KA24DET or SR20DET best choice for car

510Mods · Feb 21st, 2005, 10:33 PM

I am researching to find the best motor swap. I am trying to stick with 4 bangers only. I want to get the best motor for the turbo setup. I dont think I'll be revving past 6k rpm. It would be nice to go to 8K, but really not needed. I need a good hp and torque range. I can start with non turbo blocks and work in my own turbo systems and EFI control, not a problem. What would be a good motor to get atleast 250-300 hp/trq from and still be reliable? It will be connected to a 5 speed.

asleepz · Feb 22nd, 2005, 09:24 AM

The SR and KA are both good choices. The KA would have more torque after the boost because of the larger displacement but the SR would be cheaper to get to 250 to 300HP.

510Mods · Feb 22nd, 2005, 03:06 PM

Is the performance parts cheaper for the the SR20DE? I would be designing my own intake and EFI system, also my own exhaust for the turbo config. So I can tune those for anything. But as far as component reliability, would the stock components on the ka or sr be able to handle it? What compnents would be cheaper? Thanks for any help.
Chris

asleepz · Feb 22nd, 2005, 03:53 PM

I think the internals for the KA are 300HP someone correct me if I'm wrong.

James · Feb 22nd, 2005, 03:54 PM

www.ka-t.org

there's some KA's running more than 300hp.

on another forum I saw that the stock KA rod bent finally at like 500hp something...

510Mods · Feb 22nd, 2005, 04:49 PM

If I can stick with stock internals and hit 300hp while using for a daily, that is my goal. As long as it doesn't make it a 30 second winner, then rebuild time is here. I know the big 4's have balance issues and cant reach the highest rpm. If I were to get a KA24DE and a SR20DE and install my turbo/injector system. Upgrade them side by side and reach 300hp. Which would be the best way for a daily?

asleepz · Feb 22nd, 2005, 05:38 PM

The KA would definately have more torque.

510Mods · Feb 22nd, 2005, 06:18 PM

I wouldn't spin it past 6k very much, maybe just to tap it that high for the shift points. But I need to dyno it to do that calculation first. Thats what I was thinking, definitely go for the KA24DE then. I love small motors that can rev and deliver tons of torque, that probably why my Ford has a 5.0 in it, and not a big block. Thats great if the stock bottom end of a KA can handle 300-500hp, then my only concern is the top end. I would need to get new uprated cams for sure and a port/polish on the head. Anything else I should be considering? I have a 280Z 5 speed in my 510 with the L20B. How would I need to adapt the KA24 to fit that tranny or what tranny/bell shall I use?

Chillboy · Feb 23rd, 2005, 10:38 AM

http://www.phatka-t.com/

Here's a link to some KA specialists. They are getting 500whp off a built KA.
I don't know the shop, just stumbled on the link, but worth a look.

510Mods · Feb 23rd, 2005, 11:04 AM

Thank for the site. Does anybody have any info on a KA24DE turbo on the specs of the hp and torque. I have stuff for the SR20DET, but nothing on the KA24DE with added turbo.

alexinpg · Feb 23rd, 2005, 11:18 AM

www.ka-t.org is your friend for these questions. Tons of answers for almost every set up you could possibly imagine.

510Mods · Feb 23rd, 2005, 12:44 PM

Looking it over a bit, KA24DET with no heavy mods puts about 210-230rwHP with 8psi. Thats not too bad at all. They say they have an engine running at 560rwHP with stock components, but has an engine management system and highly tuned EFI. Thats freekin nuts. I thought my L20B was kicking ass at 130hp. Also I thought my 5.0 with 300hp was cool. The potential is amazing.

inertial drift · Feb 26th, 2005, 03:46 PM

the KA engine is a one of the Nissan truck. basically it's a truck engine. back then japan were debating either to drop the SR or KA. but it was unpopular back then to have turbos or anything. so then they decided to drop the KA engine as a stock. (correct me if i'm wrong, i read it off the net. it was a japanese article translated to english which was quite interesting) and i think KA performance parts are cheaper than the SR. KA has more torque than the SR. but i will go SR.

510Mods · Feb 26th, 2005, 04:52 PM

What would make you go SR? If you can get more hp and torque at a cheaper cost, what more reason to go for the KA. I'm trying to justify the SR/KA fight is all, hehe. I'd sacrifice top end hp for low-mid torque anyday. Thats the stuff that holds your @ss to the seat. Have you ever been in a car where you floor the thing, and try to touch the dash but you cant? I have, and that's all torque

inertial drift · Feb 27th, 2005, 01:28 AM

for what i do i dont need that much torque.

i'm a autocross guy and rally type. it's all about time attack. =)