Mjalaly

Ok before i get hammered... yes I spent days looking through dynos and looked at a ton of post but noting really fits my application

so I am looking for some help. O save some time... i am an engineer with a good amount of turbo actuator design (so I can read compressor maps)

I need turbo suggestions for a quick spool (2500k reasonable?) for road race / autocross application and somewhere about 300hp and as much torque as possible. TThe car will weigh ~1200-1500lbs so I dont need a ton of power... for now.

I am in the "engine stage" of my car build so in am looking for suggestions on the following too. Injector size (need a new fuel rail?) and ECU

Right now I plan on running a walbro 255 inline pump (only) and adjustable FPR

Engine Specs
Block: stock

Exhaust: SPfab Log Manifold, custom 4 bolt or vband down pipe, tial 38mm with T3 flange

Top end:
head milled .025" (slight bump in compression)
b16 stock cams
AEM adjustable cam gears
Omni dual valve springs (should be good to 10k rpm, although there is no point in revving that high with these cams/internals)
Omni titanium retainers
Omni Flathead inconel valves (also a slight bump in compression)

Let me know what you guys think.

kyden

gt28rs. but i'm not sure why you bought a manifold before even choosing a turbo.

motoxxxman

the frame isn't even finish-welded.

but anyway, either a gt28rs, or a super-60 t3 (NOT the super-60 t4 or t3/t4!)

Mjalaly

I am very limited on room since the fuel tank sits close to the turbo. I used a T3/T04e for mock up and fit seeing how I would be somewhere in that ball park size wise.

Mjalaly

Yes it is... that is just an older pic. A lot more has been done since then. With the super-60 t3, does the .63 or .48 a/r work better on the b16?

Freemananana

iTrader: (3)

I thought the Super 60 was too big for what you want. I'd stay as small as possible to get the spool time you want. The super 60 will overshoot 300. The GT28RS is what I'd say would fit your application.

Mjalaly

man that GT28RS is expensive. The best pricing I could find was $1100. The Super 60 is half that price.

averyvm

iTrader: (1)

Yea that GT28RS is gonna be a pretty penny. Thats what ball bearings normally do to the price. You can get a nice journal bearing turbo but it wouldnt be as responsive.

averyvm

iTrader: (1)

Sick build by the way!

Freemananana

iTrader: (3)

Yup, that's pretty much the key point. Do you really want spooling at 2500 RPM?

I guess the T3 Super 60 is rated lower than I originally thought. It does fit your goals pretty nicely.

Mjalaly

I use to live in Tallahassee.

Yeah, i want to stay in the $800 range so a t3/t4 50 trim is probably going to be the ticket. Not sure how altitude will affect spool up though.

Mjalaly

Yeah i am use to saabs with a 6k red line so I will probably be fine with more lag.

maybe this is the better option for 300hp and spool time
http://www.himni-racing.com/turbocha...50-trim-450-hp

scottdh20

gt28rs is where its at for your goals...expensive but you want super fast spool...also keep your eyes pealed you may be able to find one used...or its smaller version of the gt28's that came on the greddy kits, dsm's, sr20's, etc... hell you might be able to find a used b-series greddy kit that would work nice, but you would be pushing it to get 275 to the wheels but it would spool fast.

the t28 off the Nissan gti-r pulsars flow enough to hit 300to the wheels and can be found usually under 400

or another option would be a evo 8/9 16g with a proper twinscroll manifold

SiRCiviC94

Power will fall off if you get a small pos Nissan turbo. 50 trim is fine

ownedevo10

Amazing build man. Id say go with the GT28RS. I know its more than you want to spend but Garrett makes some amazing ball bearing turbo's you def wont be disappointed. Other options like others have said is a stock Evo8/9 turbo. This could be an amazing turbo for you also. Quick spool and some room to add more power later. Im pretty much maxing my stock evo 8 turbo out at 375hp but I also have cams and some other stuff done to the car.

Mjalaly

cool now I just need injectors and figure out the computer.

TheShodan

iTrader: (14)

There are some great choices out here. GT2871R,GTX2863R,GTX2867R Or my favorite the "Rally Potato" GTX2860R. Even the GT2860RS is good, but for that weight, the GTX2860R is even nicer.

It all depends upon the budget. But these respond nicer than even the T3 Super 60 on the B16 with that camshaft.

Mjalaly

Those are nice... but out of my budget range. I would like to stick to the $700 -$800 range which allows me to spend a little more in other places.

TheShodan

iTrader: (14)

Then stick with the T3 Super 60. Won't get anything better on an internal actuator for that price. Me, I tend to spend a little more on turbocharger for longevity and durability. Especially with what you're running here.

A good friend of mine had a MAKO using EJ20 JDM engine. Wonderful stuff that was on the track.. Until he killed the turbo due to oil coking from lack of cooling in-between sessions. and those Super 60s don't come water cooled. Which is what you'll need for durability. .

motoxxxman

NO, you do NOT want a t3/t4. that was my entire point. NOT a t3/t4. you want a t28 or a t3. nothing t4 related. lol

t28 BB turbo would be your best bet most likely, but if you're on a budget you'd be better with the super 60 t3 (which as I said before is NOT a t3/t4). as for whether you'd want a .63 or a .48 turbine housing, that depends where you want full boost to start. the .63 will have you above 1psi around 2k rpms and around 8psi at around 3500-3700. the .48 housing will have you above 1psi pretty much just off idle, and at around 8psi around 2k rpms. I never suggest running a setup that'll spool that low though as it majorly lugs the motor and it can become extremely prone to knock even on a decent tune, as the pistons are simply travelling entirely too slow for the burn rate at that high of a load

motoxxxman

yeah they do, from the factory they do. mine is, and performs amazingly. straight out of a grand national.
the t3/t4 60-1 usually doesn't come water cooled though

motoxxxman

for you guys' viewing pleasure, pictured below is a super 60 t3 and a super 60-1 disco potato t3/t4. you can plainly see the differences.
super 60 t3 ~300hp (crazy underrated though)
super 60-1 t3/t4 ~550hp+
(notice the t3 is water cooled, the t3/t4 is not :p)

motoxxxman

also, the super 60 t3 came in two versions of exhaust housings in both .48 and .63: some had a standard flange like in the above picture and used a bolt-on internal wg adapter plate (I think I have a brand new one lying around somewhere if anyone wants to buy it), and others came with a solid housing with the internal wg built into it

Charlie Moua

iTrader: (3)

evo8/9 16g turbo, pretty darn durable, quick spool, super compact (dp, internal wg), $200-300ish in good condition.

should spool faster than all turbos listed above
bvtec motor, 300whp is doable around 16-20psi

am i missing something here?

Mjalaly

I need something without an internal gate and a 4 bolt flange. Also can a T3 Super 60 make around 300 hp??