Question?!!?

[implict]

Is the motor in a 89 240sx a ka??? or??? just woundering... ANDIm just about to get the sr20det..... can somepoeple give me some tips on how to make it a beast???? ( i get it on christmas break ) !!!!!!!! :help

[SlowFiveOh]

The engine in every 240 sold new in the U.S. came with a KA. The 89-90 had the SOHC KA24E. 91 and up came with the DOHC KA24DE.

[implict]

ya the 90's are 16valve and twin cam also..... mine is 12 oh well im gettn the sr20det soon :ylsuper

[Night]

ya the 90's are 16valve and twin cam also..... mine is 12 oh well im gettn the sr20det soon :ylsuper

The 90's where still 12 they switched over to the 16 on the 91 and up.

[UncleBen]

The 90's where still 12 they switched over to the 16 on the 91 and up.

thanks for sayin that for me, cause i woulda : )

[implict]

ohhh... ok .. thanx

[FrEaK]

making it a beast isn't very efficeint... spend some money on it to toast local rice, but save up for the sr20 or a Ca, you will get way more power from those engines then from Ka...

[usuck]

ANDIm just about to get the sr20det..... can somepoeple give me some tips on how to make it a beast????

[implict]

i know... im gettn the sr20det.. ( s13) i will have it by christmas break:D

[C-Kwik]

making it a beast isn't very efficeint... spend some money on it to toast local rice, but save up for the sr20 or a Ca, you will get way more power from those engines then from Ka...

How so? So we've seen proven HP numbers from SR's. I haven't seen much personally in the way of the CA. But even the most etreme KA tuners have really only scratched the surface of what I would consider extreme tuning. And yet, I haven't heard of any 10 second non corporate owned SR in the states yet. And we have seen a documented 10 second KA with out any weight saving mods on the car. Hell the guy had his stereo running when he made the pass. Every motor has weaknesses. Even the almighty 2JZ-GTE motor has some. If you have the money to tune out weaknesses on a particular motor, then you will be able to build a powerful motor.

I'm not saying you have to go KA or that it is the best motor, but I really do not think we know enough about the KA at extreme power levels to make such a general statement.

[FrEaK]

It's not very efficient ... that means it's too much money... you can buy an engine that can accept more hp and install it for the same amount it would cost for a turbo... and you would still have more hp... read the post.... im sure people could easily tweak tens out of a sr... just because you haven't heard or seen it where you live... doesn't mean it misn't out there..

[C-Kwik]

It's not very efficient ... that means it's too much money... you can buy an engine that can accept more hp and install it for the same amount it would cost for a turbo... and you would still have more hp... read the post.... im sure people could easily tweak tens out of a sr... just because you haven't heard or seen it where you live... doesn't mean it misn't out there..

So tell me. How much money do you have to spend to hit 500+ on an SR? I believe Duy's KA was putting out 500+. And as far as I can tell, he didn't have to do anything drastically expensive. At least no more than a built up SR. And so far, all my sources say the SR block needs to be resleeved at some 400-450HP. I would imagine stronger pistons and rods. And not to mention, you still have to get a turbo kit for the SR to run a bigger turbo. So up until this point, both motors undergo a rebuild, a large turbo kit, but the SR is resleeved. And with the SR, you still had to buy the motor to begin with. Going beyind this kind of power, I'm certain both motors would need an expensive massage to make sure it can handle the power. But admittedly, the SR has proven recipes for this kind of power(JUN Silvia as an example). The cost of working on the KA shouldn't be much different, only any lessons learned from certain weaknesses that might be overlooked may get pretty expensive. But again, there is absolutely no reason that anyone can point out that the KA can't have the HP the SR or KA does. My argument is not which motor is better. My argument is about the fact that you don't seem to have any argument about any weakness in the KA to show it can not be tuned as much as a SR or CA. Even for the money.

[FrEaK]

are you stating that the Ka does not need to be built up to accept that much hp, it would need to be resleeves way earlier than the sr? and how many people are going to make 500 hp from either engine anyways... im saying, most normal people, would buy a turbo for the ka, and have to replace injectors, fuel pumps, ignition systems, etc etc, and your telling me that those are about the same as the sr? thats crazy... the sr can put out 250hp just with some minor mods... the cost of the sr and the minor mods, is quite bit less than a turbo, intercooler, new pumps, chips, injectors, etc etc... and no the sr wouldn't need new pistons, untill a certain point because of thier strength and beefiness....

what it all comes down to... is that it would cost more to modify your Ka into a relatively high hp range than a Sr. Why? because the Ka would need to replace all the stock parts almost, while the sr would only have to replace a couple... and minor ones at that...

thats what im saying....

[FrEaK]

I ka already takes enough cash to get to the hp level of the Sr... more than the cost of just buying the sr20

[Daunttless]

I wouldn't push a SR past 350 to the ground without some serious internal work.

Of course, I also wouldn't push a KA past like 300 without some serious internal work.

As far as Duy, his car blew up shortly there after, of course, if you did the same thing to a SR, it'd blow a rocker arm right off anyways.

They all have strengths and weaknesses, a stock SR swap is going to cost the same as a Stage 1 Turbo kit with the KA, only, you'll be making about 50 horsepower more with the KA. Of course, the SR easily catches up while the KA needs a bit more work. Its just like the CA vs. SR argument, its all completely based on each and every individual case, theres not much point in arguing it unless you get into specific engine dynamics and specific aftermarket support. Unless you like doing everything custom...

[FrEaK]

Thanks for clearing that up... i keep getting into arguments... i feel like s14=pimpin lol

[implict]

Damn, you guys know a lot.:eyecrazy

[FrEaK]

know alot about what?

[Daunttless]

We aren't that smart, well, at least Freak isn't.

[Daunttless]

Oh, and freak, don't think I don't see your post count catching up to mine. Don't make me:

A) start post whoring ( up till now I haven't = )B) erase all your posts and make you start from 0C) both

: )

Have a Freaky day.

[FrEaK]

Dude im not trying to post whore.... not yet anyways

Daunt your no Steven Hawking, no matter how retarded you make yourself look...

[FrEaK]

There is no way anyone can catch you...

[Daunttless]

hehe, until you start double posting like that. : )

[Daunttless]

Who's Steve Hawking? : )

[FrEaK]

LOL double posting is not my style... useless posts are more my style... Steve Hawking, aka, Steven Hawkings, modern age Einstein, roams around in a wheel chair with a computer generated voice... he made an appearence on the Simpsons.. im sure you know of him

[Daunttless]

yeah, astrophysicist. : ) He's currently working on gravistars, good ****. : )

[FrEaK]

sounds like a barrel of monkeys.....

[C-Kwik]

are you stating that the Ka does not need to be built up to accept that much hp, it would need to be resleeves way earlier than the sr? and how many people are going to make 500 hp from either engine anyways... im saying, most normal people, would buy a turbo for the ka, and have to replace injectors, fuel pumps, ignition systems, etc etc, and your telling me that those are about the same as the sr? thats crazy... the sr can put out 250hp just with some minor mods... the cost of the sr and the minor mods, is quite bit less than a turbo, intercooler, new pumps, chips, injectors, etc etc... and no the sr wouldn't need new pistons, untill a certain point because of thier strength and beefiness....

what it all comes down to... is that it would cost more to modify your Ka into a relatively high hp range than a Sr. Why? because the Ka would need to replace all the stock parts almost, while the sr would only have to replace a couple... and minor ones at that...

thats what im saying....

There is a multitude of definitions for build-up. And no where in my post did I say a KA would not need a build-up. But at what point that build up is required is still being explored. Currently, 350 RWHP seems to be a tested HP that the KA can handle on stock internals.

I would agree that not everyone will be building a 500 HP car of any kind, but my point is that there is no reason the KA can not do it.

As far as cost, there is always a debate here. Depends on the prices you get and how far you take it. As an example, say you get an NSport kit($3500?) add a JWT ECU and 50lb injectors, boost about 15 psi...should net you over 300 RWHP...probably about 350. We'll say conservatively, that we spend about $5000 to get the KA to this point. To get an SR to that point we can consider $2000 for an SR, say $1500 for a Larger Turbo and manifold with associated piping to make it work, $1000 for a FMIC, and say minimally $500 for a fuel management upgrade using only larger injectors with a piggy-back computer. Funny, I'm adding up to about $5000 for each so far. And since I am estimating costs conservatively, the SR may actually cost more up to this point. Now lets say we build up even further. I would guess the KA will need upgraded internals first since it's running higher compression. Keeping in mind the KA is an iron block, the block should prove to be stronger than the SR block. Thus the need for resleeving the SR. That's not to say at some point, the KA may benefit from a resleeve if you get up to a point where even the iron walls of the KA begin to show it's weaknesses. But you will likely find the SR will need to be resleeved before the KA. But chances are most people will be content with the power we've reached so far. And so far both are coming quite close in terms of HP potential. As far as I can tell, there is a back and forth battle that can be won by either motor dependong on how they are tuned. And you have to remember, it's not necessarily all about HP either. Other factors of how the motor responds, where it makes power, and the car's intended use comes into play as well.

As far as the 250 you can make easy with the SR, sure...if you are content with that. I for one am looking for more. And stock KA's can see about 225 HP at only 7 psi of boost. And all the kits out there are overbuilt for the power they were designed around. Try to look at the big picture. In my opinion, the SR is a great motor, but way overrated in comparison to the KA. I will not argue about which motor is better, and that is still not my argument. But I really think you underestimate what the KA is capable of and the costs involved in buliding a fast car. Regardless of which motor you use.

[Daunttless]

I just want to point out that, while this is not a disagreement with Kwik's point....It will be a bit more than 5,000 for either motor to get to 350 rwhp. Also, it will take a few different things than pointed out for the SR. : )

Other than that, great post. : )

[7HE_DON]

i dunno about SR and Ka price being the sameONLY the S15 would push 350 HP and that putting its PSI to the limit without internals (10 PSI btw)the price for a S15 SR20 now is at least 5000$with 5000$ I would have enough for an HKS ball Berring turbo (fabu) around 2300$ including the system with it (price of a red top SR20)leaving me with quite a bit left for cams going at 500$ a pop (then grinding them)custom JE pistons for 400$ eachleaving me with 500$ for maybe headers and exhaustof course i'd be limited to maybe 10-12 psi making me pull an easy 280 HP but the torque for a turbo'd KA would be intenseI'd have to do more work like valve sleeves and stems and to the extreme i would freeze my engine after boring it out :ylsuper