RB25 GT3076R

[monkeyofdrift]

sup guys, I just got a garrett GT3076R .63A/R , the thing is it has a "B-cover"I have no clue/idea what that is, the turbo doesn't look like what in the pic at the website enjukuracing.com, the turbo has "precision turbo" written on it. I'm trying to find out what is the B-cover, would it effect performance???or is it just a cover nothing more?I'm trying to pump out 450~500hp from this turbo and in a RB25det.

Thanks for reading and any reply would help out.

[Carl H]

means its not a real gt30r.the proper gt3076r has the anti surge compressor cover...if it doesnt have that then its not a pure gt30r.its basicaly got a crappy compressor housing on an efficient wheel, sure it will make power but it wont be the best.i'll also mention that the .63ar exh housing will bring full boost on fast but it may hit so hard it literaly blows you off the road...you have been warned.

[monkeyofdrift]

the rear turbo housing says garrett but the front says precision turbo, am I'm getting riped off??? the turbo was for $1,225.99 (just turbo)

on the turbo it says, GT3076RLB-15 Turbo Turbine housing .63A/R

[Carl H]

take a pic of it man, i paid 1.1k for my 30r from phoenix turbo.

[monkeyofdrift]

[monkeyofdrift]

i'm saying is a precision turbo better then a reg. garrett turbo???or should I call them back and ask them to give me a garrett turbo.

This is what the picture looks like in the enjukuracing website.

[Carl H]

i would get the proper gt30r as pictured on enjuku's site.the turbo you have looks to have the 7 bladed compressor wheel which isnt the 'correct' gt30r compressor.and again you dont have the right compressor cover...it might be a gt30r CHRA with diffrent wheels.get your money back tho that isnt a gt3076r.

[monkeyofdrift]

the picture is for a .60 A/R you think it's because I got a .63 A/R that the covers different???

man I can't get a hold on them, they seem tobe at sema show, till nov.6

[BoostFab]

well you may have GT3076R non-antisurge version or the GT3076R-WG

[monkeyofdrift]

the picture is for a .60 A/R you think it's because I got a .63 A/R that the covers different???

[sil_eightyRPS13]

it is a GARRETT....the percision turbo's i hear r pretty good they just use there own castings for the housings for increased flow much like HKS...it looks more efficeint than the GARRTTE factory cast...especially the exhaust side i like how they've bored the turbine exit out...

[monkeyofdrift]

Thanks for helping out guys, I'm new to buying turbos but what's the difference between the anti surge and non-anti surge??? and is more fins on the wheel bad or good??? Thanks for the reply.

[Carl H]

sorry, wrong...that exh housing is simply the gt housing the one that is supposed to be on there.whatever you have there is not a gt30r/gt3076r simple as that, wrong compressor housing and wrong compressor wheel.call them up and raise hell...its not a pure gt3076r, take a look at garrett's website for yourself.http://www.turbobygarrett.comthe antisurge compresor cover is designed to help airflow into the turbo on spoolup to keep it from surging.

it is a GARRETT....the percision turbo's i hear r pretty good they just use there own castings for the housings for increased flow much like HKS...it looks more efficeint than the GARRTTE factory cast...especially the exhaust side i like how they've bored the turbine exit out...

[Shocker]

thats BC percision takes garrett based turbos and puts their own compressor housings on, then re-sells them. its still a 30r as far as in the internal make up is concerned and is DBB. I talked to a precision dealer about this a few weekends ago at NOPI, its still a garrett turbo.

[IronMonkey]

Precision turbos just uses different housings. I have the GT35r with an E cover from precision as well. Most b/e covers arent antisurge. Antisurge is needed when you get a small exhaust housing when used with a big compressor. I didnt go with the S housings because of fitments on the HKS manifold. I think you should be all right!

[Carl H]

then why does that turbo have a 7 blade turbine when a real gt30r has 6?

[Shocker]

why doesnt he just call Precision.. after all it is their turbo, im sure they can answer any question he might have... They might change compressor wheels as well.

[monkeyofdrift]

this is the website and this was the turbo I was suppose to get, false pic's???

http://storesense.megawebserve...l.bok

I'm just saying is this turbo(precision) better then what's in the pic???(garrett) the pic has 6 fins, and in the back has 10, the one they sent me has 7 fins, and 11 in the back, damn I can't get a hold of them, their in sema. lol if they were selling Precision turbo's why not list it as Precision and not garrett. I'm at a lost here I ordered a Garrett GT3076R .63A/R and got this. I never even herd of precision turbos, I know that they are in the garrett website, but garrett don't sell their own turbos other sites do. I'll call precicion and see what's the deal with this turbo, is it as good as the garrett's GT3076R (having a feeling that they would lie and say it's better) I'll call them and post back .

they named this turbo as GT3076RLB-15 and ATPturbo sells thier as GT3076RWG.

[Carl H]

precison does make good turbos but if you paid for what was in that pic and you didnt get it, then its false advertising simple as that.get a proper gt30r and be done with it, some ppl might say what you have is equivalent to a pure 30r but the antisurge compressor cover is a 200 item should you choose to upgrade...

[Darius]

Can someone explain to me how the anti-surge compressor housing works exactly?

[monkeyofdrift]

okays , I just got off the phone with preision turbo, and they said the turbo (preision one) is a GT3076R Hybrid, meaning they used Garrett's GT3076R and upgraded, the preision's GT30R HP rating is: 550 flywheel hp/ 468rwhp. the cover they gave me was a, inlet 2.625 and outlet 1.75 (no clue, you got me) I asked him about the different between the Garrett's and theirs and they saided it's the same turbo, it's a garrett, just custom to your needs (fast spooling) and the thing with anti-surge vs non anti-surge, it have something todo with small turbo's have high compression wheels on small liter engines, that's non anti-surge and anti-surge has something todo with the BOV (i'm like what?) so in the end with the anti and non-anti, makes no differents (what the rep told me) but still, I do like what the garrett's turbo cover looks like, but in the end performance comes 1st.

well knowing this I did go to their website and saw that the fastest drag cars have their turbos.

lol thank god it's still a dual ball bearing turbo. but i'll call enjukuracing and ask what's the deal. (when they get back from sema)also with the extra fins the rep says it's better.
Modified by monkeyofdrift at 10:28 AM 11/1/2006

[monkeyofdrift]

my bad, double posted , thought i click on edit.

well knowing this I did go to their website and saw that the fastest drag cars have their turbos.
Modified by monkeyofdrift at 11:08 AM 11/1/2006

[Carl H]

there was quite a large thread on the 'gt30r' and its variants on SAU...some variants are good others are not but nothing beats a virgin gt3076r turbo.

[IronMonkey]

Can someone explain to me how the anti-surge compressor housing works exactly?

Like I said, its when you have a big compressor and small turbine (exhaust) side. You are pushing excess volume of air that the small hotside cannot get rid of quick enough. Therefore, it pushes it back to the compressor,the opposite direction of the turbo's rotation. This will cause the turbo to drop pressure and has to build up again. The anitsurge housing help move the excess air from "hammering" the compressor.

The downside to this is a little slower in boost buildup.

[monkeyofdrift]

does anyone know the deal with the extra fin on the wheel??? more fin bad? more lag?

[djhex36]

more fins = different compressor wheel, the wheel pictured from the garret turbo has 6 blades meaning a different compressor wheel, the one youhave has 7, you may want to ask garrett and cross reference that with enjuku about the compressor blades according to w/e garrett tells you what you have.

[Carl H]

more fins should make it 'spool' faster on the turbine side of things due to more surface area for the exh gas to cover but it will hinder top end power.same goes for the compressor intialy it should move more air at lower speeds but as the turbine spins faster its efficency will drop.

[monkeyofdrift]

well I decided to keep the precision turbo talked to the turbo tech at horsepowerfreaks (they sell Garrett,Greddy,Precision,HKS,etc.,) he told me between the Garrett and Precision turbos,

"Both of those turbos are almost exactly the same. The difference is that theprecision will come with precision manufactured housings. They are marginallyhigher performing units and you should see efficiency gains of around 5-10%."

Thats all, I mean if, it takes me to my HP goals(450~500hp) it's all good, and plus I don't know Garrett's number

So it looks like i'm all set, now I'm just waiting on the fuel injectors, PE 850cc, crossing my fingers, hoping those injectors would be okay tuning the 850cc with power fc, hope that's okay.

well thanks everybody for helping me out, Thanks!!!

[Darius]

Holy! Why are you using 850cc injectors? They are plenty plenty big if you're only shooting for 450-500 hp with gasoline. You could easily use 650 or 700cc injectors.

[monkeyofdrift]

Holy! Why are you using 850cc injectors? They are plenty plenty big if you're only shooting for 450-500 hp with gasoline. You could easily use 650 or 700cc injectors.

.

yea, but the place I order everything from only had 550cc and 850cc from PE, so everyone on the forum told me to go with the 850cc with power FC then I should be find. I hope the aftermarket AFPR would help it out too.What's the worst that can happen?