Will a gt28rs be useless with no management on a ka24de?

[Axoure Dragonkin]

I am asking if the disco potato will be useless with stock maf, ecu, and injectors on the ka. Those will come later to make my ultimate goal of ~300. Right now I'd like to get my ~210 but I do know the final setup will use the gt28rs.

I'm fine with waiting on the other stuff if that's what it takes to run it.

Thanks.

[AZhitman]

If you're asking if you can put a turbo manifold and a turbo on an otherwise-stock motor, the answer is: It won't run.

[WDRacing]

The stock MAF maxes out around 250whp. The stock injectors will safely allow for like, 4 psi of boost. But it's not something I would ever recommend. The FMU is only $100 or so. It raises fuel pressure as it see's boost, so as boost rises it adds more fuel pressure. This is the best bang/buck option when no tuning is the only other choice.

I'd also recommend retarding the base timing just a touch, about 2 degree's or so. This will provide a margin of safety against knock.

With the FMU and a slight retard in timing you can run 8 psi of boost. If you choose to go this route, swap out the in-tank fuel pump for a 255lph pump. They are $110 from Summit Racing.

WD

[Axoure Dragonkin]

I was planning the fuel pump before any turbo upgrade.

I forgot to add a boost controller of some type.

So...

FMU, boost controller, and turbo (pipes, bov, fmic, etc) would at least get me running. I figured as much.

My real question sorta centers around... is this a useful range for the gt28rs? or would it be better to hold off for the whole setup with injectors and ecu?

[WDRacing]

This may come as a suprise to you, but the GT28RS is a small turbo homie. The T2 flange is actually a restriction for the KA after about 8 psi. The T2 flange and the tiny internal wastegate just don't flow enough.

Depending on the trim of the turbo you might be able to make 300whp, but you're gonna need to run about 7 psi more then you would if you were using say a T3/TO4E.

Not a bad turbo, won't have any lag, but not the optimum IMHO. But I'm a T2 hater

[Axoure Dragonkin]

I've heard the t2 flange is a restriction... any way to work around that and still get quick spool? Like a different housing?

I'm not building a strip car. Drift/autocross car. The higher psi doesn't bother me as long as it does what I want.

Doesn't the T3/T4 combo work better in the higher rpm range, when the ka would be dropping off?

I'm really looking to have power throughout (mostly) each gear.

I've already reached the limits of the ka as it stands.

[WDRacing]

Don't get me wrong, you'll make gobs of torque right from the get go. It's not a bad turbo, just not the most efficient of choices.

[sunnys14]

No engine management or fuel = kaboom!

[ghx407]

Those will come later to make my ultimate goal of ~300. Right now I'd like to get my ~210 but I do know the final setup will use the gt28rs.Thanks.

I've heard the t2 flange is a restriction... any way to work around that and still get quick spool? Like a different housing?

I'm not building a strip car. Drift/autocross car. I'm really looking to have power throughout (mostly) each gear.

Consider a T3/T4 with a .48 A/R hotside. They spool quickly in a KA and would give a good powerband for drift/autox. It would be suitable for your current (210) and ultimate (300) power goals. They're also cheaper and less restrictive than a GT28RS.

Heed the advice on fuel/engine management, it's crucial.

[Axoure Dragonkin]

I'll do some more research on that T3/T4 setup. Thanks a lot.

As for the other, I know low like LOW pressure can be done with no ecu upgrades. Like was said before.

[Chris28]

The stock MAF maxes out around 250whp.

WD is a noob and knows nothing about adding forced induction to a KA.

I hit 297 with a stock MAF, that is the absolute upper limit of it though. If you are going the better route (t3/t4) you shouldn't even consider keeping the stock MAF, let alone injectors. This has all been said, but heck I'll say it again.

Oh and in regards to the original question, don't even try to boost with stock everything. It's just asking for trouble. Save up and get engine management first. I drove around for about 6 months on my tuned ECU and larger injectors before installing the rest of the turbo parts.

[WDRacing]

You're the one with the running KAT, I've been on the bench for years

My build thread will start SOON though. My supercharger was shipped yesterday

AD, the FMU counts as fuel management btw. So if you need to, you can use that until you're ready for whatever upgrade you decide on next. We have guys that have been using the FMU and 8-10 psi of boost for years with no problems at all.

Just need SOME type of method to add fuel while on boost. Hell, even a cold start injector wired to a hobbs switch would work

WD

[Axoure Dragonkin]

with the .48 hotside, what would be good for the coldside for my power goals?

[CTS13]

Why is everyone going turbo so cheap. If you want power, pay to play or shut up.

[Axoure Dragonkin]

Who said anything about cheap.

I don't need 600+ hp.

I prefer something scalable (you know, like this great thing call the internet)

I'd rather not buy parts twice or start going a different direction and sell parts at a loss.

One other thing, what was it... Oh yeah... I have a house payment.

[CTS13]

asking to turbo a car with stock injectors means your doing everything cheap. If you cant buy new injectors, leave the car alone. Either you want a turbo on it to tell you grandma you have a turbo or you like power. And with power, you have to pay to play... even a little.

[jeff420]

Why is everyone going turbo so cheap. If you want power, pay to play or shut up.

not always true. like wd said people have run "cheap" setups for years without problems. you make it sound like you need to dumb tons of money into it to make it fast, not true. i got my 240 running low 13's and high 12's on the cheap. it was always fun beating the guys who "payed to play" with my budget setup.

[Razi]

You're the one with the running KAT, I've been on the bench for years

My build thread will start SOON though. My supercharger was shipped yesterday

AD, the FMU counts as fuel management btw. So if you need to, you can use that until you're ready for whatever upgrade you decide on next. We have guys that have been using the FMU and 8-10 psi of boost for years with no problems at all.

Just need SOME type of method to add fuel while on boost. Hell, even a cold start injector wired to a hobbs switch would work

WD

Are you going to make a thread here to document the build?Whoop Koshin for me. :P

[Axoure Dragonkin]

lol, hey jeff i see your posts on CL all the time

[jeff420]

lol, hey jeff i see your posts on CL all the time

yup im the s13 240sx king in the dfw area. hell probably texas. possibly the world muhuahahaha. i dont know anyone who owns as many as i do lol.

[WDRacing]

Why is everyone going turbo so cheap. If you want power, pay to play or shut up.

asking to turbo a car with stock injectors means your doing everything cheap. If you cant buy new injectors, leave the car alone. Either you want a turbo on it to tell you grandma you have a turbo or you like power. And with power, you have to pay to play... even a little.

Two great posts

Have a nice day and GTFO

Seriously, don't just come in here and post negative crap that is actually the total opposite of truth. The FMU works very well for low boost set ups, it's been proven 100's of times.

Money has nothing to do with reliability. You can purchase tons of parts for cheap new and used. Are you saying that being smart with your money is a bad thing? You must work on Wall Street...why not go waste some more money

WD

[WDRacing]

Are you going to make a thread here to document the build?Whoop Koshin for me. :P

Build thread will start any day now, just waiting on UPS so I can have pics in my first post.

yup im the s13 240sx king in the dfw area. hell probably texas. possibly the world muhuahahaha. i dont know anyone who owns as many as i do lol.

Track me down a S14 MAF

[jeff420]

Build thread will start any day now, just waiting on UPS so I can have pics in my first post.

Track me down a S14 MAF

ok, ill keep an eye out. i know i have some n60 and n62 mafs with pigtails. i generally dont deal in s14's but i know all the junkyards around dfw and trade scrap and junk cars for 240's and 240 parts lol.