planing to go ka-t...YAY! how much hp to expect?

[scotttak]

have a 91 240sx coupe

i'll be runningt3/t4 with .57 trim ~7-8 psifmic

safc neo (includes vtech controller, so just incase i put a wireless phone in my car)

370cc sr injectorshks hipower cat back exauhst 2.5 inch piping 4 inch outletopen atmosphere bov and wastegate

probably gonna remove cat...dont see why not cuz not gonna pass smog regardless

underdrive pulleylightened flywheelwalbro 255 fuel pump

[KATwo40]

You should be able to safely make around 230whp with that setup on those boost pressures, so long as you don't try to drown it with fuel to "be safe."

[scotttak]

you guys think this would be a fun daily driver???!!! wanna keep boost minimal before 2500 cuz i dont wanna hit boost when im not trying to go fast.

[lrb_2000]

of course it's going to be fun. A stock 240 is fun for a daily driver. Now you're jsut going to have a less reliable daily driver, but with some power. 7psi seems like a waste on such a big turbo though. Maybe you should consider some others. Also, what manifold, and innercooler route are you taking? (front mount, or sidemount) as well as wideband and such.. you listed a pretty general setup.

Also, 2.5" exhaust is pretty weak for a turbo car.. hell even a n/a KA it's almost too small.

[KATwo40]

of course it's going to be fun. A stock 240 is fun for a daily driver. Now you're jsut going to have a less reliable daily driver, but with some power. 7psi seems like a waste on such a big turbo though. Maybe you should consider some others. Also, what manifold, and innercooler route are you taking? (front mount, or sidemount) as well as wideband and such.. you listed a pretty general setup.

Also, 2.5" exhaust is pretty weak for a turbo car.. hell even a n/a KA it's almost too small.

I really hate being the guy on this forum that disagrees with 75% of what most people post, but I suppose someone has to be that guy. So, please don't take offense to this but...

My KA-T has been boosted for about 2 years now. It's a stock engine with 200k mile on it. In the last 10k miles it has been showing it's age pretty well, whatwith smoke on hard pulls, excessive blow-by and whatnot.

However, before about the last 10-15k miles, it's been fantastic and totally reliable. Reliability is subjective. Some parts just break because they're bad parts, not because they have a turbo on them. And most of the "I blew my car up" threads in this forum are a result of installer/operator/tuner error.

Mine is not the only example, either. There are many proven setups that have been installed/refined on high mileage KA's that are still running today without drama.

Additionally, a 2.5" exhaust is fine for his power goals. It's been shown over and over that 2.5" turbo-back setups will flow just fine up to around 280whp on the KA.

But not to worry! I TOTALLY agree that a T3/T4 .57 trim is a bit overkill for a 230whp application. A T3 super60 would be fantastic. He'd see quick spool around 2500-2800rpm, have plenty of flow up top and it would have the sweetest flat torque curve you could imagine for a fun, zippy street car.

[S0lid_Snake]

you may have issues with a open atmosphere BOV, unless you move the MAF to a region after the BOV

[Jookmasta]

not tru, tuned ecu or safc can correct for the atm bov.............

[Bosrudorfer]

I say about 190whp or less. You wont break 200whp though.

And I'm running an Apexi Dunk exhaust, that thing has a 4" tip

[elpiar]

I have a t3 turbo 60 trim (very similar compressor map with super 60, not worth the 100 bucks addt'nl) for sale:

http://cgi.ebay.com/ebaymotors...d=1,1

[KATwo40]

you may have issues with a open atmosphere BOV, unless you move the MAF to a region after the BOV

When I ran the stock MAF sensor, I never had one issue with the open atmosphere BOV.

After I switched to the Z32, the problems have yet to cease. I'm pullin' my motor for the built swap this week and I'll be swapping over to a blow-thru setup, which will cure the problems.

My point is, the stock MAF is much less prone to signal distortion from backwash and turbulence and he probably won't have any problems with it, save for the occasional little exhaust pop from the slight rich condition associated with it.

[scotttak]

what would i need to hit 220ish hp????can the stock maf handle this???my goal is to hit above 200whp

im most likely gonna try to tune the fuel myself. i have a wideband waiting to be put on. any suggestions for ignition timing? or do i even have to worry about that as much. whats the recommended retard for the power level i wanna reach??? thx for all your help, im just trying to finalize my plans and make sure im not forgetting anything. if it counts for anything, im gonna have a wideband, boost, water temp, oil pressure, and pyrometer to make sure i dont take out 3 blocks if i explode. my friend said his 2003 stock civic ex sounds like it wouldn't even hurt him if it blew up, but he said my car sounds like it will take out 3 blocks if it did.

[98240]

The stock maf will be able to handle 220

what manifold are you going to use?

[Dustin240]

7.5-8psi and u will be over the 200whp mark. The t3/t4 will work great and if u ever want more boost u'll have the right turbo. The stock mafs will be good for 230-250whp but I think u should use a blow threw mafs setup.Stock IGN timing will work fine for 7psi - 14.5deg for 8psi.

[SilviaSlydSydway]

i just got 230whp on a simular setup. I also used the stock mafs and it is fine for that much power. you should definatly do a blow through setup if u use atmospheric bov though.

[KATwo40]

7.5-8psi and u will be over the 200whp mark. The t3/t4 will work great and if u ever want more boost u'll have the right turbo. The stock mafs will be good for 230-250whp but I think u should use a blow threw mafs setup.Stock IGN timing will work fine for 7psi - 14.5deg for 8psi.

14.5* is way too retarded for 8psi on the DOHC engine. Knock the base timing back to about 16*BTDC and rock on. You'll be fine.

[scotttak]

how hard is it to do a blow through setup? i already bought an ebay fmic kit with piping, so id have to do some cutting im guessing. what if i attached it with a coupler directly to the intercooler and wrapped a bunch of plastic wrap around it to keep the water out? but really, im planning on choppig my short ram to make an intake pipe for the turbooo.

i didnt want to admit this, but i bought an ebay turbo kit . i know i did my research on this subject so please dont flame. im pretty good at making cheap things work better....somehow i will do this, but in the end i probably wont. the only thing i can see going bad with this turbo is the turbo itself and possibly the wastegate. but im gonna be running a boost gauge with both my eyes fixated on it at all times while im driving.

quick question, how does a manual boost controller and the wastegate work together??

[SilviaSlydSydway]

just cut a few inches off the coldpipe where the upper and lower one meet, and put ur mafs in with couplings. And the MBC stops the boost signal from getting to the wastegate until gets to the pressure that you want. then it will let the pressure through and open the wastegate and it will keep blocking pressure unless it is above your desired boost. correct me if i am wrong.

[scotttak]

all right...got most of the turbo kit today. just waiting on the manifold. .63 turbine housing, .50 compressor housing t3/t4. everything seems to be in order.

[scotttak]

just installed the intercooler...hardest install evverrrrrr

[SilviaSlydSydway]

pics???

[scotttak]

sorry i dont got a digi cam...and my phone with a digi cam got stolen at gunpoint....!!!

[1995240sxSE]

that must be a desprate dude, phone at gunpoint, lol! Good you are safe.

[S13FX]

Let me tell you, even though I never took my KA-ET to the Dyno. But I ran the Precision GT32 at 8psi, with stock maf and I know I was making between 250 to 270rwhp, cause I was maxing the **** out of that maf closer to red line.

Only thing that I think kept me safe from going lean out when I was maxing out the MAF were my 550cc injectors.

But then again my tune kicked major arse so that probably had a lot to do with it.