Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Im going to be changing my turbo setup this coming season as I dont like my setup this year, just to much power and not the power band I want. I want to make a fun car to drive around on the street, that has power everywhere.

It will be going in a Crx, d16 motor with forged internals and some headwork. Capable of probably pushing the turbo to its limits, or atleast the dsm 450's. @ 15-18psi

http://cgi.ebay.com/ebaymotors/GT28R...47274841QQrdZ1

Thats the turbo I want, its aparently ball bearing. Ive been searching on them on here and people say they spool incredibly quick but all those motors were b series and the actual garrett turbos. Not the SSAC knockoff's.

I also dont know much about the turbine sizing, some people were saying there was a .82 version made? What is this .60/.63 like?

Can anyone make any speculation on what the spool time will be like on a built d16 with VERY short charge piping via backdoor intercooler. Right now I dont see full boost til 5500 and it sucks.

Also, about the internal wastegate, I notice its mounted on the compressor housing, for the backdoor intercooler, Im going to have to clock that compressor housing so the outlet faces the front of the car and down. How would I mount the wastegate? Does it matter? I was hoping to keep it internally gated as I should be able to control it fairly easily right?

Looking for advise here

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Brand new Ball bearing for $390.00? It's got to be ching chow meow.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Totally knockoff. Have fun with it.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

i would LOVE to see if this turbo holds up. i would totally buy one if someone else was the guinea pig

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

my 60/63 didnt spool till about 4500 or so but itwasnt a ball bearing. this was on a ZC. SO eh, i dontk now

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

why not a t3 super 60? <<< but real garrett.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Boost would be around 3-3500.If that thing doesnt grenade and holds up it would be a great turbo.GT28 series is awesome for a D16 and if you want to buy a real one they are on sale at various places for 6-800.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

It's just a shame that those ball bearings are made of packed rice... delicious with soy sauce, yes, but it will most likely blow up... you should buy it and report back.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

They're not that stupid. Probably spray painted marbles :8

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

i wouldn't trust that shitty ass china made garbage... i rocked a ball bearing T28 turbo off of a JDM Silvia on my Z6 motor awhile back, it was a good turbo, I made 232Hp and 218tq on 12psi, stock internals, full spool between 3000-3500 RPM

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

HP Rating UP TO 575


lol

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

I know thats an overrated HP number, I dont expect to see more than 320 @ 15psi with my effiecient setup

I also know its a SSAC knockoff. Im running a 57 trim t3/t04E from them right now and I love it, held great, so I'll chance it again for the sake of insane spool

Yeah I personally just want this car for the street so I dont need crazy numbers, I havent lost a race with my huge turbo yet, I just dont like how it drives, I dont like how small my powerband is

So I was thinking since Im bored anyways this winter, I might aswell build my own manifold/downpipe/backdoor intercooler setup with a cheap ($300 cheap) SSAC ball bearing turbo

Was wonderring what I could get/do with it and if ther internal wastegate was any good to somehow allow me to hold a 15-17psi range, even a way to mock it with me clocking the compressor housing

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

thats right. chinese horsepower.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Any comments on the spool time I would get with this turbo?

There are a few different sizes I think of the :"disco potato" around, what is this .60/.63 like?

Ive run a t3 .60.63 before and thought the spool was quite slow, does the ball bearing and t25 housing make the huge difference?

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

The only spool time estimate you've gotten in this thread is what your current turbo should be spooling at. Steve's Y8 made the first psi at 3000 rpms, and 10 by 3500-3600 rpms, off of a plain jane T3/T04E w/ .63 AR turbine housing. You have some problem with mechanical or ignition timing, exhaust leak, etc.

Why don't you fix the perfectly good ---- you already have, instead of throwing money at a ching chong meow pile of ---- that will fail you?

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

I have a customer who installed a chinese BB GT25R on his civic.

the first week, he was all proud of his new setup outputs for the price and was starting to say that chinese turbos might be ok after all. I had nothing to say but congrats.

The second week, he reported that the turbo started whinning and then grenaded with no reason. Since he did not have the money to get the real GARRETT gt25R one that's worth 700$ more, he had to resort getting a t3/t4 which involved modifying his manifold, downpipe and oil system. So he ends up redoing his setup TWICE and in the end, he DID spend more money than if he had bought a Real GT25R in the first place but he doesn'T have one.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Maybe its because I have a 9:1 compression piston but the car is a dog off boost and when it hits to me its to late. I have no boost leaks anymore all of those are fixed. I just plain and simple dont like the powerband and I want a more fun street car. Which I believed this turbo Im looking at would accomplish

Im not asking about the integrity of the turbo. Im happy trying to use it. People said the same about my t04e and the .42/.48 i bought and they both worked flawless for me

Im curious to know if that size turbo will be perfect for what Im trying to accomplish and if boost can be regulated RELIABLY to 17or so psi and how I would accomplish that with internal wastegate

This is just a budget fun build and Ive had no problems with SSAC turbos and a 1/16th restrictor so please no more comments on that

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

If your motors not running good out of boost what makes you think it's going to run good with boost. somethings wrong their.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

1) CR does not effect spool time. Displacement and ignition timing, however, have a very large effect on spool time. It's a bit complex, but CR is more about peak VE and knock limit and where in the rpm band your power occurs vs cam profile. If anything, a high CR engine with everything else the same (ASSuming stock cam here) will make LESS power in the 3000 rpm range because the piston is generating more vacuum against a not-yet-open valve than a low CR setup would at that point; more pumping losses. Steve's Y8 was a stock block forged internal 9:1 engine, I repeat, it spooled fine.

2) Powerband off boost being sluggish is directly influenced by mechanical and ignition timing. Spool too late/too early is directly influenced by mechanical and ignition timing. Somehing is wrong, but it's not the turbo.

3) The turbo you are looking at will accomplish failure, and nothing else.


BTW, if you want to step up to a REAL baller bearing turbo then you need to get used to dissappointment. GT28RS will spool AT MOST 400 rpms sooner than journal bearing GT28E with the same wheels and ARs, but you should expect less. All the quick spooling hype around those turbos is they have a tiny turbine, duh. You want 1000 rpms quicker spool you'll only get it on the big mismatch hybrids like GT2540R, where the very large GT40 compressor rides a GT25 turbine + housing.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

I know my timing is a bit conservative but it isnt crazy, Im sure this is an average spool time for such a large turbo on a 1.6 non vtec. But I dont get full boost til about 5200-5300, which to me is to late for what I want out of the car

I really do appreciate your help JD

Do you have any opinions on how the internal wastegate would handle 16psi? could it hold it there steady?

I dont expect much as to the reliability of the turbo, but Id like to have a more fun daily driver where I dont have to rev out the car to make power, and then when the pwoer comes the tires just spin, Im only on azenis and shitty suspension.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

with my T3 60/63 i had alot of ignition retard on my accord, and i also had sizeable exhaust leaks pre-turbo, and i was still fully boosted by about 4000rpm or so, somthing is fubar with your setup.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

I just re-read, your current turbo is SSAC. None of the SSAC advertised specs are correct, plus they run too much wheel to housing clearance, and they spool later than the real thing. I assure you that the real thing doesn't spool so late... a real T04E with stage three turbine and .63 AR housing made 10 psi @ 2500 rpms on Trav-ASS' original 2.0/VTEC setup, 93dohcdelsol had a couple psi at 2500 with a stock geometry 1.8 LS/VTEC on the same turbo, Steve's Y8 spooled at 3000 and had ~7 psi by 3500 and 10+ before 4000, etc. All real Garrett turbos that come as advertised, function as advertised, and last quite a while.

I see no reason why their knockoff GT28RS is any different. Sad, really. :3

PS - Retarding ignition timing at WOT and for the first couple psi boost will spool the turbo quicker.

PPS - Internal wastegate should work pretty well, the Nissan boys do it all the time. Port the exit, and enlarge it a hair, I know the 6 psi gates on the GTi-Rs will run to 15-17 psi in practice. Electronic boost controllers tend to have a problem regulating boost that high over wastegate, make sure you have a mechanical unit.

PPPS - Make sure your current internal wastegate is sealing, no binds in the movement range, and that there is plenty of spring pressure holding it shut when off boost.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

I suppose my external wastegate could be fucked on this setup, its also an SSAC but worked just fine on my t3 .60/.63 setup

You say the internal wastegate on that turbo will hold great|? Im gonna have to clock the turbo as a runn a passenger side downpipe and want the comprssor to shoot right into a backdoor style intercooler. Would I be able to mock up a bracket to hold it properly and maintain that boost level? Or are they finicky with position?

I can port the actualy turbo wastegate housing and still allow it to seal when off boost?

I dont know what to expect from a new setup.

I was thinking of modding a chikira header into a top mount with a nice collector and big runners, but dont know what exactly what would do for flow.

I also wanna redo my charge piping as right now I have a 2.5" for the most part, but 3" where a cold air intake would be as I just reused an old intake and welded a BOV on it, so that probably isnt helping spool time either.

Would it be safe to go down to a 2 or 2.2.5" charge pipe setup?

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

TiAL knockoffs usually work fine. HKS knockoffs usually boost spike or are wedged open causing late spool. I'm pretty sure one of the HKS units that acted up while tuning worked fine for a while first. Which knockoff do you have?


I say that Garrett T25/T28 with the Nissan 5 bolt exit and associated flapper and actuator hold up great. You are talking cloned stuff... Joey promises nothing.


dsm.org has nice writeups on this.


I went from 2" ID non-IC charge pipe with .50/.48 T3 to 2.5" ID charge pipe with a backdoor 24X11X4" FMIC (~50% more internal volume than Precision 600 hp core) and .60/.63 T3. It took 500 rpms longer to spool on a stock LS, went from 2000 to 2500 rpms. Craptacular.

A lot of the stuff people tell you is a problem, isn't.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Im using the tial 35mm knockoff

Also, about the internal wastegate, obviously SSAC overates the power the turbos are good for, will the wastegate actually hold boost til 17psi? Or will modifications need to be made to get it there?

I'll check out dsm ,org

I was thinking of going with 2.25" piping all around, as that would defientily not bottle neck anything

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

WOW WHAT A GREAT TURBO...........i give it 2 weeks

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

lmao..

Oh ---- maybe I shouldent be laughing because im setting a SSAC turbo soon. ----!

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

I just love how it's got "TURBOCHARGER" printed on it. Like, maybe they wanted to be reminded what it was they were working on. Or maybe they didn't want to be confused and stack it together with rice flour...

Just like getting a car with a large lable that says, "CAR"... not very reassuring uh? :)

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

So knobodies has sucess with this turbo then eh

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Get it and get pics of the piston tops from glass damage.

They're marbles I tell you!

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

in my old setup i ran a t3/t04e 60/63 57 trim and it would start making a couple psi by 3k, a full 7psi by 3800 (wastegate setting) and then 25psi by 5500...sounds like you have something amiss if you are getting 17psi that late...i would get 18psi between like 45-4800...(i have dataloggs showing all) and reving to 8k it had plenty of powerband. (stock head stock cam as well) i could see spending 150-200 bucks on an ssauto turbo...but almost 400....meh...im sure you could find a used garret for a hundred to two hundred more....and it would last alot longer.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Get the real ----. I picked this up semi-used for $500
http://photos-342.ak.facebook.com/ip...306342_383.jpg

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Looks Chinese.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

That turbo is che cho paie, all the way.

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Yup, I just sifted the pics TI took at SEMA last year, and he has that exact unit photographed. With a $5000 buy in I believe he was quoted the T3 flavors at $97/per. Meow?

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

Rofl !!

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

yeah i believe that's a genuine garrett turbo.
I am not aware of knock offs with GARRETT written on them....
i have seen the chinese BB turbos. THey don'T read GARRETT...
but who knows.... MAybe they started doing it...

If this turbo was purchased for cheap on ebay, there's no magic: maybe it's got a Chinese center section though... with the garrett compressor cover of a blown garrett GT25R!!!
You can order the gt25R CHRA fro china for around 330$. MSRP from garrett for the real thing is 900$... One crooked guy gould make a living justn purchasing used GT turbos and repairing them that way, selling them as garrett turbos !!! THey will all fail of course but you do just like XSP does and you don'T honor your warranties and you're a happy camper!! (Mmmm... i just missed another opportunity to shut up!) :8

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

you havent raced any fast cars then :P

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

does anyone ever get these cheap turbos and rebuild them with good parts right away. seems like it would be cost effective

Re: Street Sleeper - GT28RS (SSAC) Is this turbo perfect?
 

I have a friend who bought a "GT34/40R" from SSAC that is exactly that. Garrett PN on the turbine matches up to Nismo T25 housing, has T04S cover with Garrett ground off, and CHRA bears no Garrett badge or place for one.

Have you ever seen a Garrett with that style script on it, BLAAST?