GT2871 USERS. SR motor

[Mile High Silvia]

anyone try this billet wheel? thinking about getting this


Billet Turbo Compressor Wheel Garrett GT2860RS 47 1 60 1 Trim 62 11 0 Blade | eBay

[ultimateirving]

Originally Posted by sil14zenki

they just opened a station 2 miles from my house so i have been really considering it. i already have a 340 pump. thinking of some id1000s and obviously tune. how much psi are you running? i know there are alot of positive things from running e85-more timing, more boost, better temps etc. just wondering if its really worth it with this turbo.

Running 20 psi on stock headgasket and cams. Been this way for about 2 years, but i had the knock off isis 3871, which is just a journal bearing version. Bought the Garrett 2871r last augustish and been loving this turbo

[Kingtal0n]

Originally Posted by ultimateirving

Running 20 psi on stock headgasket and cams. Been this way for about 2 years, but i had the knock off isis 3871, which is just a journal bearing version. Bought the Garrett 2871r last augustish and been loving this turbo

stock cams seriously hold down the VE on an SR20DET. Literally 70 horsepower worth of VE at 7,000RPM is missing. Pay $550 for a set of S3 cams, install on OEM springs, drop the boost to 18psi and your dollar to horsepower ratio is: $7.85 per horsepower.
I am bored

[jamg]

what's the best AEM tru boost setting?

i'm using a HKS actuator.

[xilovelsdx]

Actually have a 2871r so I'll post this here.



Got some new toys

[ultimateirving]

Originally Posted by Kingtal0n

stock cams seriously hold down the VE on an SR20DET. Literally 70 horsepower worth of VE at 7,000RPM is missing. Pay $550 for a set of S3 cams, install on OEM springs, drop the boost to 18psi and your dollar to horsepower ratio is: $7.85 per horsepower.
I am bored

Ty for the advice. $$ is the hold up.
Cams is my next upgrade for sure. But gotta wait til the time is right. She's just a garage queen now anyways.

[zurud]

Originally Posted by Kingtal0n

stock cams seriously hold down the VE on an SR20DET. Literally 70 horsepower worth of VE at 7,000RPM is missing. Pay $550 for a set of S3 cams, install on OEM springs, drop the boost to 18psi and your dollar to horsepower ratio is: $7.85 per horsepower.
I am bored

Bullshit. I saw all the dyno number here , stock and aftermarket cam produce the same number

[Dboyizmlg]

Originally Posted by ultimateirving

Ty for the advice. $$ is the hold up.
Cams is my next upgrade for sure. But gotta wait til the time is right. She's just a garage queen now anyways.

I'm curious on how much whp you made on the Dyno with stock cams?

Also, what Dyno was it tuned on?

I'm really looking at the GT2871r .64ar as my next turbo,
As of now I have t28 with tomei poncams, and tune on E85.
Was able to make 295whp/332lbft, on a conservative tune, on a Dyna pack dyno.

I need bigger turbo!

[derass]

Originally Posted by ultimateirving

Running 20 psi on stock headgasket and cams. Been this way for about 2 years

Do you track the car? If so, how often?

Originally Posted by Dboyizmlg

I'm really looking at the GT2871r .64ar as my next turbo,
As of now I have t28 with tomei poncams, and tune on E85.
Was able to make 295whp/332lbft, on a conservative tune, on a Dyna pack dyno.

I need bigger turbo!

Just make sure you have a metal head gasket and big enough injectors to take advantage of the increased flow of the GT2871R. Otherwise, you will just be sacrificing response.

[slideways2004]

Originally Posted by zurud

Bullshit. I saw all the dyno number here , stock and aftermarket cam produce the same number

[ultimateirving]

Originally Posted by Dboyizmlg

I'm curious on how much whp you made on the Dyno with stock cams?

Also, what Dyno was it tuned on?

I'm really looking at the GT2871r .64ar as my next turbo,
As of now I have t28 with tomei poncams, and tune on E85.
Was able to make 295whp/332lbft, on a conservative tune, on a Dyna pack dyno.

I need bigger turbo!

I just made 340 last month on a mobile dyno in the evening heat. And everyone was complaining of it reading low. No dyno tune just rom tune

[Dboyizmlg]

Originally Posted by ultimateirving

I just made 340 last month on a mobile dyno in the evening heat. And everyone was complaining of it reading low. No dyno tune just rom tune

340whp with stock cams is spot on, in my opinion.

Was that at 19-20psi?

Good numbers btw

[Dboyizmlg]

Buddy of mine got his S14 tuned yesterday.

Had it tuned by Koji Arai, at auto talent.

Mods list:
-fresh built bottom end (stock compression)
-Arp head studs
-APEX'i 1.1 metal HG
-tomei 260 cams (hydraulic)
-Freddy intake manifold
-GT2871r .64 A/R 52 trim
-E85

It made 366whp, 308tq at 16psi.
Clutch started to slip after 17psi, so we need to put a new one in for future re-tune.
This was on a Dynapack dyno.

I'm pretty sure when we go back for re-tune at 20psi it should make near 400whp.

[RurouniMidnight]

Was able to get my motor back in and dyno tuned by Enthalpy Saturday when he was in Houston.
S15 SR
Gt2871r .52 trim
stock cams
660cc injectors
Tomei headgasket
Z32 MAF
Tial 38mm mvs wastegate on cody ace manifold

Surprisingly after a little tweaking best run was 348/340 @20psi on Dyno jet. Pretty Stoked!

[Dboyizmlg]

Originally Posted by RurouniMidnight

Was able to get my motor back in and dyno tuned by Enthalpy Saturday when he was in Houston.
S15 SR
Gt2871r .52 trim
stock cams
660cc injectors
Tomei headgasket
Z32 MAF
Tial 38mm mvs wastegate on cody ace manifold

Surprisingly after a little tweaking best run was 348/340 @20psi on Dyno jet. Pretty Stoked!

Really nice! I love you're tq gain!

After 6k it drops really nasty, a pair of JWT S3 cams would be perfect. That way you get a nice consistent power band all the way to redline.

Looks good though.

[EsChassisLove]

Your stock cams are choking the top end.

JWT S3s would work great.

[s13 drifta]

Nice numbers with stock cams. Best bolt on turbo for sr20. I have one for sale if anyone is interested.

http://zilvia.net/f/showthread.php?t=574469

[RalliartRsX]

Yep, that huge falloff is very indicative of lack of flow (particualrly in the head).

In all honesty, a set of JWT S4 (NOT S3) would be more beneficial IMHO. The talk (from what I see) of it losing lower end torque is not entirely founded and even without degreeing makes power everywhere and more than the S3 cams.

Made 35+ WHP peak my setup and 20+WHP (using S4 cams on a T3/To4E) everywhere else over stock cams without degreeing

[cotbu]

Question how does enthalpy feel about your air fuel ratio? Did he get to see the dyno results?

Sent from my Highly Tuned Galaxy S3.4!!!

[RurouniMidnight]

Yes I plan on getting some cams and running E85 in the future.

Cotbu, we got the afrs straightened out to pretty consistent between 11.5 to 12, the ones shown were on the first few pulls.

[5280VertDET]

Originally Posted by Mile High Silvia

anyone try this billet wheel? thinking about getting this


Billet Turbo Compressor Wheel Garrett GT2860RS 47 1 60 1 Trim 62 11 0 Blade | eBay

I can't find a direct comparison of a billet wheel upgrade on the 2871r vs stock?

Can anyone let me know or show a dyno comparison?

Where does boost max out and kick in on the RPM band?

Originally Posted by 5280VertDET

I can't find a direct comparison of a billet wheel upgrade on the 2871r vs stock?

Can anyone let me know or show a dyno comparison?

Where does boost max out and kick in on the RPM band?

Bueller Bump

[cotbu]

You really can't improve on perfect, but they do try|

Sent from my Highly Tuned Galaxy S3.4!!!

[S13alldayyo]

Can I swap a .86 rear housing to a .64 and the other way around, I want to trade rear housings with my buddy but I don't know if the blades are smaller/ and or bigger Ect and will be a problem, if anyone has done this before, we both have a gt2871r just a .64 and a .84 rear


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[RurouniMidnight]

Yes the rear housings are interchangable.

[Dboyizmlg]

Got my GT2871r today!!!
Super stocked, just waiting to get a better clucth and extrude hone exhaust manifold!

[S13alldayyo]

Does anyone have a heat shield blanket on there gt2871r? I have ac and my line is going to be very close I would like to keep heat as low as possible next to the line


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[ultimateirving]

Originally Posted by S13alldayyo

Does anyone have a heat shield blanket on there gt2871r? I have ac and my line is going to be very close I would like to keep heat as low as possible next to the line


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It's good thinking but not really necessary if it's not touching, as that's the low pressure side and returning to the compressor

[S13alldayyo]

It's still going to enhance the ac system if I get the sorounding as cool as possible


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[aga]

Originally Posted by S13alldayyo

It's still going to enhance the ac system if I get the sorounding as cool as possible


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just wrap your ac hose with heat insulator (it's called armaflex here, i don't know over there)... it doesnt burn, and your piping will stay cool. you can wrap it more than one ply if you want. just use metal fixings, not plastic cable ties obviously. some stainless wire will do the job. we used to use it on intercooler hoses too, it really makes a difference.

[S13alldayyo]

I already wrapped the hose in that type of material, I just want to do it right the first time I can get a godspeed blanket for 40$ shipped and supposedly there blankets are awesome for the price plus I heat wrap the manifold and elbow

I also have to heat wrap the dump tube