New Garrett GTX2867r

[LuckyX2]

So I guess I won't be seeing how this turbo runs any time soon?

[Croustibat]

I will get some infos about one this week end. On a CA18DET.

[codyace]

Seems like much of the GTX stuff got preshipped by ATP, and the rest of the suppliers are still awaiting them to come in.

[jr_ss]

I have a GTX3076R going on a VVL motor.... I bought it from topspeedmotorsports back in Nov. They stock a limited amount of them or dropship from Garrett

[Loganpsd]

I also have a gtx3076r will b on a full-race manifold soon, I will post up some results as soon as I have some

[ka-turbo]

i bought this turbo and it seems that garret will only ship it and its kinda of back order, i however received my exhaust housing of .64 wich is wat i orderd....buut the box it came in says .72...wtf...soo im also wanting to know if this will push more boost sooner and all around better than the gt2871r

UPDATES!

[codyace]

After emailing with JWT, it seems that some of the initial GTX turbos had a machining issue, hence why they are on delay as well. I guess some of the compressor housings weren't right for the wheels, so I'm glad they noticed that now, not later.


In regard to the .72 housing, what does the turbine housing have stamped into it on the inlet? I'd disregard the box and check the housing

For Example:

[ka-turbo]

i do not have any stamping like that on the exhaust housing...i bought the upgraded externally gated exhaust housing from ATP through Endurancemotorsports when they were doing there sale, soo!?!?!?!?....i looked everywhere on the exhaust housing for it and i cannot find it

[LuckyX2]

The gated housing is a .72/.73AR so I'm not sure why you were expecting .64.

You can find that out in this thread:
http://zilvia.net/f/tech-talk/432611...ml#post4553333

[huffandpuff00]

still have to test fit but this is what route I am going

[di-devol]

How much clarance will there be with that setup?

[huffandpuff00]

I'm not sure yet, but the mvs is 3.7" apposed to the mvr being 4.1". I machined the mvs flange down 1/8". And ground the housing flange down flush.

I'm taking the housing to psi tomorrow to be welded and test fit, I'll put fitment pics up in the next week if possible.

[huffandpuff00]

here is the best reference to how much clearance there is now.




^This WG stands 4.854'" tall and is about 6" total from the turbo mounting plate.
The MVR WG is 4.171" tall and would be about 5.317" away from the turbo plate.

My MVS is 3.772" tall and sits just under 4.250" away from the plate.

[di-devol]

It looks like you'll make it, looks good man! I'll be at PSI on Tuesday at 4:30 for dyno run if you're around.

[huffandpuff00]

Yeah I hope it clears. I'll be at work at that time, but I'm excited to see your dyno results!

[codyace]

My turbo should be here Thursday or Friday, and go figure I'm going to be a musy mofugga Friday and Saturday. Hope to have it on Sunday, weld up the dump on Monday and then dyno by end of week.

GTX2867, .64 housing

[the555car]

Are you going to extrude hone the turbine housing? Or see how it compares, then do it?

cheers
-Evan

[LuckyX2]

Finally, someone is gonna come through with a dyno!
Glad it was codyace too, so we'll have some reliable comparisons to his go-to 2871 setup.
I wish I was back home in Bethlehem so I could bring my 240 by and see the dyno first hand...

Thanks codyace

[codyace]

Originally Posted by the555car

Are you going to extrude hone the turbine housing? Or see how it compares, then do it?

cheers
-Evan

I'll be reusing my same Extrude Honed turbine housing as it already has the wastegate flapper welded shut. Same housing as my 2871

Originally Posted by LuckyX2

Finally, someone is gonna come through with a dyno!
Glad it was codyace too, so we'll have some reliable comparisons to his go-to 2871 setup.
I wish I was back home in Bethlehem so I could bring my 240 by and see the dyno first hand...

Thanks codyace

Yea I'm hoping all goes as well with this all. It's just going to be a timing thing as I've got a ton of other things going on.

IMO I'm stoked for this, as it's a make it or break it kinda test. Same dyno, similar conditions, car is essentially the same too (only thing I changed were the coilpacks, the rest is exactly the same).

[the555car]

Right! Completely forgot about the housing interchangeability and that the GTX doesn't come with one. Looking forward to your results.

[Seraphim38]

hffandpuff...FYI I couldn't get that housing to clear my strut tower and had to run a 90 degree elbow like this (offered by ATP for $69, and you have to buy an additional v-band clamp for $45):



link: MVR 44mm Wastegate 90 Deg Elbow, 100% 304 Stainless : atpturbo.com

And, I had a custom dump tube routed (to the atmosphere). It's loud as @#$% and is tought to get used to. I asked my builder to route it into my downpipe so that it isn't so loud and he was resistant to it but will probably do it eventually. It just attracts too much attention when on boost (on the street).

[di-devol]

You are running a mvs gate as well and it hit?
Open dump wastegate is one of the best things ever.

[e1_griego]

I got mine



Not sure when it's going on, though. Trying to figure out a free night/weekend.

[codyace]

I can't believe how much they are charge for new V bands to fit them...that's robbery! Nice little piece though that they sell...but at 100 dollars (before shipping) for the parts, and then more for the housing, I'd have a hard time swallowing the cost over the manifold with a traditional flange.


And yes, recirculating that dump tube is a must. I can't stand the sound of an exhaust leak, even if it is controlled

[codyace]

What's the outlet? 2.25 or 2.5?

[e1_griego]

I thought it was 2" -- I haven't measured it, though.

[huffandpuff00]

@Seraphim38
Yeah I see that both you and the OP used the MVR(44mm) ewg, but I just figured if I used the shorter MVS(38mm) one I would be able to make it fit straight off the side. PSI should have the flange welded on today and ceramic coated tomorrow, so I think I should have a picture of it all installed next week.

Also I thought you need a smaller wg for more boost. I will be running 20lbs, so isn't the 38mm better at regulating the boost?

I figured the dump pipe would be loud, but I am running PBM straight pipe exhaust anyways and the cops here in Beaverton don't get too worked up about how loud cars are!

[g_mac530]

Originally Posted by codyace

then dyno by end of week.
GTX2867, .64 housing

Hey Cody, you going to strap the car down at Diehl Paving?? If you wouldn't mind I would like to stop by and see the car in action.

[codyace]

Originally Posted by huffandpuff00

@Seraphim38
Yeah I see that both you and the OP used the MVR(44mm) ewg, but I just figured if I used the shorter MVS(38mm) one I would be able to make it fit straight off the side. PSI should have the flange welded on today and ceramic coated tomorrow, so I think I should have a picture of it all installed next week.

Also I thought you need a smaller wg for more boost. I will be running 20lbs, so isn't the 38mm better at regulating the boost?

I figured the dump pipe would be loud, but I am running PBM straight pipe exhaust anyways and the cops here in Beaverton don't get too worked up about how loud cars are!

Wastegate sizing is funny. If you're running big boost you can get away with a smaller wastegate, as you're putting most energy through the turbo itself. If you're running smaller boost you would want a larger gate, as it helps vent more pressure and has more control.

In theory, a larger gate typically works better than a smaller gate on a normal street car that isn't running huge boost all the time...but in the same regard, that does not me the smaller gate won't work equally either.

Originally Posted by g_mac530

Hey Cody, you going to strap the car down at Diehl Paving?? If you wouldn't mind I would like to stop by and see the car in action.

I'm really fraekin hoping to. Deihl now rents the garage to another company so I'm still working the logistics out of it all. I'll let ya know.

[inopsey]

Originally Posted by codyace

Wastegate sizing is funny. If you're running big boost you can get away with a smaller wastegate, as you're putting most energy through the turbo itself. If you're running smaller boost you would want a larger gate, as it helps vent more pressure and has more control.

In theory, a larger gate typically works better than a smaller gate on a normal street car that isn't running huge boost all the time...but in the same regard, that does not me the smaller gate won't work equally either.






I'm really fraekin hoping to. Deihl now rents the garage to another company so I'm still working the logistics out of it all. I'll let ya know.

if you run too large of a wastegate you can drop a few psi when it opens. this is because a 38mm hole with the diaphragm open 1/8 of an inch will move much less air than a 44mm hole open the same 1/8 inch. if the wastegate diaphragm has a minimum movement of 1/8 of an inch; but will pass too much gas at that lift (38mm vs 44mm hole) to keep the boost level steady, the wastegate is too big. if the wastegate hole is too small boost will overshoot the target boost. this is where the high boost low boost small gate big gate come in.

just to add, i run a 38mm at 18 psi and still see a small drop in psi when the gate opens.