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that is not a real Garrett GT45 turbo. The closest thing that those inducers and exducer numbers point to is a GT4094R, with the inducer being spot on and the exducer being 3.8mm smaller on the GT4094R than the turbo that you have. So it looks like it is probably a "custom" turbo from...

Nope. One doesn't exist. The GT2560R does. For low speed, there is no need for 500hp. Need to size the turbo to give you the broadest powerband and the GT35r on a 1jz will move the powerband to much to the right on a speed limited course. On a 7m/2jz. A GT2876R will work quite well...

no no no. They USED to... which means that they are now the GT2560R regardless of what it was called before. If you (or anyone else for that matter) is still refering to it as a GT28R, then you, just like them, are wrong. Here and today, Not yesterday and the past.

No Garrett does not play that mislabeling game. gt28 is in thier 28 series turbo NOT 25.. gt25 series http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT25/GT2554R_471171_3.htm http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT25/GT2560R_466541_1.htm...

prism... I am going to close this thread down. When ever you get those pillars made and ready. Create a for sale thread in the classified forums. If you have any questions. PM me. -Figgie

Considering that Garrett rated the GT2876R at 480 hp.... two of them should be able to do 700 easily. But we get into that efficiency thing again ;)

Hi Can I get a Triple bypass with cheese and a diet stroke please?

PS2 are stout! I had one for quite some time...

two GT28R and only 550rwhp? Hmm. Sounds like they are being choked to death (ie stupid high turbine speeds and not enough room to let them breath and probably to the left in the efficiency islands for both). 125k rpm turbine speed, choked to death.............I wonder how long that setup is...

Suprahero.. have you checked my turbo-calc sheet in the turbo subsection? http://www.supramania.com/forums/showthread.php?t=80948 That sheet has all the garret turbos but it can get you close :)

speaking of efficencies..... http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT28/GT2876R_705330_2.htm The GT2876R, the compressor map is comparable to the big boys. The Turbine map on the other hand.. An Anemic 62% efficient which in words, means that nearly half...

88supraTT 550-600 RWHP is not the issue. The issue is WHEN do you want the power produced within the limitations of the motor. Unfortunatly as displacement decreases, the RPM MUST increase to produce the power so you are looking at a turbo that can breath efficently at 6000+ rpm. The GT35r...

simple phyiscs though. TWo turbos = two points of inefficencies v one for the for single turbo. Simplicity. A single turbo that is sized right will always WORK better and more efficently than a N+1 setup.

Full intake pressure at 3k??? On a 7m, 1jz, and even the mighty 2jz? Not unless you are increasing the displacement to 4L on each of those motor will you get full intake pressure by 3k rpm. Not happening unless you are going to run NO2. Realistically most 600hp turbo won't spool until about...

CAI? laughable. If the intake is not outside of the engine bay like stock.. it is not CAI.

lol. nearly 11mm smaller stroke! And technically the SHO was a japanese engine as Yamaha played a huge part in its development. ;) Now a days you have 91+mm stroke motors running 7000 rpm redline without one hiccup. That is 15 years after the fact though ;)

borla. Summit and jets have their oval canister that is 4 in/out either on center or offset.

OR you could use the AFM/MAF to get a real measurement instead of "assumed/calculated" values.

Reg Reimer ECU = the now defunct techtom (think I spelled that right). stock ECU. Even with piggy backs I would not go above 500hp. To much ignition unknowns when it comes to timing and fueling.

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