MadBoostedEvo

iTrader: (1)

I'm in the market of upgrading my turbo and have been looking at the Garrett GTX3071 for a while. BB is a must.

For the people that run/have ran this turbo, could you please give me your input. I don't want to hear about how good FB, MAP or CBRD is. I just want some facts and data on this specific turbo. All the threats that I find about these turbos don't provide much information.

R18eclipse

I have the bolt on gtx3071r. Great turbo for the street, great response and plenty of power for most. I never officially dynoed the car on the current set up, but on the Virtual dyno it made 440whp and which is where I ran out of pump on e85(dw65c, not hot wired)

jshimer23

I've got a GTX3076r with VD showing 430whp on 93. 28psi by 4000 in 3rd. It's a fun turbo. I'm interested to see what it'll do once I upgrade the cams.

spdracerut

iTrader: (2)

So you need to determine your goals and specify the supporting mods and fuel type. Also, are you going to build the engine?

IMO, I'd stick withe GTX3071. You can tweak your powerband for more low-end and response with the smaller 0.73 A/R turbine housing or more top-end with 0.94 A/R.

If you build a 2.2L engine, GTX3576 with the big A/R turbine housing.

For a pure street car, I'd do all the bolt-on's, cams, and the GTX3071 with the small A/R. But that's just me.

jshimer23

I wouldn't disagree with you at all. I picked up the 3076 cheap otherwise I would have just gone with the 3576 since the top end is better and spools about the same as the 3076. The 3071 is a great choice as well.

MadBoostedEvo

iTrader: (1)

As of right now, stock bottom end, stock head. Sticking with 93 octane for the time being.


I want a streetable turbo, with a fast response that will put me at or a little over the 400hp mark.

spdracerut

iTrader: (2)

I think cams are typically worth 20-30whp or so, give or take. I think they'd be really worthwhile with the 3076 to compliment the extra topend the 3076 has. If you can extended the revs with some upgraded springs and retainers, that' be really good I think.

spdracerut

iTrader: (2)

I would lean towards the GTX3071 with the 0.73 A/R for a few reasons.

The stock bottom end and stock head are basically going to limit your top end power. So you might as well maximize the area under the curve with the smaller A/R turbine housing (though you need to be mindful of peak torque to make sure you don't bend rods, though maybe not an issue with the limit of 93 octane). With intake, intercooler, downpipe (I like the AMS widemouth), cams, high flow cat, exhaust, it should do over 400whp on 93 octane.

If the car spent a lot of time on a road course, I'd give up the mid-range for the top end of the larger A/R turbine housing. It's about a 400-500rpm tradeoff between the two sizes.

R18eclipse

Gtx3071 with the smaller housing will do this no problem. I still have the stock cams in mine, but opted for e85 because our pump 91 isn't what your 93 is...

I was going to head to Roadrace and dyno the car but haven't had time and now that I am building a motor for the car I might not make it to RRE before I finish my new motor. I meant to put up some data on this turbo but other projects got in the way. I could take it to local dyno but I wanted to make the effort and go to RRE as I dynoed there when car was stock.

MadBoostedEvo

iTrader: (1)

Would you guys happen to have any info on the durability of the turbo?

Let's say we would compare the Garrett to FP. Same nature or not even close? The reason I say this is because I know FP are proven and they work. I personally want something different.

RallySport9

iTrader: (20)

I'm in the same situation as you op, debating between fp and gtx. Since I want really high numbers I'm probably going with the Garrett. Since they are more reliable and can produce higher numbers. If you just want results but not a drag car just go fp can't go wrong with either anyways. I could go on and on with specs and comparisons but no time to do 600 word write up lol.

R18eclipse

Garrett has been around for a long time producing some of the best turbos around and supply to the oem market. Not saying they aren't capable of failure but I haven't come across one yet.

PM me if you guys need a source for these turbos.

spdracerut

iTrader: (2)

Yup, this is the aftermarket side everyone is familiar with:
http://www.turbobygarrett.com/turbobygarrett/

This is the OEM side:
http://turbo.honeywell.com/

MadBoostedEvo

iTrader: (1)

From the looks of it, I think the GTX3071R will fulfill my needs.

R18eclipse

Right on, good choice

Not that it matters but that picture above is a gt wheel not a gtx
Here is a pic of mine


http://instagram.com/p/OZ_ZW1iELh/