and single cam pistons if u can afford them then after all that get a new tune and i think that puts you around 200 hp and prolly 210-220 ftlbs (at the crank)

southparklocos
Posts: 22
Joined: Sat Jun 09, 2007 4:35 pm
Car: 1990 240sx

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where u that lip?it's nice

southparklocos
Posts: 22
Joined: Sat Jun 09, 2007 4:35 pm
Car: 1990 240sx

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where u get that lip?

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s13 drifta
Posts: 672
Joined: Tue Aug 01, 2006 8:00 pm
Car: s13, s14, and ae86
Location: Gardnerville, NV

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I personaly like na kas because of the great amount of torque and throttle response you can get out of them and still be reliable. 200 chp is easy to acheive with bolt ons and a tune. My goal for my new project is 200whp and I know I can do it. NA for the win.

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mistaremy
Posts: 27
Joined: Sat Nov 03, 2007 6:59 pm
Car: 1991 240 sx

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or boost (hey u already mentioned re-build)me? i still dont know I got 265 or more ("broken" ODO) I want ti rebuild or swap an RB- no replacement for ________? thats rite

robbie2009
Posts: 99
Joined: Thu Nov 29, 2007 2:46 pm
Car: 1993 Nissan 240SX SE HB

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I found a good set of equal length top mount T3/T4 turbo exhaust manifold. Link: http://www.frsport.com/Megan-R....htmlI figured that I could have somebody else go over the welds since they are still only $180.

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brandonDavid
Posts: 970
Joined: Thu Jan 18, 2007 12:10 pm
Car: 1992 240sx, 1992 D21

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MoldyOldy240 wrote:one of the rice o matic mags just did a NA KA article

it went something like this

intake gives you + 1 HP +1 TRQHeaders gave + 6 HP +4 TRQExhaust gave + 16 HP +10 TRQ

Something like that; pls correct me if I am wrong as I don't have the article with me.

Or you can try out the 2.65 stroker kit lol I'd love to see what that does


yeah, pretty sure it was import tuner.

final numbers were like 129whp and 135wtq.

header, intake, and exhaust.

dunno if it was a a/t or m/t. pretty sure auto. or else that's way too much power lost in the drivetrain.

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Razi
Posts: 28373
Joined: Sun Dec 31, 2006 9:52 am
Car: Moo

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Yeah but on the slight gain of horsepower, how much torque do you lose?


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