What turbo should i run. Sr20det

[johann_240sx]

I have a freshly rebuilt sr20det with a full bottom end build the top end has been freshened up and im looking to get 350 to 400 whp out of it. I will also be running a AEM v.1 ecu. Im looking to see what kind of turbo i need to make my power goals i was thinking of getting the s15 bb turbo the 14411-91F00. Feel free to comment or messege me at 928-287-9532.

[2muchboost]

Tons of info here but why not run the 2871? Gives you a little wiggle room in case you wanted to up the power and its a proven turbo with a nice powerband across the board?

[zenkicpe]

GT2871RS ^

Def a better option for your power goals than the s15 GT2560R

[RB25GUY]

i mean greddy 18g or t518z would do the job well! shit will kick in like a freight train also!

[brndck]

you should buy my hks gt2540. quick spool and a step up from a s15 t28. excellent condition with no shaft play.
http://zilvia.net/f/showthread.php?t=608367

[turbo2nr]

precision 7675 with a 150wet shot to spool it.

[derass]

S15 is too small to hit 350whp

GT2871R, GTX28xx, BW 6258 and Tomei M7960 would be good choices among many, many others.

[silviaks2nr]

gt2876r .86

[2muchboost]

LMAO Drew...I was going to suggest a Borg Warner S480 with NOS but then resisted.

[Highway Riding]

Maybe a BW S200.
http://miketurboinc.com/products.php?product=BorgWarner-S200SX%252d58mm-Billet--Turbo

[johann_240sx]

Thanks guys im leaning more towards a gt2876r .86 any one have one for sale?

Sent from my SM-G925P using Tapatalk

[e1_griego]

A 2876 comes on like a light switch, esp the .86 version. I had the .64 version for a couple years and did not love it.

I have a GTX2867 now, much much better.

Go read the 2871 thread on here.

[Kingtal0n]

I have a gt2876r 86a/r unit on a full-race manifold stock location I could part with complete $2000 shipped 8,000-10,000 miles of use.

It isn't ideal, because you should be running a top mount, around a 54-64lb/min compressor, I dont care what brand. If on 93 octane engine, you do it with methanol/water and take advantage of the piston.

[Maximum]

hks gt ss dawg

[RalliartRsX]

A EFR 6758 will fit on a stock manifold and clear everything. All you will need is to v-band the downpipe (which in all honesty, I will NEVER go back to a 5 or 4 bolt turbine outlet, as it's one bolt and its all off. Turbo out in 40 mins start to finish, including bleading coolant, jacking the car up and removing all induction, coolant and oil lines)

No BOV or wastegate necessary and you can use silicone couplers and done. Cleans up all intercooler pipe, vacuum lines, etc.

EFRs pop up on Ebay all the time and cost about the same as a GT/GTX (and will be cheaper in the long run, as you are no required to get a BOV or wastegate for instance).

If you need a tutorial, let me know. I have a writeup of how to fit the B1 frame EFRs with a T2 flange to a stock manifold (or stock fitment bottom mount, be it Tomei, DOC, Full Race, etc)

The GTX or GT can't touch the EFR in transient and boost onset. The GTX wheel has lb/min and is capable of slightly higher figures (GTX2867 vs EFR 6758 for instance. But only a difference of about 10-30 HP on a pump setup. On E85, difference is negligible). The Garrett turbine wheels are a fairly outdated design. I went from a T3/T04E, to a T25, to a S15 T28 to a EFR 6258 bottom mount, to my current EFR 6758 top mount. Don't regret my move from Garrett to EFR.

[ixfxi]

s15 turbo is what i've chosen over the years because its cheap and good, but you'd be asking too much out of that turbo at those power levels. others have mentioned more modern turbos which you should consider, as long it fits your budget.

nice thing about s15 turbo is that its under 1k. all the others appear to be over 1k.

[Trinidrift3]

kinugawa td06 20g. lags a little more than the t2871, but it hits hard, pulls to redline, and can make more boost meaning more power

[derass]

The GTX or GT can't touch the EFR in transient and boost onset.

Why do you say this? If it were the 7163 with the mixed flow turbine I'd agree.

[RalliartRsX]

Why do you say this? If it were the 7163 with the mixed flow turbine I'd agree.

The turbine wheel on the GTX and GT series is a 20+ year old design. The redesigned (read: billet for the GTX) compressor wheel is the only update. However, a turbo's power capability is depicted by the turbine wheel. So in essence, same boost onset, transient response, etc, but with improved compressor efficiency. So what that equates to is, the GTX wheels produce more power than the comparable GT at the same boost. However, due to the archaic turbine wheel design, the true issue has not been addressed. As the saying goes, you can put lipstick on a pig, but it's still a pig..............

The 7163, 6758 and 6258 share the same turbine wheel design and back housing size and mounting plate (the name escapes me) dimensions. The only difference is the mixed flow wheel has extended tips o the 7163, so the inertia and spool between all three is very similar. In addition, the Gamma-Ti alloy wheel is LIGHT years better than the Garrett in terms of weight and efficiency. Yes, it's a little more brittle in theory, but all current Indy Cars are powered by EFR turbos, and I am sure they go through much greater shock loadings and heat cycle (not only in magnitude, but occurrence) than anything we could image on Zilvia (and all during a proper qualifying session, not even considering the race).

I have also ran 2 step launch control on mine and have destroyed 3 cats and the turbine wheel is still holding up.

The Garrett is just simply OLD technology, all said and done.

[blackmags91]

Just throwing it out there again that I have a 14411-91F00 in great condition for sale right now in Phoenix. I can meet you half way like Gila Bend or something.
Made 315whp on 13psi, could probably get you close to 350

[RalliartRsX]

Just throwing it out there again that I have a 14411-91F00 in great condition for sale right now in Phoenix. I can meet you half way like Gila Bend or something.
Made 315whp on 13psi, could probably get you close to 350


The S15 maxes at about 320 WHP. Anything more and it's (literally) blowing hot air and knock knock jokes become played out (if you get my drift)

I am not sure why you would recommend such a turbo, knowing full well it will NOT meet his goals............

Oh yea, thats right, because you want a sale...............:picardfp:

[blackmags91]

^ Yes, I sure do want a sale. How'd you manage to put that one together?

Look I simply offered a cheaper alternative, not to mention locally too.. Im not trying to scam the guy, im not trying to sell him something with bad intentions. And his "goals" still seem fairly unsettled.
I was straight forward and specific with what it was that I was offering to sell, and also what it may be capable of. I mean, you wanna give me shit about my post when the OP fucking lists the exact part number of the turbo that I am offering him in his original post for crying out loud!?

So, was my previous post/offer really such a crime? Or are you just the type of person that argues for the sake of arguing?
My offer stands.

[Tyler_240]

You could honestly get to your goal with any number of turbos...but how much boost you need to run to get there is ultimately what you need to consider.

You could hit your goal on a 3071R .63 A/R with 12psi, or 2871R .86 A/R at 16psi or 2860RS .64 A/R (Disco Potato) at 18psi...

Personally...I'd go BW EFR 6758 like one of the previous guys posted....it is incomparable to the Garrett turbos in response...

/my2cents

[ixfxi]

So, was my previous post/offer really such a crime? Or are you just the type of person that argues for the sake of arguing?
My offer stands.

no, not a crime. but no sense in talking about your used turbo publicly, take your sale to PM.


kinugawa td06 20g. lags a little more than the t2871, but it hits hard, pulls to redline, and can make more boost meaning more power

am i the only one who cringes when it comes to chinese turbos? yuck

[dorkidori_s13]

GT30r series turbo for reliable 350-400 numbers. GT28 and GT25 series are too small, you may get near 350 to the wheels out of the GT25/28 turbos, but youre going to be pushing them really hard where as you can run a lower amount of boost to achieve larger numbers on a GT30 series, just go with a lower A/R trim.

an S14/S15 GT28 can get you up around 320ish WHP, but youll be pushing the turbo past its efficiency range (youll need to push out 18-20psi) and it will start tapering back in boost in higher RPMs. i ran an S14 turbo on my last SR with a power FC DJ, aeromotive FPR, supra fuel pump, 1000cc top feed injectors and a top feed rail... stock bottom end and head running E85. we managed 308whp @ 16psi on a dynojet. added a ton of timing and la la la.

keep in mind that most people shoot for the stars with higher HP numbers on SRs only to realize that they cant keep their ass end from spinning. 300+whp is actually fairly nuts in an S13. if you can manage to keep the ass end down, you can pull out low 12s fairly easy (i went 13.2 on 3 fuel injectors... deatschwerks can kiss my ass).

[Malik]

holset turbos are a good option if your concerned about price... have to source a t3 manifold or a twin scroll though.

[Croustibat]

Just throwing it out there again that I have a 14411-91F00 in great condition for sale right now in Phoenix. I can meet you half way like Gila Bend or something.
Made 315whp on 13psi, could probably get you close to 350

LOL

No, you didn't. You can't do that at that pressure.