anybody runnin a gt3076r turbo on their RB?

Discuss the RB20, RB25 and RB26 series engines.
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MOB240
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im thinking about going w this turbo for my future setup...im building my car for drift and street. from what i read this turbo spools @ 2500-3000rpm...anyways i was wondering if anybody has this turbo on their rb?


rbosacco
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yup! i have one and it will be on my car the end of this month. a buddy of mine is a machinist and is going to weld a external gate flange onto my spare manifold for me. i'll let you know how it turns out. i'd like to see close to 4 on pump but who knows, i'll see soon enough....

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Carl H
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some one lied to you when they said it would start spool at 2.5k.on a 25 you can expect full boost at around 3.4k on a .63 ar turbine housing, but that makes it unstreetable, so most go with the .86.if you are a true baller tho you will go for the atp twin entry .78 exh housing for ultimate response.i have a 3076r on my car, she sees full boost at 4k, but then again its a 20.

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Chaos the Xile
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Carl H wrote:some one lied to you when they said it would start spool at 2.5k.on a 25 you can expect full boost at around 3.4k on a .63 ar turbine housing, but that makes it unstreetable, so most go with the .86.if you are a true baller tho you will go for the atp twin entry .78 exh housing for ultimate response.i have a 3076r on my car, she sees full boost at 4k, but then again its a 20.
Carl do you have alink on that atp turbo your mentioning?

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MOB240
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so what spools faster than a gt3076r that is capable of 450-500hp range? or am i not gona find a fast spooling turbo w those kind of hp goals? just tryin to get info for future reference....

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DRIFTERx
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MOB240 wrote:im thinking about going w this turbo for my future setup...im building my car for drift and street. from what i read this turbo spools @ 2500-3000rpm...anyways i was wondering if anybody has this turbo on their rb?
i don't know about a gt3076R but i do know about a GTK 550 thats what i'm running.

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Kansei240sx
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I was thinking something along the lines of a GT3076R, I will be tracking the car, so ill be in my upper RPM range all day, that turbo if properly sized on the A/R should kick some ***.

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Carl H
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a gt3076r is a track turbo, proly not ideal for drift as if you fall down past spool point its hard to get the car back up into boost.i have full boost from 4k on but i rev to 8, so its ok...but i have to choose my shifts carefuly else she'll bog thru corners.its a fun turbo tho, on a 25 it would be alot more responsive.

Sil240
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MOB240- What about the GT3071R?Dont know what you have, but for my 20 it seems perfect.

http://www.turbobygarrett.com/...R.htm

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Bwana
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I'm planning on running a gt3071r on my 25. It will be primarily a street car, and my whp goals are conservative (300-350). I like earlier spool...

Sil240
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I mapped the GT3071R on my 20 and:

2,000 is just outside the surge line, and It'll be good all the way till 7,500


minivan_don
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look at the gt3012 .63 ar

Sil240
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Is that some custom turbo???It's not on the Garrett website?Where have you seen that turbo?http://www.turbobygarrett.com/....html

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MOB240
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i just want a turbo that will scare the $h1t out of any and every person that sits in my passenger seat lol what kind of turbo will do that?

Sil240
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Well seriously.How much HP do you want?What kinda driving you doing? (Street, Drag, AutoX, Road course etc....)

A Big turbo would do that, with the crazy lag until you suddenly hit boost and the Tach needle shoots raplidly towards the rev-limiter.

But then there's a guy who has a properly sized turbo and Kills you on the street and then you feel embarresed and tell him to check your Dyno sheets. And that on paper you will kill him any day on the highway. haha

Sorry went off on a imaginary tangent. lol

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MOB240
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im shooting for 450-500hp...im gonna run stock boost through the week and when i go to the track, im gonna crank it up...im building my car for mainly street and i wanna get a little into drifting. but for the most part, i just want a car that accelerates insanely fast!

Sil240
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Carl H wrote:some one lied to you when they said it would start spool at 2.5k.on a 25 you can expect full boost at around 3.4k on a .63 ar turbine housing, but that makes it unstreetable, so most go with the .86.if you are a true baller tho you will go for the atp twin entry .78 exh housing for ultimate response.i have a 3076r on my car, she sees full boost at 4k, but then again its a 20.
Hey Carl can you explain that??I would figure the .86 not to be streetable and the .63 to be streetable.Isn't the larger the A/r the latter the spool and vice versa?

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Carl H
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yes the ar is a determinant in spool time but realisticaly speaking if you get full boost (say 14psi) out of a 30r at 3.5k, its gonna break the tires loose and can send the car across a few lanes of traffic.when a large turbo hits, it tends to hit hard.

Sil240
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That's what I was thinking but dimissed it because I was also thinking quicker the spool the better.

Hey Can you check out this thread here:How do you think this will spool on my 20?

zerothread/239945T3/T04E 60 trim.60 a/r on th comp.63 a/r on the exhaust side.

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MOB240
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how about a gt3076r .82 a/r on the rb25? is there anyway to figure when it would start to spool? or is there not a way to estimate til i have the engine in the car?

Sil240
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Hope you have a pen, paper and a calculator handy.

http://www.rangerpowersports.com/tech/?p=132

Hit up the garrett website I posted earlier for the Compressor Map.

I believe that will tell you when you will hit what boost (Could be wrong though) and the compressor's effeciencey.

rbosacco
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Carl H wrote:yes the ar is a determinant in spool time but realisticaly speaking if you get full boost (say 14psi) out of a 30r at 3.5k, its gonna break the tires loose and can send the car across a few lanes of traffic.when a large turbo hits, it tends to hit hard.
so you are saying it would spool too fast? because that is what you said..... actually, if you had a problem with a turbo ramping up so fast that you had a problem controlling it, they make these things now, i think they call them boost controllers? i call ........

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Carl H
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i fail to see how a boost controler would raise the boost threshold.

mob240 - from what i remember from the huge 30r thread on SAU the .82 exh housing would see full boost round 3.8-4k on a 25...much nicer to drive on.

sil240 - 60 trim is gross, poorly matched to the 20. on paper its like YAY SURGE from 3k to 4k then it gets somewhat decent. the 57 trim wheel is much better matched to your 2.1 motor...

Sil240
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Can the gain be set to hold the wastegate open till later then hold it closed?

Carl- I posted in the thread I created t3/to4e instead of jacking this one.

thanks

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meet07
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what about people that like the bigger turbos. What would be the turbo of choice. Something like a t66 or so??


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