NA bolt-on estimates ...

[formeRiceR]

okay after days of thinking I've decided that I'm going to limit my spending on my project (AKA NO TURBO). With college loans kicking in in like a couple of months and my summer trip to Japan and Korea, I need to stop spending money.

I'm wondering what kind of figures I would be putting down with the following mods:

Short Air Intake
OBX SS headers
SAFC
Pullies (maybe)
PDM cams
Electric Fan
70mm JIC exhaust
Centerforce Clutch ( I know it doesn't add HP )


Also is there anything I can do to squeeze out some more power. I Just want something that would be fun to drive around in. 200 hp is unrealistic N/A.

[sticky240]

im sorry if this is a retarded noob question, but what does/can you do with a SAFC (Air/Fuel controller right)?

[formeRiceR]

correct de mundo...

yeah my question is a noob question too...

[ICKY]

exhaust+headers+intake, my brother clocked a high 14 in his S14. more like an air filter than an intake tho...

[HyperTek]

bring you up to a whooping 155hp!!!! hehe jk. But I wouldnt be surprised, probably just better throttle response. Since cars loose alot over age, wear and tear, and drivetrain.

[zombieman]

im sorry if this is a retarded noob question, but what does/can you do with a SAFC (Air/Fuel controller right)?

you can raise your hp and torque

[sticky240]

you can raise your hp and torque

umm, you mean like across the rpm range? Like instead of peaking at like 4500 you can set it to peak at around 4000?

[Colorado S14]

The S-AFC allows you to adjust the air flow meter signal before the ECU. The ECU then reads the adjusted signal and adjusts fuel accordingly. This allows you to modify the signal to obtain the proper ration of air to fuel. It will add power if tuned correctly, but on a NA 240sx it wil most likely only give maybe 3-5 HP, turbo cars however can see gains of 10-50+ depending on how bad the mixture was before. The biggest diference that I noticed on my car with it was that the engine ran smoother, not a whole ton of extra power.

[sykikchimp]

I would guess about 160whp. That's about average for I/H/E/cams, and pullies.

[Var]

for the price of the Safc plus 100 bucks you can buy higher compression pistons which @ 10.5:1 compared to stock 8.5:1 should give you like 30 horses to the wheels, and you can bore it out while you're there. Better investment IMO that the SAFC cause you wont need it. People run 200 horse n/a ka's with stock injectors. all you would need is a fuel pump. And i'm guessing the Jic exhaust is way over 500 bucks.. To be more cost effecient buy used intake/exhaust. IMO these are overpriced when brand new.

[sykikchimp]

fuel pump is not necessary.

and proper fuel tuning on a KA with those mods will give more than 3-5 hp. more like ~10. I know a guy that got 12 whp when he added a JWT NA ECU with Cams intake exhaust, and underdrive crank pulley already installed.

[Var]

i was talking about the 200 horswepower guys. But you're probably right. I asked Bill Gude who builds those kits for Ka's and i think he said stock fuel system is ok.

[Nismo240SX]

get everything you mentioned plus a test pipe, and a lsd. With those mods, it will be a simple, but yet fun n/a car.

[pruto]

i dunno man... stock KA with lsd is a simple, yet fun n/a car...

with all that money, save up for suspension or a turbo kit, the HP per capita you will be getting is WEAK for any of the NA mods. why bother?

[95Blue240sx]

^^^^ werd. the only think i have on my car for "perfomance" is a aem intake. i wend full suspension with a vlsd(sucks) but still fun for me.

[formeRiceR]

already have a VLSD and my suspension is pretty good:

HKS HyperMax-II
Nismo Power Brace
Touge Factory T/C rods
F/R Strut Bar
300zx w/ Project Mu Pads

Thinking about getting sway bars but I hardly have any sway with my current setup.

Just need to get a little more power. Not askinf for too much...

[mike13]

in my opinion those mods are a waste of money that wont give you results you are looking for.
Unless you gain 50 hp, dont even get out the checkbook. just my opinion on beginning to mod an engine.

[mellojoe]

If you've got a pretty good suspension, then you've done all you should with the stock KA. Go for the intake/exhast and be done.

[nightwalker]

I like the response you get with NA. Especially if you want to auto-x, or like to do touge. My plans for NA building (taken from my crazy NA Honda days)...

shorter intake on passenger side, HKS filter
headers
3 inch exhaust
test pipe
pullies
MSD ignition
extrude hone intake manifold
port matched and enlarged throttle body
some KA24E pistons
lightening up the car (A LOT)
NGK plugs and wires
cams... not sure of yet
JWT ECU

I estimate somewhere around 180 ish to the wheels. Right now, all I have is an exhaust, msd, and HKS filter on factory pipe, and the car is fun. You should see the look on the SR guys faces when they can't pull away from me on the touge, or when my drifting looks better.

[Chernobyl]

raise the compression, cam the crap out of it, and put two weber DCOE 44's on it (carbs, for those who dont know).

Thats the only way you'll make a noticeable amount of power with a KA.

Believe me, I drive a stock KA and have driven two that had all the bolt ons you mentioned (plus or minus one, i dont remember the details). My car felt no slower than those two I drove.

I did like the lighweight flywheel in one of those cars... that's a fun investment.

[Nismo240SX]

... about the previous post... i drive ka for now, but highly doubtful you keep up with them.

[Chernobyl]

and who cares if I dont? they still FEEL slow. and you'd be stupid to waste money to make your car feel no faster (read no more fun)

[citizen]

Whats maximum safe CR on 91 octane? Would the 11.1:1 cr from the ka24e pistons be ok?

[nightwalker]

I'm sure your butt dynos are all very accurate. There are factory cars running 10.5 compression. 11.0 is nothing but pinging.

A side note, NA power is pretty dependant on upkeep with the car. If you don't keep it tuned, all the parts are not going to make the power they're supposed to. for instance, on the KAs, if your coolant temp sensor is not working well, it can cause you to lose 10hp at the wheels.

I like NA for a couple reasons, maintenance ease, heat, longevity, durability, margin of error (tunining)

[S14DB]

Don't pay any mind to the turbo nazis. I would start with the exhaust cause you'll get gains in power, sound and, style. I would go with the Injen cold air set up. I drove around for 6 months with the short ram and added the CAE for the summer and noticed a deff. kick in the pants(low end). I have the OBX SS header in and it is great. It will make your car sound lower and louder. Everyone I know seems to like the lower tone but it rings a bit when it's cold in the cabin. Once it gets warmed up it's sweet. I have ordered the ASP pulley and will see how that goes.

[formeRiceR]

yeah I got a another question for you guys....

I was running the car decently hard last night, and I had 2 people in the car with me, and all of the sudden the CEL comes on, I pulled the code last night and it said that it was the detonation sensor....and athe crank angle sensor. I've never had a check engine light on the car and I've pushed it on many different occasions ... my question is .... how can I prevent detonation?

[hurleyboi514]

id really like to throw a set of carbs on a KA... them some cams and sohc pistons... mmm... that'd be fun...

[Propagandhi41]

why sohc pistons?

[NervGS]

Rebello.

-glenn

[Phlip]

why sohc pistons?
Higher compression

[Var]

. I would start with the exhaust cause you'll get gains in power, sound and, style. I would go with the Injen cold air set up. I drove around for 6 months with the short ram and added the CAE for the summer and noticed a deff. kick in the pants(low end). I have the OBX SS header in and it is great. It will make your car sound lower and louder. Everyone I know seems to like the lower tone but it rings a bit when it's cold in the cabin. Once it gets warmed up it's sweet. I have ordered the ASP pulley and will see how that goes.


yeahh right. Your whole post was about making your car sound better. o and you'll get 15 or 20 horses from that 1200 dollars. Pistons are the way to go for N/A power. RUN 10.5:1 or dont even bother bulding your KA up. Otherwise it's optimum c/r for turbo.

[zero.counter]

Upgrading the entire fuel system is something to think about as well, FPR, PUMP, INJECTORS, your S-AFC, lines, fuel rail. Either way it will help you, whether going N/A or turbo.