have some questions before buying me a 240sx

[ka24det 240sx]

well long story short, ive asked around in the other forums and got 1 reply, hoping i will pick up more info from this forum

but here some questions that i have before buying the car

1. the car has 200k milage, now i asume the 91+ have the ka24de, and not the ka24e, but do these motors take milage well? or is this motor about to give out?

2. Also my plans are to turbo the ka24de, i only wana push out 250hp out of the stock internals, is that doable with reliablyility?

3. Its also a automatic, are these trannys any good?

4.do you think just swapping over a rb25 would be easier and maby cheaper than rebulding the stock motor with forged internals+ the turbo kit?

5.just as an estimate, do you know the price (average cost) for a rb25 swap?

6. and for the rebuilt ka24de with internals? (pistons and rods, no crank)

7. is the rb swap hard to do? or is it something i can do myself with the right knowledge and tools?

8.what is needed to perform a rb25 swap? (all parts)

9.rebuilding the ka24de, what exactly would i need to rebuild? (motor wise, not including fuel pump, injectors, ect.)
i know for a fact i will be doing the following

-forged pistons and rods
-arp hardware all around
-make sure everything else on the motor is in working condition

-(what else should be replaced to get it ready for some boost?)

also il be running a holset turbo for this build, maby a hx40

10.now is the stock crank able to hold 400+ hp? that is what i plan to go in the future, wana make it hit 10s (10.9 at least)

11.also i was wondering, if i got a regular 240sx exhaust will it hook up to the downpipe from a turbo kit? or will i need a different exhaust for it to work? Also if i got cams for it, will they be effective with the turbo set up? or do i have to get cams that are specific for a turbo set up.
the reason i ask this is because i would like to start modding the car, and the mods that i do to it, i would like to still use for the turbo set up
let me know if this will be possible, also wat other parts (motor wise) can i do to the car and stil keep when its turbo?

thanks

you dont have to answer all the questions, just the ones you know, but if you can go ahead =D

if anyone can help me out id appreciate it

thanks

[Rev_D21]

Moving to 240 General.

[tm1218]

buy a stock 240 and keep it stock for a while. give yourself time to learn all of the basics when it comes to 240s before you start modding. while asking questions and getting answers does gain you knowledge, it still doesn't teach you half of it. experience is the best learning method, do not rush into things. you will catch on quickly and you will know when you are ready to do certain types of modding when the time comes.

buy a stock 240 and take it from there... slowly.

[Khost26]

So are you trying to get 250hp AND run a 10.9? Or is the 10.9 a future project? I think people will keep saying you need to search and find your own data but ill do my best to try and answer some of your questions.

1. If you are rebuilding the mileage doesn't really matter but the ka is somewhat known for spinning bearings. I guess it all goes down to how its been treated its life.

2.Yes with a rebuild.

3.No

5.My friends total was a little over 5k.

7. If you only want it because its a skyline motor id stay away from it and its probably to big of a project.

11. You would just need a downpipe. Yes the cams would be effective.


Hope this helps a little.

[ka24det 240sx]

yes its definitely helpful, as for the 10.9 is the plans for the future, but ye i would of like to run 230-250 hp on stock internals.
i was wana give the car some "umph" for the meanwhile, till i save for the forged internals and new turbo

and the reason i wanted the rb25 is not because its a skyline motor, just because its a amazing motor in general

ye i know about cars, specifically dsm's, but i just dont know much about 240's

i had also had thoughts of swaping over a ls1, or lt1,but i dont think i wana get my self into something i dont know much about

but here are my plans, let me know if i should or should not go with this path.

-first things first, maintenance. Do and replace anything needed to get the car running nicely
-simple bolt ons, exhaust , intake, maby cams, rly want 272, 272. basicly im gona buy mods that i can keep when i get my turbo set up.
-then after everything is running nicely, il go ahead and get the turbo set up
(il be going with a ebay turbo kit, i know that they are a POS, but the truth is the piping on them are quite nice, nice solid welds,so theyll hold up. As for the turbo i know its gona be crap, but sometimes the hold up quite well. so basiclly the piping is all i will be using from the kit as for the intercooler. So that kit is gona be used to get me at around 230 hp. not much but at least something to work with)
-in the meantime i will be raising money to buy the forged internals for the rebuild (and everything else needed, gaskets, bolts and studs) ,new turbo (holset hx35 or 40), and external wastegate, and Bov.
-then wen i get all the parts ill be able to put it all together and be able to push out some nice numbers




thanks guys for the answers =D

[SoCal-S13]

1. i own two S13's both have KA24DE and both are over 210,000 miles. Never had 1 break down or problems. Regular maintenance will keep them alive forever.

2. Boosting a motor with high mileage is frowned upon. It's like giving coke to an 80 year old. They're gonna die. If you get it rebuilt to oem specs, then boosting on stock internals is ok. You should probably shoot for a T28 and run 7-10lbs. That should put you somewhere in the 250hp range, and is still practical for dd.

3. Automatic trans is not in my vocabulary. do a 5spd swap. Im actually selling one. Complete. Pedals, harness, trans mount, speed sensor, yadda yadda.

4. No. if your gonna dd it keep the KA. I dont have any experience with the RB, but it just doesnt seem practical.

5. The work involved and the overall price of the swap is rediculous. You have to get the harness, new trans, new ecu, in some cases remove power steering or a/c, driveshaft, if im not mistake a new rear end as well, axles, motor mounts, exhaust....once again just not practical. awesome. but not practical. As for the cost, take the price of the motor and multiply it by two. Thats about how much it will cost to have someone swap it for you. If you bargain shop and do your own work you can do it for a lot less.

6. You can buy a rebuilt KA (zero miles and oem spec) for $1000. That price is from a legit shop who sells, you can again find it for cheaper if you bargain shop but the $1000 gets you a warranty as well. You also wont have to swap harnesses, ecu, exhaust, driveshaft......you get the point. very practical.

7 & 8. Wouldnt know, but a motor is a motor. FYI that block basically touches the firewall and the radiator support. Its very long. As for what is needed..... Heres a pic i took at a show of a guy with the swap. Notice how everything under the hood is different than yours. You gotta buy all that plus a s*** more. There are write ups on RB swaps. Check them out for a more detailed list.



9 & 10. Depends, a "rebuilt" KA would be all new stock internals. When you upgrade to forged internals it is a "built" KA. You can also get some aftermarket cams (BC is popular), Bore the cylinders, Arais makes some nice pistons, valve springs and lifters. An aluminum radiator would be a plus to prep for boost. And a stock crank....400hp....no. Forged crank will.

11. Im pretty sure the downpipe will be in the same place as the oem one, i dont have turbo's so you should probably do more research. There are no turbo specific cams (to my knowledge) and when you change out cams, fuel consumption, add boost.... your gonna need a nice ecu to manage these changes. And there really arent any mods that will not allow turbo's. Just realize the more boost, power, upgrades you do the less reliable it becomes in a dd point of view. a 10 sec dd is not practical.


basically you need to pick between a dd and a 10 sec car. they are very different. some upgrades wont be necessary if its going to be a daily driver. you can use a small turbo for dd, but for 400hp your gonna need a real turbo. if you do it that way you just spent like $4000 on two diff turbo setups. thats too much. find out what you really want and do that.

[ka24det 240sx]

ye i definitly see what ur talking about, but ye its gona be a dd, as for the 10s, its gona be a long ways from now preety much like my dream lol, im gona do everything accordingly, preety sure with 230-250 hp it will take me into the mid to low 14s, then i would aim for 13s, then 12s, then 11s, and finally 10s (im starting to doubt it, but who knows lol).

but more realsiticly my reachable goal is going for 11's to low 12s . That would be a really fun dd =D

so what im focusing on, would be the 350-400hp range. but its gona be a while before i even get it turboed. so ill be N/a for a while

is there a certain upgrade path you would recomend? or something in that manner?

as for the bc cams , im not sure how they work for 240sx, but many people in the dsm's world dislike em, they usually go with comp, hks, or kelford lol.

but will it be possble to have 272, 272s in a stock ka24de without needing a tune? because for dsms, at about 280 you would need a tune, and sometimes even springs and retainers to make them run at full potentional

lmk

thanks

[AZ89two4Tsx]

All my answers are in bold/italics.

1. the car has 200k milage, now i asume the 91+ have the ka24de, and not the ka24e, but do these motors take milage well? or is this motor about to give out?
That's about when things start to tire out. Expect to need a rebuild sometime in the near future. 200K is a lot for most cars.

2. Also my plans are to turbo the ka24de, i only wana push out 250hp out of the stock internals, is that doable with reliablyility?
Not with a 200K mile motor. If it's coming off a fresh rebuild, these motors can easily push that, reliably.

3. Its also a automatic, are these trannys any good?
Not really at all. There is really only a few guys around with automatic KA-T motors.

4.do you think just swapping over a rb25 would be easier and maby cheaper than rebulding the stock motor with forged internals+ the turbo kit?
No. Quite a bit of modification is needed for an RB25 to fit. It will be close to the same price, maybe cheaper by less than a grand

5.just as an estimate, do you know the price (average cost) for a rb25 swap?
Expect to spend around 3K-5K for a proper swap, not even rebuilding the motor you get.

6. and for the rebuilt ka24de with internals? (pistons and rods, no crank)
Probably around $1500 in parts, depending on what you get. Add in the machine shop costs and you'll probably be a little under 3K doing it right, no turbo parts.

7. is the rb swap hard to do? or is it something i can do myself with the right knowledge and tools?

Click here: what-is-needed-to-swap-a-rb-into-a-240s ... 85294.html

8.what is needed to perform a rb25 swap? (all parts)
what-is-needed-to-swap-a-rb-into-a-240s ... 85294.html

9.rebuilding the ka24de, what exactly would i need to rebuild? (motor wise, not including fuel pump, injectors, ect.)
i know for a fact i will be doing the following

-forged pistons and rods
-arp hardware all around
-make sure everything else on the motor is in working condition

-(what else should be replaced to get it ready for some boost?)
Depends on how you want your power. You can achieve it by just cranking up the boost or have little bits here and there like intake manifolds, head work, E85 tuning, etc...... That's all your call.


10.now is the stock crank able to hold 400+ hp? that is what i plan to go in the future, wana make it hit 10s (10.9 at least)
Yes.

11.also i was wondering, if i got a regular 240sx exhaust will it hook up to the downpipe from a turbo kit? or will i need a different exhaust for it to work?
For KA-T, you'll need a custom downpipe. For an RB/SR, it should bolt up fine.

Also if i got cams for it, will they be effective with the turbo set up? or do i have to get cams that are specific for a turbo set up.
the reason i ask this is because i would like to start modding the car, and the mods that i do to it, i would like to still use for the turbo set up.
That will depend on how you want your powerband, how much power you're making etc.... You're gonna have to research that on your own.


let me know if this will be possible, also wat other parts (motor wise) can i do to the car and stil keep when its turbo?
That question is too vague and needs to be more specific.

Read up. Here is two links; KA forum, KA-T forum, and RB forum. Hope that helps.

ka24e-ka24de-forum.html

ka24et-ka24det-forum.html

rb20-rb25-rb26-forum.html

[SoCal-S13]

ye i definitly see what ur talking about, but ye its gona be a dd, as for the 10s, its gona be a long ways from now preety much like my dream lol, im gona do everything accordingly, preety sure with 230-250 hp it will take me into the mid to low 14s, then i would aim for 13s, then 12s, then 11s, and finally 10s (im starting to doubt it, but who knows lol).

but more realsiticly my reachable goal is going for 11's to low 12s . That would be a really fun dd =D

so what im focusing on, would be the 350-400hp range. but its gona be a while before i even get it turboed. so ill be N/a for a while

is there a certain upgrade path you would recomend? or something in that manner?

as for the bc cams , im not sure how they work for 240sx, but many people in the dsm's world dislike em, they usually go with comp, hks, or kelford lol.

but will it be possble to have 272, 272s in a stock ka24de without needing a tune? because for dsms, at about 280 you would need a tune, and sometimes even springs and retainers to make them run at full potentional

lmk

thanks

well we've pretty much got the same goal, i want 300 whp. not crazy, but def enough to have fun. my plan for now is to upgrade to forged internals, bore .020 over, arais pistons, and get some nice lopy cams, try to find an ITB for a KA thats not custom made and costs $400, 255 fuel pump, bigger injectors (not sure what size yet), just basically prep the motor for boost. im gonna run it n/a for a while. Id estimate a solid 220+hp with no turbo. aaaaaaaand when the time comes run a T28 at like 7psi. that'll put me in the ballpark of 300. i may go T3/T4 but whats the point unless im tryin to push 15+psi.

as for all these tuning questions and stuff like that. nooooooo idea. i cant really reccomend any specific parts because ive never personally used them. ive got some friends that have a lot of the stuff i mentioned and they seem pleased.

[AZ89two4Tsx]

im gonna run it n/a for a while. Id estimate a solid 220+hp with no turbo.

I hope you're joking. There's no way in hell you'll get even close to 220HP with a full N/A setup, let alone breaking 200HP. Yeah, it'll feel like a completely different car, but those numbers are absolutely unrealistic.

And there's plenty of reasons for running a T2 sized turbo. A disco potato (GT28RS) can lay down 300+ numbers all day long, reliably. Much quicker spool up than a T3/T4.

Don't misinform this guy.

[ka24det 240sx]

lol ye i knew 220+ hp on all motor was unrealistic, i just didnt wana say anything lol

also 1 of you guys said the stock crank on the ka24de is good enough for around 350-400 hp, and one of you said no

which one is it gona be? lol

also will i need springs and retainers a pair of 272, 272's at around 350-400 hp?
or will the stock ones hold up fine?

other than that i think u guys preety muched answered all my questions =D

thanks alot!

[AZ89two4Tsx]

I have NEVER heard of anyone breaking a KA crank. Many guys over here run way over that on the stock crank. Check it out. Great forum.

http://ka-t.org/

Also, talk to WDRacing on here. He is the NICO master of KA-T on here. He's always a big help and knows what he's doing.

[Crazyirish]

As far as the stock crank goes, there's really no other good choice.

You could get a custom crank made, but I bet that would probably be in the 2 to 3 grand range for a custom, one off piece. Then theres the BC Stroker crank. Which needs BC Custom rods and pistons. And strokes an engine that doesn't need anymore stroke.

Stick with the stock crank. It has proven reliable in plenty of high horsepower (600+) builds.

[hbpignosePA]

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[DamonDread]

annnnd more gibberish that could have been answered by simply searching