Rb25 Gt2876 15Psi At 4800?

[D_Stirls]

A GT2876 isn't a cropped GT30 wheel it uses the NS111 GT28 wheel with an old school 76mm compressor. They are a bollocks turbo as they are a complete missmatch between the turbine and compressor sides.

They aren't a new turbo they have been around for years but they aren't widely used as they are an under performing turbo. They are in effect the same CHRA as a HKS GT2540.

There are applications where they do work well, for instance if you are running in a class where you have to run a restrictor before your turbo then this takes a bit of the load of the compressor due the less air hitting the wheel and therefore the small turbine has a chance of driving the compressor that is ~23mm bigger than it is.

[Stargate]

There are applications where they do work well, for instance if you are running in a class where you have to run a restrictor before your turbo then this takes a bit of the load of the compressor due the less air hitting the wheel and therefore the small turbine has a chance of driving the compressor that is ~23mm bigger than it is.

I wonuldn't so much class it as a HUGE restriction but the standard afm is only 3", whereas my intake pipe is 4".

Edited February 1, 2011 by Stargate

[D_Stirls]

no i'm talking motorsport classes where they make forced inducted cars run a restrictor, say 38mm not talking about regular street cars.

From what Garrett write on their info page for this turbo they make it pretty clear that it isn't intended for general performance use.

[Stargate]

no i'm talking motorsport classes where they make forced inducted cars run a restrictor, say 38mm not talking about regular street cars.

From what Garrett write on their info page for this turbo they make it pretty clear that it isn't intended for general performance use.

ohk. I did absolutely no research when i bought the turbo. I simply went down to mtq and told them i want a large turbo to suit an sr20. I then sold the sr20 I had and got the 33, got a new turbine housing and off I went...

[Adriano]

What you need to know is what exhaust wheel dimensions the exhaust housing they sold you suit, if it is to suit a bigger wheel, then there is the problem.

[BLITZ-26]

hmm terrible turbo i have a friend that tried on an a CA18 made good power 160 somthing KW on 8psi, 180 something on 14psi and 190 on 19 psi terrible for performance and laggy as all hell!

[STATUS]

they are a dog turbo and really inefficient, need at least 18-20psi to do anything special even then they are still laggy. I will look up the dyno graphs i have of them at work. It is the garret equiv of a hks GT2540 but without the nice hks rear (which is still crap when compared to later offerings)

[Stargate]

they are a dog turbo and really inefficient, need at least 18-20psi to do anything special even then they are still laggy.

I did notice that when driving with the actuator disconnected. It still spools the same to around 15psi, but once it hits around 18 at around 5k, it jumps really quickly to around 25-28psi.

[Stargate]

Well, after having got around 14k work done a t a performance shop, Im now making 264rwkw with the same turbo with a tial .64 housing, 6boost manifold, fmic, vipec ecu, 044 and a few other bits and peices.

torque curve is completely different, with it coming onto 15psi at around 3400, holding 15psi through to 8500. torque change from ~3800 - 7800 is virually no change (almost flat line). Still need to get bigger injectors (apparently 580cc dont cut it) and most likely a second 044 for 20+ psi. 264 cams with a bit of timing and of course the screamer for shits and giggles...

having said that, ive driven it for not even 1000kms, and the oil pump let go (so gonna get a nitto pump fitted). hopefully around february i can have it running again. come march, ill will have had the car registered and insured for a whole year, and only driven it 800kms...

joys!

[Cowboy1600]

Well, after having got around 14k work done a t a performance shop, Im now making 264rwkw with the same turbo with a tial .64 housing, 6boost manifold, fmic, vipec ecu, 044 and a few other bits and peices.

torque curve is completely different, with it coming onto 15psi at around 3400, holding 15psi through to 8500. torque change from ~3800 - 7800 is virually no change (almost flat line). Still need to get bigger injectors (apparently 580cc dont cut it) and most likely a second 044 for 20+ psi. 264 cams with a bit of timing and of course the screamer for shits and giggles...

having said that, ive driven it for not even 1000kms, and the oil pump let go (so gonna get a nitto pump fitted). hopefully around february i can have it running again. come march, ill will have had the car registered and insured for a whole year, and only driven it 800kms...

joys!

By 14k do you mean $14,000 worth of work?

And 580cc injectors are stressed running 264kw? WTF?

[The Mafia]

crop wheels = bad times.

Been there. done that, you've got a dud. Sorry dude.

[Lithium]

Wow I can't believe you spent that much more money on that awful turbo after being told how bad they are, man if you had saved a couple of pennies elsewhere and used the change to get something decent you'd have a pretty swish package relative to the performance you have now

[Stargate]

By 14k do you mean $14,000 worth of work?

And 580cc injectors are stressed running 264kw? WTF?

apparently, according to the tuner.

crop wheels = bad times.

Been there. done that, you've got a dud. Sorry dude.

we live we learn, cant always win...

Wow I can't believe you spent that much more money on that awful turbo after being told how bad they are, man if you had saved a couple of pennies elsewhere and used the change to get something decent you'd have a pretty swish package relative to the performance you have now

all good, plan on getting the gtx3076 with tial rear housing. apparently, its pretty much a straight bolt up. and from what the tuner has said, the 44mm gate will easily control boost up to around 25psi on the 6boost manifold, but he doesnt like the fact that i have 3.5" cooler piping from the cooler to tb (90mm thrrottle body with forward facing plenum).

[SargeRX8]

What the hell. Why didn't you sell the turbo and be done with it? I spent around 5k on my R33 and I make more power(Turbo, ecu, injectors, dump, all little bits to piece it together). 14k, I would have a forged motor with the same running gear. Hell I would even have change left over.

Edited November 10, 2011 by SargeRX8

[GTScotT]

Can you tell us what $14,000 cost?

And what tuner it was?

[Stargate]

What the hell. Why didn't you sell the turbo and be done with it? I spent around 5k on my R33 and I make more power(Turbo, ecu, injectors, dump, all little bits to piece it together). 14k, I would have a forged motor with the same running gear. Hell I would even have change left over.

well, u must be getting amazing prices on parts because the manifold cost me 1300, ecu was 1800, tune was 1000, fuel system and installation was 800, cooler and piping was 1200, exhaust and screamer was close to 1000, gate was 400, radiator was 350, various hoses / lines / fittings etc was near 500. Inlet manifold was 1400, throttle body was another 300, then things like the catch can, misc labour for other bits and peices that needed doing (water pump).

so thats 1300 + 1800 + 80 + 1200 + 1000 +400 + 350 + 500 + 1400 + 300 = ~9k in parts alone. you must also know that I had just replaced the head gasket, and all that had been done was the head removed, resurfaced and then bolted down with arp studs. i left it to the tuner to put the cams in, timing, manifolds, lines etc. I just supplied the parts, he fitted them (his idea).

I havent included the price of the housing for the turbo (700) as i dont want that to start any hype lol

EDIT: All work performed by insight motorsports in arndell park. top bloke. he asked why i was willing to spend this kinda money and my answer was essentially, why not?

Edited November 10, 2011 by Stargate

[Dose Pipe Sutututu]

No offense but you spent $14k and only achieved those results? Plenty of guys spend around 1/2 of that and get heaps more power with the motor unopened.

[GTScotT]

OK sounds like the cost is reasonably justified then, the missing link is you kept the 2876

Ditch the 2876 in place of the correct turbo, fix the oil pump issue and your laughing.

[Stargate]

No offense but you spent $14k and only achieved those results? Plenty of guys spend around 1/2 of that and get heaps more power with the motor unopened.

I cant see how u can safely have we'll say 500hp for less than 7k. Once you introduce 500hp, you cause alot of problems elsewhere, clutch, suspension, brakes to name a few.

EDIT: no point have 1000hp if you cant turn or stop - especially for a road registered car.

Then to also get a turbo, fit and, tune it, run a fuel system, get it to flow and get it all plumbed up, I cant see it happening unless your getting amazing deals from suppliers.

regardless, I do understand that I have spent "more" than needed to reach this figure, but it is a fantastic starting point in terms of a drift car. Its pretty much what I asked for, and in my opinion, its what I got.

Edited November 10, 2011 by Stargate

[Stargate]

Ditch the 2876 in place of the correct turbo, fix the oil pump issue and your laughing.

Believe me, once the funds are together and the car is once again drivable (after suspension and brakes), its the first thing to swap out to a gtx3076r.

I cant imagine what peoples reaction would be once I tell the how much ive also spent on stuff not related to the motor