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GT3076R so laggy ??

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Old Apr 3, 2007 | 05:27 PM
  #16  
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From: houston
Originally Posted by Jasil
You know this is a very good post. Everyone is always on the extreme. "Well, if you want to race your not going to do it at 3K rpms, duh!" and "Speed is only a downshift away!!" and for some this is true

Think of how often you drive part throttle or just ease into the gas in 5th and accelerate easily. It's not always about full throttle and racing someone and the great torque and throttle response of the stocker is one of the cars great attributes that is immediately missed when upgrading.

Bernardo, gave a great review of a 3065 and don't try to accelerate in 5th until 90mph.

I for one am all for big turbos and don't mind the lag most of the time, but good post to the OP and bigger isn't always better for everyone.
exactly, couldn't have said it better!
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Old Apr 3, 2007 | 05:27 PM
  #17  
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From: iN dI CaRiBbEaN
A lot of the tuners don't rate the GT3076r as a good turbo and I agree the spool feels almost identical to my GT35r but GT35r hits so much harder!! I recently upgraded from my RnR supplied PTE GT30r to a PTE GT35r.

From memory & my old dynograph my RnR Gt3076r kit hit full boost 24psi at 4800-4900rpm, in 3rd gear...never dynoed 4th before though.

Honestly, I would never use the GT3076r again from my experience and the reviews I've read...if I want a quick spooling turbo in that same power range it would be the PTE BB 50 trim for sure.
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Old Apr 3, 2007 | 05:32 PM
  #18  
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From: Bel Air, Maryland
Originally Posted by Whoosh
Not to be a ***** w/ ears. but what the h$ll has that got to do with anything?
The turbo is from Precision and we're talking about spool. They didn't make the turbo. Talk with many tuners around the country and all will tell you that the 3076 is not that great.
The manifold plays a part in spool. I dont know anything about RNR though..not sure what there manifolds look like. But its really wierd everytime i read about a car with RNR, its under powered or has problems...like what this guy is having.
What the hell is RNR doing wrong? Or is it all just a co-winky-dink?

And when i was talking to jeff from full race he said the gt30 was a very good turbo for pump and low boost, says it spools qiuick. But im sure he was running his manifold.
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Old Apr 3, 2007 | 06:33 PM
  #19  
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From: Spec Ops
WOT- it hits full boost at 5500rpm on any gears at anytime.

EVOline- yes the mannifold does play a role in the spool, but that much.
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Old Apr 3, 2007 | 06:36 PM
  #20  
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Get a FP Green.
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Old Apr 3, 2007 | 06:47 PM
  #21  
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Don't think it's the manifold as I am making decent power w/ a smaller turbo. Most people aren't happy w/ the lag of a 3076 and regret not going 3065/35R.
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Old Apr 3, 2007 | 06:51 PM
  #22  
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From: Nj
Originally Posted by vboy425
i have the RNR GT3076R turbo with the surge cover. it's so laggy. my evo always run strong with the evo 9 turbo on my 04 evo. it made 365whp on 91 octane and 385whp on 100 with 26psi. i have every mods you can possibly do the the car.
the turbo start to spool at liek 4000rpm and full spool at 5500rpm.
HKS 272/272 CAMS
magnus intake manifold
denso 720cc
walbro FP
MBC
3" DP
3" Text pipe
3" Exhaust
Greddy IC
IC pipings
i have more mods. but can't think of it right now.
RNR kits just do not perform well, just about all of there kits perform well except the 35R ones, they usually put funky hotsides on them and they just usually don't do well. A 3076 on a stock compression 2.0 should be making 20 psi by 4500 rpm latest in an early gear, mine makes 22 psi by 4k in 2nd, 3.8k in 3rd 3.6k in fourth and about 3300 rpms in 5th, but I am on a 2.3.

Scorke
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Old Apr 3, 2007 | 07:29 PM
  #23  
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From: Spec Ops
what's weird is that this turbo on my friend evo 9 with just dp, exhaust, 720 injectors and fuel pump. this thing hit full boost at 4300rpm
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Old Apr 3, 2007 | 09:27 PM
  #24  
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From: Spec Ops
anyone?
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Old Apr 3, 2007 | 09:35 PM
  #25  
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From: Alabaster, AL
Originally Posted by 240Z TwinTurbo
I remember Drifto posting dyno results of his 8 with a GT3076R and it made full boost (23psi) by 3800rpm in 4th gear. I think even after he optimized the cam gears it made full boost only a few hundred rpm later.
I get 23psi by 36-3700 on the street easy in 4th. 3800 is in third. I would bet the fellow asking the question has a leaking wastegate. My guess is that the valve seat for the Tial gate wasn't installed which allows lots of exhaust to just flow around the valve and make it laggy. Have seen this before on a Honda.
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Old Apr 3, 2007 | 09:51 PM
  #26  
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From: Work - New York, Alaska, Mexico or the Caribbean. -Home - Tx Hill Country
I've had both the 3076 and 35 and found the 3076 only spooled slightly quicker than the 35, about 100- 200 rpm. Both turbos like to run high boost and spooled better the more boost I ran. I was happy with the 3076, but would not go back after trying the 35.

I would look at running a higher rate spring in your waste gate. Though I have not tested it myself, I've been told that running the highest rate spring you can get away with for the boost you want to run will greatly improve spool up.
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Old Apr 3, 2007 | 10:32 PM
  #27  
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From: iN dI CaRiBbEaN
Originally Posted by vboy425
what's weird is that this turbo on my friend evo 9 with just dp, exhaust, 720 injectors and fuel pump. this thing hit full boost at 4300rpm
Maybe somethings wrong 'internally' with your car...you should check it out. Do a leakdown & check compression...makesure cam timing is in sync with crank timing and all is Ok. Hopefully it's not a bad set of main &/or rod bearings as this would affect the crankshaft and spool up & general performance of the engine.
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Old Apr 3, 2007 | 10:53 PM
  #28  
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From: 818
cam gears ...
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Old Apr 4, 2007 | 01:04 AM
  #29  
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boost leak check? maybe try swapping back to the stock intake manifold as well?
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Old Apr 4, 2007 | 02:22 AM
  #30  
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From: Spec Ops
Originally Posted by Drifto
I get 23psi by 36-3700 on the street easy in 4th. 3800 is in third. I would bet the fellow asking the question has a leaking wastegate. My guess is that the valve seat for the Tial gate wasn't installed which allows lots of exhaust to just flow around the valve and make it laggy. Have seen this before on a Honda.
i'm going to check it out tomorrow. everyone telling me the same ****. hopefully it will fix the problem

Originally Posted by EvO6-RS2
Maybe somethings wrong 'internally' with your car...you should check it out. Do a leakdown & check compression...makesure cam timing is in sync with crank timing and all is Ok. Hopefully it's not a bad set of main &/or rod bearings as this would affect the crankshaft and spool up & general performance of the engine.

i can assure you nothing is wrong internally with the engine. but i will do a boost leak test.


Originally Posted by boostin'
boost leak check? maybe try swapping back to the stock intake manifold as well?

oh hell no, lol. i'm swapping back to my evo 9 turbo befor i would even swap it back to stock intake manifold. lol

Last edited by vboy425; Apr 4, 2007 at 02:28 AM.
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