N/A

Are there any N/A fans out here.  I know the potentials of the SR and the CA and I've had both in the past and I like them both, but you know there something that you don't get in a turbo.  Theirs something about the way the n/a sounds that you can't get in a turbo(i'm not talking about the lawnmower shit either) and the accelerator response.  Can I get about 170hp out of a n/a sohc engine and still be street legal.  I don't want to have to anything to the bottom end.  The most I would like to have to do is mill the block surface to get some higher compression and whatever needs to be done with the head.  Only thing is that I don't want to have start changing out pistons and boring things out.  Any suggestions on some kits.  Maybe I should've asked this in the tech section.

[LanceS13]

#Moderation Mode

Yes you should have <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

<a href="http://www.zilvia.net/forums/cgi-bin/topic.cgi?forum=2&topic=2064" target="_self">Moved here</a>

[LanceS13]

Do you mean 170hp to the wheels or at the flywheel?
I'll assume flywheel...which means you have 140hp stock with the SOHC. &nbsp;So we're talking another 30hp. &nbsp;
I/H/E is start...probably 15hp gain at the flywheel. &nbsp;A good cam should get another 15hp at the flywheel....walla, you're done. &nbsp;Now if you want 170 to the ground, you'll probalby need somewhere around &nbsp;190 at the flywheel...another 20hp. &nbsp;A lighter crank pulley will probably free up about 5hp. &nbsp;Port and polish will probably get 8-10hp. &nbsp;Then maybe if you could do some milling to bump the compression up and maybe run higher octane, you might could hit your mark. &nbsp;Of course, all this is just a big educated guess. &nbsp;It's possible to get that kind of power out of n/a, but it may take more or less than what I've just stated.

[240meowth]

yah, i'm thinking about going N/A, since little people know much about the CA i was going to get. &nbsp;and i want it street leagl. &nbsp;the best solution i can think of for my dohc is probibly 11.0:1 compression ratio. &nbsp;again, the sohc engine has a higher compression ratio to start out w/ so i dont know...

[Gismo R]

How about a lightened flywheel? How much will that free up?

[Tuck&Poke]

well if your going na you should definatly raise your compression. &nbsp;if you willing to use premium fuel go ahead and raise it to 11.5:1 or so. &nbsp;bigger injectors for more fuel. &nbsp;not too big cause then youll be running rich. &nbsp;port and polish. &nbsp;port the valves lighter valves (titanium?) and stiffer valve springs to raise your rpm range. &nbsp;forged internals. &nbsp;headers ignition and of course the basics like intake and exhaust. &nbsp;a lighter flywheel will free up hp and make the engine more responsive. &nbsp;pulleys will also help. &nbsp;more extreme cams and adjusable cam gears. &nbsp;that will give you some seriouse hp if you tune it right.

[Jeff240sx]

But see... if you're messing with the engine that much... you should really get a higher flow fuel pump to feed those injectors, and a larger MAF sensor. &nbsp;Like from a '93 Cobra. &nbsp;Then, since you'll have to get your ecu reprogrammed for the injectors, you have them do a program for the MAF sensor.
Not only will you get much more air in there, and fuel, the reprogramming has HUGE hp increases from what testimonies I have heard. &nbsp;10-15hp increases on mildly modified engines.
And for N/A power, sorry, but you will have to swap pistons. &nbsp;High comp and strenth is a necessity...
-Jeff

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from 240meowth on 12:56 pm on Feb. 20, 2002
yah, i'm thinking about going N/A, since little people know much about the CA i was going to get. and i want it street leagl. the best solution i can think of for my dohc is probibly 11.0:1 compression ratio. again, the sohc engine has a higher compression ratio to start out w/ so i dont know...
</td></tr></table><span id='postcolor'>

If you have access to a CA you might as well go with that because personally I like the CA better than the SR. &nbsp;I think its psycological &nbsp;because when I used to have a CA I had no problem revving the stock engine pass the redline(it had an Sr turbo though), but with the SR I felt like I had to be a little more gentle with revving. &nbsp;I never went over 7000 with the SR except for once and I was pretty scared. &nbsp;Like I said its probably ass in my head because of how I used to hear about the SR's weaknesses. &nbsp;Anyway I think I'll go with everyones suggestions. &nbsp;It doesn't really matter if I hit 170 horses at the wheel because if the car feels good when I drive it that's all that matters. &nbsp;Also I'll be working on the suspension. &nbsp;I'm probably going to keep the stock wheels but change the tire size to reduce the sidewall and add spacers to have them flush with the body. &nbsp;The car should feel alot different just by doing that. &nbsp;I'm going to be working on it little by little.

[Tuck&Poke]

if your going n/a boring would be a good idea. &nbsp;at least stroke the crank

[240meowth]

i heard a flywheel that's too light wouldn't be good as well. &nbsp;you get vibration or somthing...

[sykikchimp]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from minime686 on 3:33 pm on Feb. 20, 2002
if your going n/a boring would be a good idea. at least stroke the crank
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The KA is already a stroked engine. &nbsp;I believe that is one of the main reasons it is a lower RPM engine from the SR

(Edited by sykikchimp at 4:43 pm on Feb. 20, 2002)

[geeaj]

You shouldn't bore the ka24e, the cylinder walls are already very thin. Your best bet for 170hp at the crank is i/h/e, along with ecu upgrade. Electric fan and lightweight pulley would help too.

Then to put the newly found power to the ground, add a vlsd from either an infiniti or an SE s14/s13.

[crazycuban]

The only way to get real power out of a n/a ka is with either individual throttle bodies or carbs...so go with the carbs, cuz they're much cheaper. &nbsp;There's a 13 sec n/a sohc, running carbs.

[drift freaq]

Ok , Rebello racing in Pacheco California can give you 210 hp at the flywheel with a smog lega NA engine.
It is not impossible to get HP out of NA engines its just expensive. for the same amount of money that you spend to get 210 at the flywheel NA you could drop a Turbo on and be putting out that amount at the wheels or more.
Plain and simple Turbo's are the biggest bang for the buck these days thats why everybody is going Turbo .

[s15dude]

What are the compression ratios for all of the KA motors?

[Grant]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from drift freaq on 9:37 pm on Feb. 20, 2002
Ok , Rebello racing in Pacheco California can give you 210 hp at the flywheel with a smog lega NA engine.
It is not impossible to get HP out of NA engines its just expensive. for the same amount of money that you spend to get 210 at the flywheel NA you could drop a Turbo on and be putting out that amount at the wheels or more.
Plain and simple Turbo's are the biggest bang for the buck these days thats why everybody is going Turbo .
</td></tr></table><span id='postcolor'>
turbos and really high tuned N/A &nbsp;also require more maintenance for the money (which I dont have). I'm hoping I can get about 150hp at the wheels you think I can manage that?

[drift freaq]

yes Grant, you can manage 150hp at the wheels NA and still pass smog. Alex Chang has JWT cams, ECU,Intake,exhaust and a few other goodies and just passed smog.
As far as Turbo's being high matinence. Not if they are done right and you keep your boost in the 7-11lb range they can be very easy to mantain and reliable. Matinence of them is like maintaining any other engine . i.e. belts , lines,sparkplugs ,oil,water, etc....

[Nismos14]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from Junia on 3:31 pm on Feb. 20, 2002
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from 240meowth on 12:56 pm on Feb. 20, 2002
Like I said its probably ass in my head </td></tr></table><span id='postcolor'>

ahhhh now that ass in the head problem.... does that occur regularly? lol