I'm ordering a Garrett gt3076rs and need to know some stuff

[jrb92se]

since i cant find a turbo im ordering a garrett gt3076rs. i was wondering what the trim, and .a/r should be ( i was told to get a .63 a/r for fast spool) and also any other specs i should know before i place the order. my car is a daily driver. it endures alot of mixed highway and city mileage, i dont want to gain to much lag and i want to get the most reliable set up possible. im going to go internal wastegate, i dont trust the ext. w/g's for daily driving for some reason, im keeping as much of my current setup as possible minus injectors.

[jrb92se]

can you fix the title for me i spelled order wrong? thx

[Shocker]

I'd go with the .82 I believe it is.. (the middle exhaust a/r) .63 will spool fast, but most likely will come on very violently. .82 will be more gradual with better top end flow.

[uber95]

You live in Florida and say you can't find a turbo? Try calling Evergreen Turbo. Speak to Charlie, he owns the shop and has been my turbo guy since 1989. He has a VAST amount of knowledge and is in central Florida. In adition he knows the RB's due to my car. He has been building turbos that are on race winning cars of all makes for nearly 2 decades. (800) 275-2531 or http://www.evergreenturbo.com

[240z4u]

I'd go with the .82 I believe it is.. (the middle exhaust a/r) .63 will spool fast, but most likely will come on very violently. .82 will be more gradual with better top end flow.

This is no joke, boost does come on very violently. I don't have that turbo, but have a big t3/t04e with a .63 AR.

Evan

[jrb92se]

i talked to charlie at evergreen he says he can build me a custom turbo to match the stock turbo in size and spec. he also recommended that i get a journal bearing turbo due to the fact that ball bearing turbos cant be rebuilt and are far more expensive. he says that he builds turbos for porche race cars all over the country and for cars that have run the 24 at daytona. he said that he can build a turbo that will not lose spool time and will out perfom the stock turbo.
Modified by jrb92se at 7:01 PM 2/6/2008

[BoostFab]

i talked to charlie at evergreen he says he can build me a custom turbo to match the stock turbo in size and spec. he also recommended that i get a journal bearing turbo due to the fact that ball bearing turbos cant be rebuilt and are far more expensive. he says that he builds turbos for porche race cars all over the country and for cars that have run the 24 at daytona. he said that he can build a turbo that will not lose spool time and will out perfom the stock turbo. Modified by jrb92se at 7:01 PM 2/6/2008

why the heck do you want to pay that much for a turbo in the stock spec and size ? might as well stick with the stock turbo. i say just get the off-the-shelf gt's turbo and save the extra cost from a custom built one.

also i dont know why you can't find any turbo, because most of the sponsors sells may type of turbos. enjuku to name one: http://storesense.megawebserve...s.bok

[uber95]

You don't know what was discussed as far as what he wants, don't start throwing stones at someone who you have no basis of knowledge as to price, work, or level of quality, warranty etc.. I'd be willing to bet that that GT series turbo costs ALOT more than what could be purchased from Evergreen for a comparable amount of performance.From the site you linked"Garrett GT3076R Turbocharger .63 or .82 A/R Available OUR PRICE: $1,249.99"...

WOW..that's GRIP of money for a turbo.......

[rbsileighty]

Search the Aussie forums for the HKS 3037

There is a guy on there that ran both .63 and .82 on a RB25 (it would be good to put which RB you are running in the thread... took a bit to see it was in your avatar) and preferred the .82 due to the "hit" of power others have spoken of before. He did an extensive amount of testing from what I remember...

It is a really old article... about 2002 or so I think.

I wouldn't run a journal bearing turbo if you are taking the time and money to upgrade...

[uber95]

I wouldn't run a journal bearing turbo if you are taking the time and money to upgrade...

Why not?

[rbsileighty]

A decent explanation is this:http://www.turbobygarrett.com/....html

Journals are not bad... but I wouldn't buy one... unless you were on a really tight budget and put a VG30ET turbo on a RB20 (I have one sitting around from my VG motor that I'll try on my RB20 one day... I'll let you know the results... I actually have a stock RB20 and RB25 turbo as well... and finally I also have my GT3071R... and access to a GT35R as well that I'll try... but I have to finish working on my house first unfortunately)

Hope that helps

[uber95]

Do some research into who Garrett went to for the R&D and prototype of "their" ball bearing center section. By buying into the marginal performance gains of a ball bearing center section and spending the 30% more they cost you are wasting your money. Buying a turbo charger that is unserviceable by conventional means is not a good idea.Excuse the thread jacking, but partially correct information or misinformation does more harm than good. Technical articles put up for public consumption by those that market the product being espoused are mostly no better than propaganda..

[rbsileighty]

Being a rhetorical jerk doesn't get you to far either.

So who did Garrett go to for "their" ball bearing center section? Obviously you have the answer... so just share

I know mitsu turbos have done well with journal bearing turbos... not saying it's not possible for them to be similar as I eluded to in my original post.

When I first thought about how to answer your post... I just tried to think of a reputable site that might explain it... basically being lazy b/c I hate rhetorical questions (which yours obviously was rhetorical)

I have no problem being wrong... but so far... I'm not

Please explain your servicing comment too... really not trying to be difficult on this one... I'm honestly curious what you mean by the incomplete statement of "Buying a turbo charger that is unserviceable by conventional means is not a good idea" ...truly not trying to be to much of a jerk... but you realize this statement is just as open ended and has equal potential to fall under "partially correct information or misinformation" as mine...

Just to cover myself... as not to be a hypocrite... I know you have to send in your core for a BB turbo for exchange for a new one... but where is the problem in this idea?
Modified by rbsileighty at 7:52 PM 2/8/2008

[BoostFab]

You don't know what was discussed as far as what he wants, don't start throwing stones at someone who you have no basis of knowledge as to price, work, or level of quality, warranty etc.. I'd be willing to bet that that GT series turbo costs ALOT more than what could be purchased from Evergreen for a comparable amount of performance.From the site you linked"Garrett GT3076R Turbocharger .63 or .82 A/R Available OUR PRICE: $1,249.99"...

WOW..that's GRIP of money for a turbo.......

dude chill out, why so quick to jump and defending "Evergreen". All I'm saying is why the he11 go pay a big amount of $ for a "stock size and stock turbo". As the original poster said he want the GT3076RS, and couldn't find a turbo anywhere. I was just simply saying they are being sold everywhere. And why bother paying extra for a custom built turbo while there are plenty off the shelf sizes to choose from. and again go find me a store that sells the GT3070R(S) for under $1k; don't even get me started. i don't buy a turbo now that is stock size and not thinking that i may want more power later, then have to buy another one as an upgrade, but that's just me.

on the other hand, journal bearings have been proving to provide high # reliably, if anyone to cut cost of the BB version. a gt30r will get you there for a 400hp goal, but then the T04E/57trim will get you there too, and you save $600. *cough* sc61. i'm a budget freak, so there i said it.

PS: we, here support our sponsors, as "Evergreen" would want to become one??!?!.
Modified by BoostsFed at 7:21 PM 2/8/2008

[jrb92se]

garrett ball bearing turbos cannot be rebuilt, you have to buy a complete chra ( bearing cartridge) and they cost almot as much as a new turbo. the guy from evergreen knows his sh**, i got better info from him on the subject then i did reading hours of posts. im not going to be spending more then 600 on the turbo he is building. he suggested that i get an external w/g but i may not becasue of the manifold issue, all the 450hp hks gtxxx turbos are internal. i dont want to have to get new plumbing, xat told me $650 for i/c pipes alone, so im trying to have the turbo made to match the stocker as closely as possible but still be able to push me over the 300whp mark, i want to make 325 on high boost. im probabley gonna get the turbo and injectors and install them myself then tow it to xat and have them make any repairs or adjustments it may need before they dyno it.

[jrb92se]

you guys think i should just bite the bullet buy a manifold and get a tial 38? xat says the ebay exhaust manifolds are ok, not great, but im worried about all the pcv valve, bov and vacuum lines that run into the stock intake/mafs hose, where do i reroute that stuff?? also those ebay manifolds are topmount, wont that interfere with the stock intanke manifold?

[Carl H]

point being is that highflowed turbos suck.

[Darius]

The standard Garrett 3076 internally gated on the stock exhaust manifold with a 1/4" spacer flange will get you into the 350-400 whp range. If you don't think this will quench your power goals, then I would suggest a GT35R with a .82 A/R exhaust housing with a little more lag. If that still doesn't do it, then you're in for a complete rebuild with an upper-middle frame to large frame turbo, external gate and exhaust manifold with new downpipe.

[Cameron]

for spooling time

ballbearing> Journal.

but some of the most durable turbos in the world are journal. Holset

GET AT ME...

[uber95]

I was out of town for a week, hence the delay in response time."rbsileighty"Thanks for calling me a "rhetorical jerk ", normally I wouldn't even justify someone with a response who resorts to name calling; but you're special. The answer to your question is a guy who has been in the turbo buisiness for over 40 years, whom I have met and does quite a bit of work still; despite his age, with the turbo shop I use. The conventional means I mentioned for repairing turbos is related to journal turbo's, not ball bearing center sections. I was under the assumption you knew, considering that you sound like you may know what you're talking about. I imagine that there is no "problem" sending in a ball bearing center section for an exchange if that's what you are inclined to do, but I wouldn't want to spend that kind of cash if I needed a rebuild.

"BoostsFed"

I was merely pointing out that you were not privy to the conversation between Charlie at Evergreen and jrb92se. You didn't know what was discussed. You sounded like you knew that he was going to spend an exorbitant amount of money on a custom turbo. My suggestion is call Charlie and see what he charges, then make statements on "off the shelf turbos" and what Evergreen will build you a turbo tailored to your needs would cost.

As to supporting "our" sponsors. I support who "I" choose. If I choose to mention a reputable shop whom I have done business with I can and will. As for the defense of Evergreen, I also will "jump" to his defense as he is beyond reproach when it comes to his practices and quality.

Charlie has been MY turbo shop MUCH longer than either you or this board has been discussing cars. Charlie has only advertised ONCE in the twenty years I have known him (and we have been good friends for the vast majority of that time). He has no need to advertise, his best advertisement is word of mouth as he does TOP QUALITY work and as jrb92se found out is a veritable fountain of knowledge and a genuinely nice guy and very very good at what he has been doing for over 20 years. He has had his own shop since 1989, and worked for "that guy" I mentioned who was tapped to do R&D work on the ball bearing CHRA.

Zenki, you are correct. A BB center section will spool faster, marginally so over a properly sized turbo. I personaly won't spend what it cost for a BB over a standard center section for a gain of 400- 800rpm.

I apologize for the lengthy response and the length of time it took to respond, but ATL and Van Halen were calling.....

[rbsileighty]

I guess I have to apologize for the "name calling"... after re-reading how you responded I think I inferred you were being rhetorical. I think the meat of my problem with your responses was the misinformation part...

You do realize that 4-800 RPM isn't a small gain correct? It's all about area under the curve... so why wouldn't you want to increase this area? I do have a S2000 in addition to my S13, so I'm familiar with peaky power... but that would be like me not wanting to lower my VTEC engagement 500rpm or so to maximize what it does have TQ wise with a $3-500 controller (have to re-tune fuel as well). For numbers... and example could be that you brought a spool up that generated 25FtLbs at 3400RPM instead of 3800... 25FtLbs at 3400 => ~16hp more for 400RPM assuming the TQ was flat for that 400RPM.

In higher boost situations I'd imagine the TQ gain would be more than 25FtLbs too...

Rebuilds are not common unless you're unlucky or racing competitively and on a budget... or you don't take care of your car. A good example are the stock 2nd version of the RB20 turbos (first were journal... I had one of those on an old RB) and RB25 turbos. Many people get their motor with 60k+ miles on them with working turbos... I don't see why you couldn't expect the same from an aftermarket unit. They even last and win Le Mans after 24hrs of abuse.

For me... it's worth the extra $5-600 for the added performance... $1100-1300 for 60k+ miles is pretty good too... so the rebuild costs should be noted... but not a holdback...

To say BB don't have improved technology over journal bearing turbos is misleading... I'll agree with it's an opinion I guess... because everything has a different value to everyone

I guess that's my $6.95 on this one...

[Carl H]

the trick to bb turbos is not how fast they spool up but the transient response as well as how they react to throttle modulation once under boost.

[rbsileighty]

Definitely a good point Carl... I noticed this in a apples to apples situation first hand when I switched from the original journal bearing RB20 turbo to the RB20 BB on my first motor when we put it in my friends S14.5...

[jrb92se]

i would get a garrett gtxx but i really dont want to have to get new everything to make it work , i cant afford to spend three grand on a turbo kit right now and my parents are on me to get my car out of their garage. i want to get a slightly bigger turbo but want to keep cost down with out sacrificing qaulity. are there any thread that explain what to do with all the plumbing conectted to that intake hose.

[Darius]

Install a catch can. There's really only one inlet after the MAF anyways. The rest of the smaller lines are for the wastegate actuator.

[jrb92se]

hes building an internal wastegate turbo now. i dont have a copmuter at home and only get to use my parents once awhile every few days sorry for the late reply. i want to know if an a/r of .48 was to small for the rb25? charley is building the turbo with an exhaust side with a .48 ar. hes say it is efficient till like 6000rpm and spools at 2300, but i was told that an ar .63 woyuld be good for my goal by z fever and XAT. charlEy (EVERGREEN) told me that the ar .48 will spool about 500rpm sooner then the ar .63 but the .63 will last 500rpm longer up top what would you guys think is better

[Carl H]

if you want nearly undrivable due to agressive boost delivery go with the .48 ar...and also dont want top end.even a .63 is small for a 25...but thats my opinion.

[Darius]

[jrb92se]

how much will i lose uptop with the 63? i was told that 63 is the way to go by z-fever and xat, those are pretty much the best shops i know of for this sort of thing and god knows im no expert.

[jrb92se]

also charly said if it does not perform to my standards i can send it back and get a different housing