I think 300whp is the ceiling for the .86 tater. The gt2860rs and the 2871 have the same hot side.

I made similar #'s and hit 16psi at 4200rpm on begi's cast manifold on a dynodynamics box.


I don't know why the gt2860rs gets so much hate, its awesome on my car and i would not change the turbo in hindsight even on the old manifold.

Same hot side works in my benefit. It will spin the compressor quicker..

The 2 different compressor trims are my question now for the 2871.

The one map is very different than the other. I am wondering if the 48 trim spool faster.


Ben, thanks for all the solid posts bro..

So what if i jack that tater up to 20 psi on my ride??should be close to 300tq

yes, but I think that if you want 300whp on a real dyno you should get the 2871 or something else. 20psi/300whp is at the top of efficiency in this turbo. Then again, I may be there now at significantly less power than before with the new hot-parts.

I want 300+rwtq on the mustang again. My car is simply an animal when I have 310/313...

Can the dam 2671r with the .64 hot side do this???

I forgot to inform everyone why I am rushing this so much. I have to have a decision in the morning.

I have a Pro Am event on the 16th. I need this car dyno'd and completely up to Formula Drift Spec. I am close, but there is still a decent amount of time for preperation. After I have the turbo it has to go on. See what other shit I have to change. Then get it tuned. So alot of shit for me..

Thats where I am at right now. I didnt plan on a 2nd turbo shitting out..

Call a garrett engineer. I'm no engineer, but I really think you want a custom turbo with aggressive wheels and tiny housings.

2871 .64 is probably the simplest route to "tiny housings and aggressive wheels". but in this case I wouldn't call the housings tiny. this is a sub 2.0L motor remember.

I'm perfectly happy with my 2876 .64's ability to spool and have no question that it can produce 300 rwhp on a well tuned motor probably somewhere around 15 psi. sadly I have a high compression motor with a compromised tune so I will just wait for the next dyno day quietly now.

so wait the warranty does not cover it? that sounds illegal to me.. you sign a warranty and they dont want to take care of their bs

I think we all agree your tater is undersized for this mission. The 2871 is the next pop up as it shares hot size but takes the compressor to a bigger, newer gen wheel.

I fear the hotside is restrictive, and I think Jeremy's comments and observations are probably accurate. His statements were made after returning home from a paid trip to california where he tuned a 2871 car. We have seen some oddball turbos that don't live up fully to their compressor map potential, and the 2871 may be one of them. The 3071 appears to be a better combination of wheels.

I think Andy Floyd showed this to us a few years ago, but no one paid attention to him, because he did it so goofy. If you recall, he had a 93 chassis with a cheap built 95 motor. The turbo was a 3271. His engine management consisted of the stock 93 electronics + a high pressure fuel pump + a pressure regulator + 330 injectors + a bipes. Sumbitch made 300 whp on a mustang, and his motor ran for years.

CCCPull had a similar build in a NB, but I think he had a pissing match with Philip and was booted.

Can you imagine how much more power and better spool Andy would have made if he had a 99 head with o/s valves? With solid TEC engine management? With bad ass TEC ignition? With just a few psi more boost?

I think we need to spend more time looking at builds like what Andy, CCC, and Eliminator are doing. They are showing us that using small turbos is a mistake.

dude you are drifting i would get the 3071 and be done with it. I doubt the 28xx series can support the torque you want and besides on the case of spool when you drift you can keep the motor above 4k anyway so with alil practice you should be good to go. But im partial to antiquated DSM turbos so i might just be talking out of my ass here.

Turns, you need to remember that a .48 a/r on a Garrett turbo is much different than a .48 a/r on a T3. I think in order to match what you had before you will want a 2871 w/ a .64 a/r.

He's using a T3 flanged turbo....He is talking specifically about a 2871R with a T3 0.48ar housing. You can get them from ATP. 2+2=4

Jeff, do this. And don't forget to mention that you're a serious drifter running high level events so they don't think you're a drifttard.


I'm surprised I haven't seen any news reports about turbonetics employees with their faces punched in

I cant egt a phone number to a garrett tech. So far i have heard they dont want tot alk to anyone.
They want you talking to their distributors. ATP wont talk to you about turbo sizing on the phone for some bullshit reason.

At this point I am thinking of just getting a 2871 with a .62 a/r and just spinning it at 20psi and see what happens.

I dont have time to get a custom jobber

They covered it once, but not now.. Fuck them..

Yeah, that is a bit of a misconception, you are not always over 4k. I have discussed that here before. Even though I understand it looks like a big hi rpm burnout, it is much more involved and rpms do fluctuate alot.


I am trying to walk a better path. if this were a few years ago there would be a shit ton of china charger housing thrown through their shit box office windows..

You could try to PM JKav. He is a Garret Turbo Systems engineer after all.

and isn't he the father of the potato to boot?

so the warranty ends after they cover it once? something seems fishy here man. I wonder if you have a case for court.

call tial or a tial retailer. I bet you could call Twins Turbo and they'll talk to you, especially if you order a turbo through them. You can also try AMS, FP, or Alamo if you speak with Brice.

Thank you everyone.

i really appreciate all of your input. I will let you know what happens..