Turbo, 6-speed, and valve-train? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

chinderer · 11-28-2001, 05:39 PM

Three ?'s here; 1)  What turbo in the three available kits(F-max, XS-Engineering, and NSport) for the KA24DE (96') can support the highest boost, how high is it, and how much horsepower is it?
2)  Can you mount a 6-speed S15 tranny to the KA24DE and what would be needed if so?
and 3)  Do any companies make valve-train components for the KA like heavier valve-spring, tappets, and/or valves?  Can any other engines valvetrains be substituted (like the SR or other nissan)?
Any info will be greatly appreciated.

chinderer · 12-07-2001, 10:43 PM

Come on guys!!!

jay · 12-07-2001, 11:29 PM

Do a search for turbo ka or ka24det. My advice along with some others would be just to go for the SR swap. It can take higher boost on stock internals and usually will be cheaper in the long run when compared to a turbo ka.

jay · 12-07-2001, 11:31 PM

As for the tranny, it should bolt right up since they swap 5 speeds in Japan for the six speeds. But an sr  6 could run you around 1500. You would be better off getting an S15 SR20DET.

MingMing · 12-08-2001, 12:17 AM

btw, try getting a kit that's actually good value (ie cheap and quality)
dont go for the highest boost, as the de's internals are somewhat weak anyway, and if u run too much boost u'll ahfta get a whole new engine
so runnign adequate boost while not blowing ur whole powerplant mite be more worth it

misnomer · 12-08-2001, 12:54 AM

The turbo isn't the big problem in turning up the boost, it's the car's internals. You don't want to push a KA past ~7psi without rebuilding the engine. As far as those turbo kits go, I'm researching much of the same. Each have advantages and dissadvantages. The XS and Nsport have hugeass turbos, but the FMAX is the only one with a JWT ECU. You gotta read the #### out of it to get to what really matters: What will work best for your car and price range?

PSI240SX · 12-08-2001, 07:40 PM

You can run more than 7psi on stock internals, trust me, I did it for over a year at 10psi. No a 6 speed SR tranny will not bolt up to a KA. And as for valve components, dont bother wasting your money, the stock ones will be fine. Duy was dynoing 550 to the wheels on stock head, I have a completely stock head as well and my car is somewhere over 300hp. You wont rev the KA past 7K without dumping about $3000 for a custom billet crank, on top of the money for the rebuild, and head work. And as far as your first question about which turbo can support the most boost, I think they are all full T4's right? Should support up to 25-30psi no problem.

mistert · 12-08-2001, 08:14 PM

i wouldnt bother with getting a kit with that big a turbo unless you plan on pretty much replacing and rebuilding everything, because i'd rather save money and have maximum streetability if im not going to use 25-30psi. although a ka24det is cool, its much cheaper in the long run for what you get from an SR swap...you can get an SR front clip for less than what you'd buy a decent turbo kit for without install. and on the subject of mass stock boost, the s13 ka will take ~7-8 psi, while the s14 will take ~9-10 psi.

i dunno...you'll get more aftermarket support for the SR in the end than you will for the KA when you need high quality parts for a turbocharged engine. and you can push 400 on completely stock internals on an s13 or s14 engine. by the time you spend enough money to make this on a KA, you could be way past this mark on the SR. its not only more performance potential, it's price/performance

*ca18guy* · 12-09-2001, 05:11 AM

If you have a low milage KA then turbo it. There is no replacement for displacement <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>  KA and SR parts are not interchangable, nuff said on that question. Anyway back to the KA, it is just as/if not more capable then the SR in getting power out of it. You should'nt ask which turbo supports the highest boost, you should ask what turbo flows the most air. I think most kits come with a T3/T4 hybrid, that should be more then enough turbo for you to work with

11-28-2001, 05:39 PM	#1
chinderer Leaky Injector Join Date: Jul 2001 Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	Three ?'s here; 1)  What turbo in the three available kits(F-max, XS-Engineering, and NSport) for the KA24DE (96') can support the highest boost, how high is it, and how much horsepower is it? 2)  Can you mount a 6-speed S15 tranny to the KA24DE and what would be needed if so? and 3)  Do any companies make valve-train components for the KA like heavier valve-spring, tappets, and/or valves?  Can any other engines valvetrains be substituted (like the SR or other nissan)? Any info will be greatly appreciated.

12-07-2001, 10:43 PM	#2
chinderer Leaky Injector Join Date: Jul 2001 Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	Come on guys!!!

12-07-2001, 11:29 PM	#3
jay Zilvia Member Join Date: Nov 2001 Posts: 205 Trader Rating: (0) Feedback Score: 0 reviews	Do a search for turbo ka or ka24det. My advice along with some others would be just to go for the SR swap. It can take higher boost on stock internals and usually will be cheaper in the long run when compared to a turbo ka.

12-07-2001, 11:31 PM	#4
jay Zilvia Member Join Date: Nov 2001 Posts: 205 Trader Rating: (0) Feedback Score: 0 reviews	As for the tranny, it should bolt right up since they swap 5 speeds in Japan for the six speeds. But an sr  6 could run you around 1500. You would be better off getting an S15 SR20DET.

12-08-2001, 12:17 AM	#5
MingMing Zilvia Member Join Date: Sep 2001 Posts: 174 Trader Rating: (0) Feedback Score: 0 reviews	btw, try getting a kit that's actually good value (ie cheap and quality) dont go for the highest boost, as the de's internals are somewhat weak anyway, and if u run too much boost u'll ahfta get a whole new engine so runnign adequate boost while not blowing ur whole powerplant mite be more worth it

12-08-2001, 12:54 AM	#6
misnomer Nissanaholic! Join Date: Jul 2001 Location: Nevada Posts: 2,293 Trader Rating: (0) Feedback Score: 0 reviews	The turbo isn't the big problem in turning up the boost, it's the car's internals. You don't want to push a KA past ~7psi without rebuilding the engine. As far as those turbo kits go, I'm researching much of the same. Each have advantages and dissadvantages. The XS and Nsport have hugeass turbos, but the FMAX is the only one with a JWT ECU. You gotta read the #### out of it to get to what really matters: What will work best for your car and price range?

12-08-2001, 07:40 PM	#7
PSI240SX Zilvia Addict Join Date: Jul 2001 Location: The Gunshine State Age: 50 Posts: 843 Trader Rating: (0) Feedback Score: 0 reviews	You can run more than 7psi on stock internals, trust me, I did it for over a year at 10psi. No a 6 speed SR tranny will not bolt up to a KA. And as for valve components, dont bother wasting your money, the stock ones will be fine. Duy was dynoing 550 to the wheels on stock head, I have a completely stock head as well and my car is somewhere over 300hp. You wont rev the KA past 7K without dumping about $3000 for a custom billet crank, on top of the money for the rebuild, and head work. And as far as your first question about which turbo can support the most boost, I think they are all full T4's right? Should support up to 25-30psi no problem.

12-08-2001, 08:14 PM	#8
mistert Pearl White Mike Join Date: Oct 2001 Location: memphis TN Posts: 908 Trader Rating: (0) Feedback Score: 0 reviews	i wouldnt bother with getting a kit with that big a turbo unless you plan on pretty much replacing and rebuilding everything, because i'd rather save money and have maximum streetability if im not going to use 25-30psi. although a ka24det is cool, its much cheaper in the long run for what you get from an SR swap...you can get an SR front clip for less than what you'd buy a decent turbo kit for without install. and on the subject of mass stock boost, the s13 ka will take ~7-8 psi, while the s14 will take ~9-10 psi. i dunno...you'll get more aftermarket support for the SR in the end than you will for the KA when you need high quality parts for a turbocharged engine. and you can push 400 on completely stock internals on an s13 or s14 engine. by the time you spend enough money to make this on a KA, you could be way past this mark on the SR. its not only more performance potential, it's price/performance

12-09-2001, 05:11 AM	#9
ca18guy Premium Member Join Date: Jul 2001 Location: Clearwater FL Age: 42 Posts: 3,226 Trader Rating: (0) Rides Gallery: ca18guy Feedback Score: 0 reviews	If you have a low milage KA then turbo it. There is no replacement for displacement <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>  KA and SR parts are not interchangable, nuff said on that question. Anyway back to the KA, it is just as/if not more capable then the SR in getting power out of it. You should'nt ask which turbo supports the highest boost, you should ask what turbo flows the most air. I think most kits come with a T3/T4 hybrid, that should be more then enough turbo for you to work with