New Garrett GTX2867r

[BlackZenkiS14]

Originally Posted by codyace

My only issue with the OE style setup is the lack of trim on the compressor side. And lack of 3" inlet.

Right, that's my only hangup too. But I'm trying to figure out if its worth worrying about, or how much of a difference it would make, if noticeable at all.

[Mikester]

^^For what you do, my money is on 'not at all.' The OEM inlet is 2.5" IIRC, which tells me that a 3" inlet is not going to make a heap of difference.

[codyace]

Originally Posted by BlackZenkiS14

Right, that's my only hangup too. But I'm trying to figure out if its worth worrying about, or how much of a difference it would make, if noticeable at all.

The larger trim on the compressor side provides the ability to move more air.

The larger opening (least restriction) offers the ability to move the most air. Think of how they limit power on race cars? Inlet restrictors....

Now don't get me wrong some other factors are involved with this, but in our setups, where we're all running big boost, with big cams, and more efficient setups, you want to get the most air in, as fast a you can, and at the coldest temp you can. Larger inlet also provides for a smooth flowing intake, which helps as well. YOu don't want large pressure differences (pipe diameter changes) if you can avoid them as well.

[Mikester]

^^Cody, I understand that completely... But Kyle is only looking to make 400-ish and his current setup is more than capable without having to make any changes to his piping. His car is a daily as much as it is a track car. Don't get me wrong- what you are saying makes perfect sense as always... Just saying that for all intensive purposes, the bang for the buck (only my opinion) isn't there for him to revamp his piping... With his current mod list, a plug/play turbo upgrade and a new tune will give him max fun-factor & good flow characteristics. As far as the compressor 'trim' that is Greek to me lol... but again, Kyle has used the KISS concept in nearly everything he has done. End result for him is a very reliable, fun car that is easy to work on and a blast to drive (I've only ridden in it once and it was amazing!)... Why reinvent the wheel? Seems to me that a 3" inlet, extra trim etc. may be much more critical for a guy going for 500+... But again, I'm no expert... and Kyle, I hope you know I'm not trying to troll your thread to pieces- just putting my own, layman's perspective out here in hopes of maybe learning something myself.

Furthermore- once Kyle upgrades his turbine, I'd think that the best bang for his buck would be a tranny upgrade. The stock SR tranny will NOT last at this power level no matter how awesome of a driver he is; and no matter how meticulous his maintenance regimen. $.02 please

[koukistylejdm]

all right those gtx can eat a sr tranny in a matter of days if you hi rev and drop the clutch on 3rd gear..... :/

btw if someone want to save on the comp housing and turbine housing mine is for sale
gtx2867

[codyace]

I didn't consider the fact that he already had that OEM style compressour inlet/outlet, so that is a good point in regarding to keeping it simple and done. Would the trouble be worth the power? ...I know from 2871r and 28rs land that the 3" covers always made nicer curves and a little more. I'm not saying it's wrong, but I think it may be worth the justifiable cost and time. I wouldn't say it makes it any less or more reliable, or easier to work on though.


Transmission wise, I'd agree if banging gears. But knock on wood with a new clutch and better fluid, my box has lasted 3 years now, with thousands of track miles....

[BlackZenkiS14]

Originally Posted by codyace

I didn't consider the fact that he already had that OEM style compressour inlet/outlet, so that is a good point in regarding to keeping it simple and done. Would the trouble be worth the power? ...I know from 2871r and 28rs land that the 3" covers always made nicer curves and a little more. I'm not saying it's wrong, but I think it may be worth the justifiable cost and time. I wouldn't say it makes it any less or more reliable, or easier to work on though.


Transmission wise, I'd agree if banging gears. But knock on wood with a new clutch and better fluid, my box has lasted 3 years now, with thousands of track miles....

That's what Im hoping. Cody, can you PM some pics of your setup. The turbo side preferrably. Want to see how much TIG work will be needed if I went with the 3" compressor housing.

Same with with gear box, I'll probably need to start saving for a 350z setup I guess, and shortly after a built long block lol Its all down hill from here.

[Kingtal0n]

Originally Posted by codyace

I didn't consider the fact that he already had that OEM style compressour inlet/outlet, so that is a good point in regarding to keeping it simple and done. Would the trouble be worth the power? ...I know from 2871r and 28rs land that the 3" covers always made nicer curves and a little more. I'm not saying it's wrong, but I think it may be worth the justifiable cost and time. I wouldn't say it makes it any less or more reliable, or easier to work on though.


Transmission wise, I'd agree if banging gears. But knock on wood with a new clutch and better fluid, my box has lasted 3 years now, with thousands of track miles....

^^
1. pretty sure bigger compressor covers always better. almost always.
2. Its probably because you know how to drive. anyone can break a box with a stock engine in any car with desire.

Only thing left to point out is... some transmissions can fail (*cough S15) without poor driving. They have some kind of issue with a cir-clip that falls off with regular driving anywhere from 40,000-180,000km and destroys the box. Only reason i am not rocking one, and I still might.

[EsChassisLove]

Restrictive Air filters and inlet pipes can seriously harm turbos.

Probably not the baby 2867, but bigger turbos like 3071 and up, the turbos working harder to pull in air, and it can put pressure on the shaft. It can torque it enough to touch the blades to the housing.

[galant_x]

after mutch forth and back, i finaly mapped and dynoed my GTX 2867 setup.

My spec are:
Built bottom end.
Comp ratio 8,5:1.
Ported original exhaust manifold with external gate.
Ported orignial intake manifold with 60 mm TB
ARP topp bolts
MHG
VAG 2.0 tfsi coils
Standard intake boks
850cc JIC injectors
HKS 256 cams
+ pluss all the standard mods(exhaust, intercooler etc.)

love the feel of the turbo. Nice uppgrade over the GTR 2871

[d3x]

Here is mine, setup for stealth.

[BlackZenkiS14]

What made you decide to go with the bolt on style compressor housing?

And when are you planning on getting on a dyno?

[d3x]

Bolt on for simplicity (cost) and sleeper (cops). Nothing is funner than kicking someones butt with what looks like a stock engine.

Dyno tune booked for the 7th Feb and hoping to hold 18psi. (it's an s15 with nistune, z32 maf, tomei 740's, poncams and z32 box btw)

[BlackZenkiS14]

Originally Posted by d3x

Bolt on for simplicity (cost) and sleeper (cops). Nothing is funner than kicking someones butt with what looks like a stock engine.

Dyno tune booked for the 7th Feb and hoping to hold 18psi. (it's an s15 with nistune, z32 maf, tomei 740's, poncams and z32 box btw)

Very very similar to my setup, I'd be very excited to see the numbers and the power curve on that turbo with that housing.

[Def]

Originally Posted by galant_x

after mutch forth and back, i finaly mapped and dynoed my GTX 2867 setup.

My spec are:
Built bottom end.
Comp ratio 8,5:1.
Ported original exhaust manifold with external gate.
Ported orignial intake manifold with 60 mm TB
ARP topp bolts
MHG
VAG 2.0 tfsi coils
Standard intake boks
850cc JIC injectors
HKS 256 cams
+ pluss all the standard mods(exhaust, intercooler etc.)

love the feel of the turbo. Nice uppgrade over the GTR 2871

Nice graph, but why so much boost bleed off in the midrange? Doesn't look like the compressor was running out of flow when you really drop the boost. Plus that's a sheetload of boost in the midrange. You running race gas, or maybe E85 with the injectors static up top?


I wish these GT28 setups could do 450 rwhp without so much power roll off up high when the engine can flow (VE head, DET head doesn't have enough flow to do that much power on these turbos).

[galant_x]

Originally Posted by Def

Nice graph, but why so much boost bleed off in the midrange? Doesn't look like the compressor was running out of flow when you really drop the boost. Plus that's a sheetload of boost in the midrange. You running race gas, or maybe E85 with the injectors static up top?


I wish these GT28 setups could do 450 rwhp without so much power roll off up high when the engine can flow (VE head, DET head doesn't have enough flow to do that much power on these turbos).

my plan was to try 1,8-1,9 bar all to the redline, but this proved some what imposible with the EBC we had(AEM UEGO).

The car got an Vipec V44 pluginboard, som i am pluging the boost solonid in to this next time, and hope to get a more stabel boost line. like you said, i dont think the comp was running out of flow.

The car is mapped on euro 98 RON. i think this is the same as 95 fuel over in america.
There is still headrom in the injectors for more power, so it was just the EBC that was holding us back.
Still hoping for to break 430 WHP with some higher boost! The tuner is rather conservativ with the AFR, and aimed for 11,2 on boost.
Next time we will set target at 11,7. this should free some more power.

just got it done last night, so havent had time to drive the car to mutch, but it dosent seem to peek that high in the midrange on normal road driving.

[Def]

You should try a higher base wastegate spring pressure. You might be running into too high of a turbine inlet pressure that early in your rev range thus the gradual fall.

98 RON is like our 93 AKI pump fuel we get in many parts of the country. I'm surprised you didn't knock like crazy at 26 psi, but I suppose it's doable with low timing. What was your peak torque timing at like 4500-4700 RPM?

[galant_x]

Originally Posted by Def

You should try a higher base wastegate spring pressure. You might be running into too high of a turbine inlet pressure that early in your rev range thus the gradual fall.

98 RON is like our 93 AKI pump fuel we get in many parts of the country. I'm surprised you didn't knock like crazy at 26 psi, but I suppose it's doable with low timing. What was your peak torque timing at like 4500-4700 RPM?

hers my timming table.
The nummers might not do you any justice, as i dident ajust the CAS before the dyno :-p so it may be off 1 degree one way or the other.....

my also add that my combustion chamber have been reshaped. guess this may buy me some more timming. the picture is not my head, but same deal...

[codyace]

Originally Posted by galant_x

after mutch forth and back, i finaly mapped and dynoed my GTX 2867 setup.

My spec are:
Built bottom end.
Comp ratio 8,5:1.
Ported original exhaust manifold with external gate.
Ported orignial intake manifold with 60 mm TB
ARP topp bolts
MHG
VAG 2.0 tfsi coils
Standard intake boks
850cc JIC injectors
HKS 256 cams
+ pluss all the standard mods(exhaust, intercooler etc.)

love the feel of the turbo. Nice uppgrade over the GTR 2871

Great runnign setup for sure, how much boost again?

Love seeing guys trust the setup and run it...I always say these cars can run, but way to many change shit off course and have it foul up.

Originally Posted by Def

Nice graph, but why so much boost bleed off in the midrange? Doesn't look like the compressor was running out of flow when you really drop the boost. Plus that's a sheetload of boost in the midrange. You running race gas, or maybe E85 with the injectors static up top?


I wish these GT28 setups could do 450 rwhp without so much power roll off up high when the engine can flow (VE head, DET head doesn't have enough flow to do that much power on these turbos).

I totally agree. I'm sure you could get in the 425/450 whp with a shit ton of timing and on corn, but that's it.

[BlackZenkiS14]

Ok, so wastegate purchased, gonna try to get manifold welded up and thermal coated next week.

What retailer can get us the best deal on these turbos? I'll need it with the .64 T25 exhaust housing...

I got my 38mm MVS in, gonna get some stainless tube to extend the flange for the manifold. Ordering all new gaskets and hardware, going OEM on everything.

What oil restrictor do I want to use? I currently have a ball bearing S14 T28

[d3x]

Well just got back from the tune.

Made 316hp and 395nm at 18psi.

Power was a bit low maybe? Only revved to 7k rpm and the boost controller wasnt responding to gain and sensitivity. So if I can fix those bugs I should get a bit more response and maybe 325hp. Drives great though and impressed with the torque.

[cotbu]

316/325hp and 291tq at 18psi?
Tuner, dyno sheet, and no more excuses!

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

[mik5082]

Would a GTX2867 with a .64 housing spool quicker than a GTX2863 with a .86

[Rb26kouki]

Yes it will
Not to be mean but read the thread

[galant_x]

Originally Posted by mik5082

Would a GTX2867 with a .64 housing spool quicker than a GTX2863 with a .86

the 2863 with 0.86 AR is just so wrong.
Get the 2867 in 0.64.

[d3x]

Originally Posted by cotbu

316/325hp and 291tq at 18psi?
Tuner, dyno sheet, and no more excuses!

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

Are you can see the boost controller is doing a pretty average job. Keen to her all your thoughts....

[Def]

130 Nm of torque drop off in just 1000 RPM is not good. Are you still on stock cams? I should hope not, but obviously those need to be changed out to make over 320 rwhp and have a good top end powerband.

Boost controller needs some SERIOUS work as well.

[RalliartRsX]

@d3x, there seems to be some serious flow issues goin on with your setup. 17 psi by 5300 rpm is very telling

Also what is very odd is your peak torque and HP are not made where you are seeing peak boost but sometime after.

Something is definitely a-miss in that setup............

[d3x]

Its running poncams. Peak torque is more a result of timing and cams rather than boost so I think all thats fine. Im pretty sure the ebc is playing up so once sorted should bring me 17psi at 4k.

[Def]

You have bigger problems than that. I tuned a GT2871R .64 car with the usual cams and bolt-ons at only 14 psi and it was making near 330 rwhp.