to build or swap

Information on the naturally-aspirated KA24E and KA24DE engines.
blks13
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i know every one is going to tell me to swap but i dont wont to be like every one else i wont to build a kick azz al motor ka i found a head package from gude and was told it will put down 50 horsees to the ground on stock bottom end with just replacing the rings and crank bearings (becouse of millage) found a good deal on hot shot header can any one point me in the direction i need to get all the goodies i need any help will be great!!! THNKS BLKS13:ylsuper :confused:


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Asleep Altima
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gude does not have a good rep as stated in the other thread. theres LOTS of performance parts for you out there. you just need to search a little.

blks13
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I HAVE BEEN LOOKING FOR THREE MONTHS FOR INTERNALS I FOUND SOME STUFF BUT NOT TO MUCH IM PARKING THE CAR IN TWO MONTHS AND GETTING TO BUSINESS ( I LIVE IN THE NORTH EAST PA AND IM NOT DRIVING IT ANOTHER WINTER ) IF ANY ONE KNOWS WHERE I CAN FIND THE PARTS I NEED LET ME KNOW ASAP

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iwantanr34
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RiceNWater
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Rebello Racing does good Nissan heads.Nissan Motorsports carry a lot of NA parts.

:: orion ::
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The stock KA head is not so bad that you can unlock 50rwhp with just port/polish/valves - No way.

Maybe you'd see those gains if you had and otherwise buit motor - All the bolt-ons, ECU, high compression, cams, etc...

But not on a stock bottom end.

Hell, no one's broken the 180rwhp mark on a street driven KA AFAIK...

Later - Brian

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Asleep Altima
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shawn over at .net has over 200 horses in his ka. its all motor and he ran a 13.9 with his altima... might want to check that out.

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Checkered-Member
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Try these two stores: http://www.racetep.com/240sxna.htmlandh ... ka24de.com

50 whp from a head job, can only be achieved on large V-8's so on a large I-4 (like the KA) expect no more then 20

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Asleep Altima
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hey checkered, unless that tb in your sig is aftermarket, how are you getting that its 65mm? and how rich are you running now that your maf is "chipped"?

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Checkered-Member
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Asleep Altima wrote:hey checkered, unless that tb in your sig is aftermarket, how are you getting that its 65mm? and how rich are you running now that your maf is "chipped"?
This is noting to do with this thread, so stop hijacking.But to answer your questions:It’s an aftermarket TB, I’m not running crazy rich, I still get 20.2 mpg

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Asleep Altima
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let me worry about the thread jacking, where did you get it? maybe youre mistaking me for flaming you, but id like to have a bigger tb for my application plans. and 20.2 is horrible.

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deviousKA
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Modified by deviousKA at 5:16 AM 9/17/2005

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Asleep Altima
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how much are you able to bore over in a ka24e? i wish we could go that much in a de. i think 91 would be pushing it pretty hard, those walls are thin as it is.

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deviousKA
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yes the walls are somewhat thin on kae and de to begin with. 91.1mm is ~.080" over. This can only be done on naturally aspirated engines using the proper octane fuel to avoid detonation. I have 2 running in cars including mine and have had no problems whatso ever. I know of another ka24e running a 91mm bore that has been doing so for over 7 years. The extra 100cc gain is a side effect, as the only reason to go with 91mm pistons is price and availablity to gain higher compression.

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I am Technoman
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What’s that joke about buying an SR?One mans trash is another mans treasure!

Sorry I just needed to make a post!:D

texsilvia
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Joined: Sat Oct 18, 2003 9:04 am

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To swap or build...

Look at spending ~$3000 or so to get a properly built KA24DE capable of putting 200 ponies on the ground. At that level, an N/A KA24DE is just about at the limit of drivability. Turbocharge it and add about 2k to the price.

-OR-

Spend about the same $3000 and get an SR20DET, or maybe even an RB20DET or RB25DET. Put the same 200 out to the rear wheels and have plenty of room to upgrade. Spend an additional 2k on an SR20DET or RB2XDET and you'll have 300 or more rwhp all day long.

texsilvia
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-addendum-

I wouldn't mess with a KA24E unless I had some weird loyalty to that specific motor. I'm not even a real big of the DOHC version.

Go with a turbo motor swap.

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Asleep Altima
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again, the common overlooking of the potential of the ka. so much power potential there about to be lost again.

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s13ofdoom
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ka has displacement but for $$$$$. If u do a swap (front clip) u get alot for 2k and after a grand is spent ur gonna be pretty quick!! But if u got a good trans and gonna rebuild your Ka more power too you. there's nothing like a strong N.A.

texsilvia
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Potential, yes...

But serious $$ to exploit it. It was designed as a truck engine, long stroke, long intake runners, low end torgue.

If you have deep pockets, by all means, make the fastest N/A KA car around, but...then again...why mess with it if you have THAT much money.

Leave the KA's to the truck guys.

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Asleep Altima
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ka's not a truck engine. we had this debate not too long ago. its a car engine, it started that way and im not going to go and prove it again. as far as a 240 goes, you guys have it "easy" so to speak. a sr swap is tons easier for you, but for an altima like mine, the cost of a sr swap would be more than it would be to turbo my altima and i would still come out on top.

texsilvia
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I'm as far from being knowledgeable about Altimas as one can be, but I thought the Altima and the Bluebird were the same car.

Is it really THAT difficult to do the FWD SR20DET swap into an Altima using the Bluebird clip?

I could be wrong, perhaps the Bluebird and the Sentra / G20 are the same.

If the KA is your thing, then by all means, mod and enjoy. But if you have the opportunity to move to something that is turbocharged, for about the same amount of money, then why not make the change?

The plain fact is, for a 240 anyway, building a KA24 just isn't economical versus the other options available.

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Asleep Altima
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thats why i said for an altima, you should stay ka. the g20 is more like the sentra, not the altima. the bluebird is like the altima, but for some reason, its still not that easy to swap into an altima. by the time you spend the money on getting a stock sr20det to fit in the altima, you could easily turbocharge the ka and make the same if not more power. the sr is smaller, why lose the .4 liters of displacement? better for 240's, too expensive for an altima.

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Asleep Altima
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texsilvia wrote:
If the KA is your thing, then by all means, mod and enjoy. But if you have the opportunity to move to something that is turbocharged, for about the same amount of money, then why not make the change?

The plain fact is, for a 240 anyway, building a KA24 just isn't economical versus the other options available.
i met this dude a couple weekends ago that was kind enough to let our mag staff crawl over his car. hes running a ka based 95-96 240 with a good sized turbo putting out 333 rwhp. been that way for 50k miles now... stock internals. ka's arent buildable only cuz people THINK they arent buildable. its all about engine management and doing things right. i wish people would be more open minded.


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