DIY Turbo Discussion greddy on a 1.8? homebrew kit?
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Well, Turbonetics told me to fuk myself

 
Old 10-08-2009, 08:02 PM
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Default Well, Turbonetics told me to *** myself

Many of you read my previous thread about turbo failure.

Well, turbo netics stood by their product 1 time, not the 2nd. So *** them.

Anyway, looking at a gt2871r 472560-15

I want my dyno to look like it does now, better spool would be nice, but definitely want the same TQ/hp.

Thing is, I need a turbo that wont **** itself from shaft speed.

Running up to 20psi is no issue..

Opinions please..

Thanks for your help

PS- Turbonetics suck ***..
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Old 10-08-2009, 08:23 PM
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Try these guys
About_Billet.ews | www.billetturbochargers.com
their design is supposed to support higher shaft speeds and be more durable-although I've never used their turbos
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Old 10-08-2009, 08:34 PM
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I know that Turbonetics supported the South African Apartheid and kick puppies.
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Old 10-08-2009, 08:43 PM
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Borgwarner is where it's at...So i've heard at least.
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Old 10-08-2009, 09:21 PM
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not sure if you are interested but i may have a BW s200 should flow around 55lbs make you enough power. read upon it rather good turbos for the money compared to gt30xxr
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Old 10-08-2009, 09:30 PM
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I have that exact turbo, search my username for dyno results. 250tq at 4800rpm, 280whp at 6400rpm.
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Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
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Old 10-08-2009, 09:35 PM
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Originally Posted by Savington View Post
I have that exact turbo, search my username for dyno results. 250tq at 4800rpm, 280whp at 6400rpm.
he's going to bitch and moan about not getting target boost at idle.
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Old 10-08-2009, 10:38 PM
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buy new from ATP. several d00dz here can get discounts. spend the money.
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Old 10-08-2009, 10:55 PM
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I have to throw it in here. 3071. Owner says he gets to target boost 500 rpm sooner at sea level than he did in Colorado. The smaller numbers are from a bitch *** 2560.

Note this is on a 2.0 and is corrected. Shift the power a little to the left and knock off 15-20% and I bet that's how your car would perform. Pretty much even to, maybe a pinch more, than where you were.

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Old 10-08-2009, 11:02 PM
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Originally Posted by Ben View Post
I have to throw it in here. 3071. Owner says he gets to target boost 500 rpm sooner at sea level than he did in Colorado. The smaller numbers are from a bitch *** 2560.

Note this is on a 2.0 and is corrected. Shift the power a little to the left and knock off 15-20% and I bet that's how your car would perform. Pretty much even to, maybe a pinch more, than where you were.


please, recommend a 450whp turbo when the guy only wants 350whp and his emphasis is on spool.
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Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
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Old 10-08-2009, 11:07 PM
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Originally Posted by Savington View Post
I have that exact turbo, search my username for dyno results. 250tq at 4800rpm, 280whp at 6400rpm.
I was looking at your thread. That was at 14psi correct?
I want to see 300tq on a mustang. think 20psi will do that..

Originally Posted by hustler View Post
he's going to bitch and moan about not getting target boost at idle.
Hustler knows me all too well at this point. My issue isnt reaching power goals. Thats easy. Its when there is power.
My last dyno plot was fine. I just need a turbo to hold up and do the same.


Originally Posted by y8s View Post
buy new from ATP. several d00dz here can get discounts. spend the money.
I can get the gt2871r delivered for 1k even. Is that good??


What if the gt2871r came with a .48 a/r housing? Can that even happen??


What off the shelf turbo do you folks suggest?

I will be selling the engine, engine managment, and entire turbo set up in december
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Old 10-08-2009, 11:07 PM
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Originally Posted by Savington View Post
please, recommend a 450whp turbo when the guy only wants 350whp and his emphasis is on spool.
Way to look at the data, then say something really ******* stupid.
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Old 10-08-2009, 11:21 PM
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No fighting guys.

I just fear the 3071 because I only have a 1.8l

If it was a 2.0 or a 2.4 I would be all over the idea..

I am being told I can get a gt2871r with a .48 a/r on the hot side. That sounds good..
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Old 10-08-2009, 11:35 PM
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I thought you were running a 1.9.

I've been looking at T2 trims, but everything I see the 3071 gives up NOTHING to the 2871 and makes more power everywhere.

Keep in mind that chart is 2560 vs 3071. Note the very minimal difference in low end torque and then look what happens up top.
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Old 10-08-2009, 11:36 PM
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Originally Posted by Ben View Post
Way to look at the data, then say something really ******* stupid.
I'd love to hear you explain this. He wants low 300whp, and his emphasis is on spool, so you recommended a 30R - and I'm the stupid one?


Originally Posted by TURNS101 View Post

I am being told I can get a gt2871r with a .48 a/r on the hot side. That sounds good..
If by "good" you mean like "250whp MAX with horrible spool". You want a .64 at minimum. I'd actually give some serious thought to a .86 2860RS - a little more response and low-end than the 2871, and probably a better match if your endgame goal is 300wtq on a Mustang.
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Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
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Old 10-08-2009, 11:38 PM
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Makes sense Sav

This sucks. I just wish that turbo would hold up..
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Old 10-08-2009, 11:48 PM
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so you have this 2871
TurboByGarrett.com - Catalog

and this one
TurboByGarrett.com - Catalog

what about that smaller trim compressor wheel?? with a .64

Would that smaller trim help much?? compressor map looks like its right there for me. But will it spool quicker with a smaller inducer?
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Old 10-08-2009, 11:51 PM
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Originally Posted by Savington View Post
I'd actually give some serious thought to a .86 2860RS - a little more response and low-end than the 2871, and probably a better match if your endgame goal is 300wtq on a Mustang.
I doubt he'll like that:

He doesn't have a super-manifold either, so it will spin up later. He needs a custom job and he'll be happy. I say tiny AR on both housings, crazy-aggressive wheels, big EWG. He can make 300whp at 16-18psi though.
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Old 10-08-2009, 11:58 PM
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So big hustler, what do you think about that 2nd link to the smaller 2871r??

Compressor map looks decent.
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Old 10-08-2009, 11:59 PM
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Originally Posted by Savington View Post
I'd love to hear you explain this. He wants low 300whp, and his emphasis is on spool, so you recommended a 30R - and I'm the stupid one?
Lots of interesting reading.

Originally Posted by Jeremy
If I was only going for 300-350 I'd look at the 2871R and the 3071R. If the 2871R spooled faster it would be a bonus, but based on my experience with the 2860RS spooling basically the same as a 3071R on cars here I wouldn't put my money on it. (IIRC the 2860RS and 2871R have the same NS-111 9 blade turbine wheel, and my guess is that the 2871R is turning a bigger compressor wheel..)

The 3071 does on paper have a less restrictive hotside (it certainly looks bigger) and therefore better thermal management and possibly more timing advance potential, not to mention more airflow potential for future mods. I could not get any more timing with the 2860RS at 12 psi than I could on the same car with a 2560R. On other cars with the 3071 however I've been able to consistently get more advance at that level of boost.

When weiging the variables therefore for 300-400 rwhp I'd still go with the 3071. It makes for a very fast car when done right.
Originally Posted by Savington
I might be confused, but you're saying that you think the 2871 and the 3071 are going to have equal spool?

Which 3071R do you guys normally use? T25 or T3 turbine, which A/R, etc?
Originally Posted by Jeremy
I'm saying that my guess is that their spool is pretty comprable, and the 3071 is probably more efficient. Maybe someday I'll set a 2871 up here and I'll have a more complete information set by which to compare.

We use the T25 flanged 3071 so that it bolts into our FMII kits. .64AR turbine.
Originally Posted by Jeremy
Regarding response and the 3071, on our tired old 95 (basically a stock engine) pushing a whopping 160psi of compression hot, with our standard FMII kit & log manifold, I'm getting full mechanical base boost (10 psi, rock solid) just before 4000 RPM up here at the shop- 4700' elevation. I've driven many of the turbos on "the list" and I still think this one is the best option for a ~300-~450 rwhp Miata.
Also, if you remember Andy Floyd, he ran a 3271 on a 1.9, and hit 300whp and 270wtq on a mustang. Target boost of 16 psi was achieved at 4700 rpm.
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