New Garrett GTX2867r

[Mr.GT30]

Originally Posted by inis

what psi were you at?

18psi, full boost about 300 RPM sooner then GT2871, what EX a/r ? = 0.64
as far dyno graph is in ROAD RACE Engineering Dyno computer. when can i post it? not any time soon just because Im super busy during this time around. or you can stop by RRE and they will be happy to show you.

[slider2828]

and what RPM did full boost kick in? Dynograph would better explain ....

[the555car]

Which exhaust manifold? Which turbo housing and A/R? Extrude honed either, like CodyAce's setup?

cheers
-Evan

[LuckyX2]

Not to be mean, but 364hp? A gt2871 could do that no problem.

I fully appreciate you posting your results but can we get results from someone who pushed it a bit? In the meantime some info like psi and/or a dyno sheet would be great.

And where's boostfreak???

[goslow]

really wanting to see results from.

[cotbu]

Originally Posted by Mr.GT30

18psi, full boost about 300 RPM sooner then GT2871, what EX a/r ? = 0.64
as far dyno graph is in ROAD RACE Engineering Dyno computer. when can i post it? not any time soon just because Im super busy during this time around. or you can stop by RRE and they will be happy to show you.

If I or anyone was to take you at your word? It would mean that this turbo is not worth the upgrade from a gt2871r.64 56trim. Or your motor hasn't been tuned very well, etc... We need more data, we need better data. 300rpm sooner seems more like someone's read the brochure talk to me.

[huffandpuff00]

I searching Garrett's website and catalog for that damn special turbine housing so that I could get PSI (local shop) to order it direct from Garrett. Still never found the part #, but what I did find is a great price on the housing at a place in Kirkland, Washington called wideopentuning.com. This is the lowest I have seen the housing anywhere, only $265 + $20 shipping to me(Oregon)...

They also sell everything ATP but for cheaper if anyone needs flanges or whatnot!

[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

[ka-turbo]

idk were u got that info from, cause i also read it and theres no were, where it says they only sell it as a .72 a/r.......

i just recieved my turbo.....FINALLY as well...and i have a few question.
1. the back/exhaust turbine has the metal round flat piece behind the exhaust turbine...is it normal to have a little bit of play in that metal round flat piece?
2.did anyone else get that piece for the turbine housing to connect it to the turbo itself? or was that seperate....and how much does that cost?
3. did anyone ever fig out how i could delineate the exhaust housing on wether or not it is a 72 vs 64

[codyace]

[QUOTE=ka-turbo;4649674]
i just recieved my turbo.....FINALLY as well...and i have a few question.
1. the back/exhaust turbine has the metal round flat piece behind the exhaust turbine...is it normal to have a little bit of play in that metal round flat piece?[/quoote]

Yes, that is the seal. Once you get the housing on that will be tight as concrete.

Originally Posted by ka-turbo

2.did anyone else get that piece for the turbine housing to connect it to the turbo itself? or was that seperate....and how much does that cost?

In addition to the turbine housing you'll need the locking plates (3 of them) and the bolts.

Originally Posted by ka-turbo

3. did anyone ever fig out how i could delineate the exhaust housing on wether or not it is a 72 vs 64

The wheel is the same trim/size/type...the housings are what have different A/R .64/.86 being the traditional common Garrett housings (in T2 flange) and then the .72 ATP one.

[huffandpuff00]

Originally Posted by ka-turbo

3. did anyone ever fig out how i could delineate the exhaust housing on wether or not it is a 72 vs 64

The housing only comes in a .72, where did you see the .64 option?

I have that same atp t25-ewg-44 housing and it doesnt have any AR markings anywhere...

[ka-turbo]

Originally Posted by huffandpuff00

The housing only comes in a .72, where did you see the .64 option?

I have that same atp t25-ewg-44 housing and it doesnt have any AR markings anywhere...

ok well i got the same housing then... .72 but i asked the guy for .64 and well looks like i got the .72 but oh well im sure it will still spool really good and have a better top end...


KA-T, GTX soon to be up and running lol

[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

[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.