NA-KA power

[costa_rican13]

At first, you might feel that your car is getting faster. But go test drive something with at least 300hp. Your definition of "fast" changes at that point. When I did that, I realized that any power mod that wasn't gonna get me close to that performance was a waste of my time, money & effort. I decided to turn my focus on my suspension, brakes, wheels/tires until I could afford the power I wanted.

i'm thinking the exact same thing. once i drove a jaguar xkr (V8-supercharged 5.0L) has around 500hp. blew my mind..i went out and got coils, arms, and realised its gona be a good couple years before i boost my ka and even have close to 250...

[Caveit77777]

Didn't read all the other replies but if you want power then turbo it or swap it. NA ka mods are a waste of time and money.

[kingtal0n]

This is fun. Heres what the engines are good for in OEM trim:

KA Engine: Good for daily driving, reliability, and fuel economy. Enough torque to pull a trailer. Leave it OEM.

SR Engine: Good for daily driving, reliability, and fuel economy. Enough horsepower to make you wonder why Nissan installed the KA first. (they probably figure stupid americans would try to pull a trailer) Leave it OEM or < 350 horsepower for reliability in OEM trim.

RB Engine: Good for saying you have an RB

2J Engine: good for daily driving, reliability, and fuel economy. Ditch the twins and install a single with a real fuel system. Enough torque and horsepower to make you wonder why Nissan didnt make the sr20 a straight 6. (check the bore/stroke of the SR20 and compare to the 2jz!!) stay below 500horsepower for OEM reliability.

Now its your turn!!!!

[jbracy7]

get it runing 100% with a good tune,248/232 cams are good but you need some experence to do the job right, i tell u what get another kade and practice on it so u dont mess up your daily driver

[Gabes13]

This is fun. Heres what the engines are good for in OEM trim:

KA Engine: ...fuel economy.

RB Engine: Good for saying you have an RB

Now its your turn!!!!

I get 32mpg highway in my rb20, way better than my old single cam.

[costa_rican13]

rub it in our faces!!! thanks -_-

[pella]

get it runing 100% with a good tune,248/232 cams are good but you need some experence to do the job right, i tell u what get another kade and practice on it so u dont mess up your daily driver

What do you do when you tune a NA KA? What changes, and what kinda difference would be seen driving the car?

[simmode1]

What do you do when you tune a NA KA? What changes, and what kinda difference would be seen driving the car?

The ecu really should be retuned to adjust it's air/fuel ratios to account for the increased volume of air your motor will be pushing through it and keep it from running lean.

Retuning after these mods will make everything work together more efficiently. But few ppl spend time and money tuning an N/A KA.

[jbracy7]

so true but it makes them easier to drive and will last many years of hard driving,track days.trust me learn how to do tuning right,your ride will have less problems you will have less head aches

[pella]

If i were to take it someware for a tune, how much on average would that cost?

[costa_rican13]

3-500 for sure. tuners make their money most definitely.

[pella]

Thanks, ill be doing that. Also, I have a rebulit KA that has a few bolt on upgrades. Didnt know that a tune on a NA KA would make that much difference, now im thinking about upgrading injectors. I replaced the pistons, bought a remanufactured head, Cometic head gasket, Injen CAI, BRM 2.5 exhaust (I love it) Custom stainless test pipe with AEM wideband UEGO A/F gauge, Z32 fuel filter, Walbro fuel pump. My friend has some 370cc injectors that i can use, would it be worth it to use them? And then tune of course. What kind of gains does this all add up to? With and without injectors? Also I dont really know the difference the changes have made cuz i did intake,exh,rebuild right away it was siezed when i got it, with the timing chain guide in a million pieces at the bottom of oil pan. LOL

[costa_rican13]

get the wideband on ebay. i got mine for 160. cheapest i could find it.and its legit and works perfect too.

[pella]

get the wideband on ebay. i got mine for 160. cheapest i could find it.and its legit and works perfect too.

Maybe we got from same person. I think thats about what i paid for mine. Are you using yours as read only, Or did you remove the one in manifold and use the UEGO output to ECU?

[simmode1]

What kind of gains does this all add up to?

Not alot. Maybe around 145whp, I'm thinking.

Seriously guys, we do have a Naturally Aspirated KA forum. Go poke around in there. I think the most anyone ever made in an street N/A KA was like around 165whp. And that was with higher compression SOHC pistons, all emissions deleted, some OEM cam swap and the rest of the usual bs.

Thats alot of effort for not much gain at all.

[LoserCard]

Highest gains WITHOUT SOHC pistons were 162-165/170 whp/torque (documented). Highest gains WITH SOHC pistons, probably around 175-180 whp (undocumented).

BTW I am not talking about the whole fully built ones that aren't even daily drivable and are netting 200whp.

[Flicktitty]

i would really like to see someone build a N/A Ka. a 250-280RWHP NA setup would be killer. i know there are a few shops who have done it. Get a good valve train/camshafts/ high compression pistons. good header/exhaust/intake manifold setup and see what it will do.

and for whoever said 2JZ's are only reliable at 500hp underrated that motor haha. plus a single turbo 2JZ-S13 gets mid 30mpg on the freeway.

[sommmatt]

250-280whp NA KA would be super high compression, stroked, race gas, custom manifolds, a whole s*** ton of head porting, custom huge cams, and incredibly expensive. With that head design, you still may never even come close to that mark.

[pella]

Would i be wasting my time going to 370cc injectors?

[badbob2121]

Would i be wasting my time going to 370cc injectors?

i think this whole thread is telling you that your waisting your time and money on anything that doesnt involve forced induction for hp gains...

[costa_rican13]

get the wideband on ebay. i got mine for 160. cheapest i could find it.and its legit and works perfect too.

Maybe we got from same person. I think thats about what i paid for mine. Are you using yours as read only, Or did you remove the one in manifold and use the UEGO output to ECU?

Probably so, and no I use it as read only. I should probably use it as the main one to the ecu too, but idk how. Lol unless that's what the extra wire was for something to to the data logging ecu is what I was told by aem themselves. But I didn't want to mess with the ecu wiring. And yes basically n/a ka is a waste. Way more power could be achieved with no internal work, fuel system/management upgrade, tune, and basic turbo items. That's what I'm doing. I have an extra turbo from an rb20 if you wanna buy it for for 100 plus shipping, Has elbow as well.

[pella]

Costa rican-
Theres an output wire from the gauge that would tie in with the old O2 sensor wire. I tried it with the wideband in exhaust mani, but the AEM wideband needs to be at least 36 inches from engine, i dont think it likes the heat. So i hooked back up the stock one in mani, and relocated it to a test pipe. Just readin. Yes i know it is a waste of time, as my hate mail box fills up LOL. I would love to add more air, but i live in the communist state of california and thats just not an option. So im left with what I got, just tryna improve upon that, ya know? I got some things to take care of on my truck, a few loose ends on the 240, then may get a coupe and just turbo that as a track car.

[jbracy7]

to pay a shop to do your tuning would cost more than any basic mod you can buy, building a N/A KA is not a waste of time because its a learning experenice its best to walk before you try to run. tuning is important but you wont see that much change in power, but you can change where the power is put down.N/A KA is a good start for first timers, dont worry about these power hungry niconuts build your car the way u want and we will flame the shizz out of u but we will respect u for it

[costa_rican13]

i thought you couldnt have swaps in california? but if not turbo then supercharger? do it!