GT28RS, GT2871, GT2876 which one to get

[audiB7t]

I got a smoking deal on a low milage GT28RS i am going big turbo this fall and was wondering what your take on it is, do i stick with a GT28RS or do i step up and get a little bigger one.

heres the good part the plan is rods and a stroker kit this winter so that i can get the spool time down so that i can suto-x it without a long spool time .

so do i keep the GT28RS that i have or do i sell it (already have a buyer if i dont want it) and get a GT287X turbo?

oh this is a 2000 passat 1.8t and i know its an A4 forum but i thought i'd get your opinions as well you guys do alot more BT than the passat guys

[Kyle H]

What are your power goals?

The GT28RS will probably spool crazy fast on a stroked (that's 1.9l, correct?) engine. Since you're building the engine anyways, I'd go with at least the gt2871.

But what do I know, I'm on stock power still.

[Seerlah]

x2 on the stocker.

Yet you are correct. If he is already doing rods he might as well get at least a gt2871r. OP, you can even go 30 series if you wanted and your pockets agree

[kingtr]

Yeah, but low spool time on GT 30 (even at 1.9L) isnt likely... For auto-x I would think 28 would work well. With better internals might as well do 2871.

[aytheory]

Gt2871

[Seerlah]

Go with the gt2871r with the t3 flange .63 A/R. But from what I learned, spooling is basically the same with more power with the gt30 series. Same thing though, your pockets will be hurting.

FWIW, I plan on going gt3076r. I am completely stock and just starting. Saving up dough. I ordered a Milltek cat back exhaust last week and labreee high flow cat. After that I will swap rods and pistons. Then get my money up for the gt3076r set up. And when my engine decides to call it quits, get new built 2.0 motor from Mike-Hood. That seems my plan for now. Couple year process.

[mike-2ptzero]

Keep the GT28rs since you already have it. You might get a little more top end power with a GT2871r but that means spending money that you could spend on other things and you already have the rs in your hand.

[Poopie]

you'll have a solid 280 to the wheels on the rs. I say keep that.

[pipe7284]

for autox just keep the 28rs since you already have it. with the money you will be spending on a larger turbo you should upgrade suspension.

[audiB7t]

well the K03 is already maxed and the suspension is done. heres how the car sits right now

APR 2 program ECU 93 oct and stock
034 motorsports track density motor and tranny mounts
Stern snub mount
Stern poly tranny mount
Dahlback racing DV
test pipe
milltek exhaust
oil cooler
shine racing real street suspension
KW V2 coilovers - ya i got 2 suspensions one for show one for go
B&M short shifter
ASA 17" J5S rims with kumho MX tires (auto-x) ugly rims but got them used and cheap
Konig 17" rims with nitto tires (street)
custom lower tie bar with intergrated tranny mount
lightweight flywheel and stage 2 clutch
A8 brake upgrade with ceramic pads and hawk race pads
A6 strut bar
Braille 15lb battery

parts going in this weekend
Quaife LSD
AEB tranny (needed for quaife)
eurospec 6 puck cluth and LWFW
shine rear sway bar
3 bar MAP sensor
hopefully front mount intercooler as well

and then its time to really push the stock turbo and do some lemmiwinks tuning

[pipe7284]

ok so i see you have not high flow manifold. keep the 28rs and go with a high flow manifold, and bigger injectors.

[audiB7t]

currently looking for a manifold for the GT28RS its a full turbo no effin elim for me, injectors will be genesis from USRT, i have an AFPR, all i need is software most likely Tapp, manifold, downpipe, and lines

[djwimbo]

AutoX stick w/ the smaller turbo. It'll be more usable power. Even a 28RS will hold strong to redline 1.8-2.0L.

I'm on stock everything except TBE and software, at least in the power dept. and I'm having a blast in AutoX. I thought about a K04, but another member pointed out to me the benefit of getting the GTRS or 28RS instead, due to it's capabilities in AutoX.
NTM the K04 would probably be the death of my 162K connecting rods.

[AudiA4_20T]

Go with the gt2871r with the t3 flange .63 A/R. But from what I learned, spooling is basically the same with more power with the gt30 series. Same thing though, your pockets will be hurting.

FWIW, I plan on going gt3076r. I am completely stock and just starting. Saving up dough. I ordered a Milltek cat back exhaust last week and labreee high flow cat. After that I will swap rods and pistons. Then get my money up for the gt3076r set up. And when my engine decides to call it quits, get new built 2.0 motor from Mike-Hood. That seems my plan for now. Couple year process.

those are horrible first mods since they are getting dumped as soon as your turbo setup comes

[sean1.8t]

those are horrible first mods since they are getting dumped as soon as your turbo setup comes

i concur!

Seerlah, your future mods/pending ones, are all redundant!

you'll be spending $25,000+ to end up with a 2.0l 3076r setup. which if done right, can be had for less than $10,000

[Seerlah]

I am just learning about turbo set ups. So please bear with me. Guess I need to do more searching. But what I meant is get the new engine when my current one is done for. Like 225k+. Like to keep the B5 instead of getting a new car when it is time.

From what I am lead to believe, I think those mods are good for smoother ride for now. At first I wanted to get a used chipped ECU so I could have a spare to send in for tune, but I am cautious of toasting my turbo as I do not know the current condition of it so I was reluctant. As for the Milltek, I got it for $500 on classified. No, I did not spend $1200 for it. And I saw another user mating his set up to that exhaust, so how is that a waste? The thing that I know is getting dumped is the downpipe. Expected. But I could still use the exhaust as it has a 2.75" outlet. Or do I need larger?

Not to try and justify my ways, but I think many take my plans out of content. I basically want a gt3076r. I will do rods and pistons. Then my BAT set up. That's it. As another stated, about $10000. I meant to get a new engine from Mike when my current one calls it quits. Couple years for new engine meant like 8+ years when my engine really calls it quits like old people in nursing homes. When there is no coming back. Either that, rebuild current one to 2.0 or get a new car. But for my BAT set up, maybe 1 1/2 years if that.

Yeah, I know I need to search more. I will. Thanks for your peoples criticism. Appreciated. No sarcasm intended.

Edit: But to the OP, I was under the impression you had a high flow exhaust manifold and other things. Not that you just had the turbo. And you said you were doing rods, so that is why I said go with the gt2871r with the t3 flange and .63 A/R. From what I learned, that has very quick spool (20+psi before 4000rpm)and is smooth. And to be honest, I just read your posts after my initial one and it says you are looking for a manifold and your original post said that you are doing rods. So I still stand by my initial opinion. Go with the gt2871r. It is the same set up as the gt28rs. Maybe an extra $250 max altogether (for walbro in tank fuel pump and bigger compression housing).

[dougyfresh]

currently looking for a manifold for the GT28RS its a full turbo no effin elim for me, injectors will be genesis from USRT, i have an AFPR, all i need is software most likely Tapp, manifold, downpipe, and lines

You can run a treadstone manifold. It has a T3 or T25 flange.
http://treadstoneperformance.com/pro...Turbo+Manifold

[CO AVANT]

Or you can find people like Dougy here to sell a cooler apr3+ mani to you (T25)

[Sigma 3]

Does anybody have some dyno sheets of these different turbos. Im not concerned with peak power as much as power delivery and it would be helpful to see for those who want to aout x, vs, drag vs road race etc

TIA

[maxspeed]

ASA 17" J5S rims with kumho MX tires (auto-x) ugly rims but got them used and cheap

i have those in 18" and i dont think theyre ugly

[audiB7t]

i have those in 18" and i dont think theyre ugly

its not that they are ugly as in bad looking these are ugly cause the chrome is peeling, there covered in brake dust and pits they are ugly now, probably look good when they where new but they are ugly now.

[audiB7t]

Edit: But to the OP, I was under the impression you had a high flow exhaust manifold and other things. Not that you just had the turbo. And you said you were doing rods, so that is why I said go with the gt2871r with the t3 flange and .63 A/R. From what I learned, that has very quick spool (20+psi before 4000rpm)and is smooth. And to be honest, I just read your posts after my initial one and it says you are looking for a manifold and your original post said that you are doing rods. So I still stand by my initial opinion. Go with the gt2871r. It is the same set up as the gt28rs. Maybe an extra $500 max altogether (for walbro in tank fuel pump and bigger compression housing).

i need a manifold, injectors,downpipe, and software i have the GT28RS in hand. i think for now im going to stick with a GT28RS just to reduce in initial cost. and i think i found someone to make the manifold for just the cost of supplies. all stainless steel at that

for the cost its not worth selling the 28RS and getting a new 2871, im supposed to be saving money for a house but i keep finding cheap parts from friends who upgrade.

[djwimbo]

Does anybody have some dyno sheets of these different turbos. Im not concerned with peak power as much as power delivery and it would be helpful to see for those who want to aout x, vs, drag vs road race etc

TIA

There's a bunch of them here linky, thanks to Fourtitude.
I don't remember if we have and official dyno thread or not.

[Rosati]

Keep the 28RS , its a kick ass turbo

Not worth giving up the good deal you have on a great turbo for an extra few hp that probably wont even matter

I was getting 12-15lbs at 3k rpm when i had mine

[audiB7t]

good with a stroked motor it should be a little better spool time

my goals are 300whp on 93 oct i think its fairly doable with a stroked engine and a gt28rs. i would like 350 but that might be too much for autocross on a FWD

[salz2135]

do you have the .64 gt28rs?

[audiB7t]

not sure if its .64 how do i find out

[dougyfresh]

Does anybody have some dyno sheets of these different turbos. Im not concerned with peak power as much as power delivery and it would be helpful to see for those who want to aout x, vs, drag vs road race etc

TIA

http://audizine.com/forum/showthread.php?t=179590

[mike-2ptzero]

good with a stroked motor it should be a little better spool time

my goals are 300whp on 93 oct i think its fairly doable with a stroked engine and a gt28rs. i would like 350 but that might be too much for autocross on a FWD

Even at 300fwhp your going to have your hands full since that much power is going to light up the tires all the time. Just look for BoooostedA4's vids of his GTRS FWD A4. I hope you plan on running some very sticky tires.

[Sigma 3]

http://audizine.com/forum/showthread.php?t=179590

Thanks Doug. do the same priciples apply on the b5 regarding the difference between the GTRS and GT28rs ???

TIA

[mk4futurayellow]

GT3076R with Unitronic 630cc tune no maf, with no cells stock motor on water/meth

[djwimbo]

Even at 300fwhp your going to have your hands full since that much power is going to light up the tires all the time. Just look for BoooostedA4's vids of his GTRS FWD A4. I hope you plan on running some very sticky tires.

I wasn't going to tell him that. Even 250whp on a FWD is pushing the abilities of DOT tires, in an AutoX application. Drag racing is another story. Then again, with the way DOT slicks are coming, he might be able to pull something off.

[mike-2ptzero]

GT3076R with Unitronic 630cc tune no maf, with no cells stock motor on water/meth

That AFR is climbing pretty quick just before 7k rpm, even looks to hit 15:1 before the end of the run. Also looks like the car misfires right around 5700 rpm.

[Kyle H]

I think this is the right place to ask... GT28RS on stock internals, yay or nay? I've heard some say you don't need new rods until GT2871, and some say that you need them for the GT28RS, too.

[Seerlah]

I was told you can blow rods on a gt28rs, though it is not needed to swap rods when runing that turbo. You just can't boost as much as you would desire to. As for the gt2871r, same rule applies, but also depends on different factor. If you go with the .63 A/R you will have to swap rods. But if you go with the .82 A/R you won't have to swap rods.

[audiB7t]

I wasn't going to tell him that. Even 250whp on a FWD is pushing the abilities of DOT tires, in an AutoX application. Drag racing is another story. Then again, with the way DOT slicks are coming, he might be able to pull something off.

well thats going to be my biggest problem but hell if i can make the power then i will worry about putting it to the ground, widen the fenders stick a wider tire under it and they move on the slicks . or just burn the tires off and try to hook up and go.

[Seerlah]

Or get some really stiff suspension. But don't expect to run your car on the streets.

[audiB7t]

already got the stiff suspension, and vibrations from the track densisty mounts. its a blast on the street, i like it but others think its annoying and loud, oh well glad i got an A4 as a DD

[djwimbo]

I think this is the right place to ask... GT28RS on stock internals, yay or nay? I've heard some say you don't need new rods until GT2871, and some say that you need them for the GT28RS, too.

Once you hit 300whp then I'd start worrying. It's not that they can't fail in the 250-280 range, but it's less likely. Please don't quote me on this, as I do not have personal experience with it. That just seems to be the consensus of the more experienced. Over 300 has been done on stock internals, and still been reliable. Personally my car has 162K on it, at some point it's going to need a rebuild anyways.

FWIW, I'd put a set of rods in a K04 setup before I'd worry about the 28RS. They make strong torque spikes.

[audiB7t]

i plan on putting on the GT28RS on the stock motor getting that running dyno the car for a baseline, then yank the motor out stroke it and see exactly what i gained so that i know how much the spool time went down and any HP that i gained.