turbo choice last time ill ask promise

Here is the differences between the 16T and a GT28. The Mitsu turbo will have 1 of 2 housings on it either a 6 cm2 or 7 cm2. MCX now supplies their kits with the 7 cm angle housing but some of the older kits out there might have a 6cm housing, not sure. Here's where the problem lies, the 7 cm housing which is the larger of the 2 has an effective A/R of .49 when converted to Garrett terms (Mitsu uses a different system for measurement) where the Garrett GT28 is available with either a .64 or .86 A/R. MCX gets away with the smaller A/R because all of their basic kits are all rear mounts and the pressure loss (read here exhaust cooling, temp and pressure are inversely proportional)through the cooling in the exhaust system keeps the heat in check. In a front or mid mount system the 16T or 19T (they use the same exhaust housing and CHRA) will back up way too much heat and the pressure difference between the charge side and the exhaust side will be huge. All that back pressure ends up in cracked headers. Most front mount kits started with the GT2554 years ago but everyone went away from that turbo because as boost went past 10lbs the 2 things happened, first the compressor started to get nearer and nearer the choke line and second the heat built up on the exhaust side. Its just my opinion here so take it as you will but I would'nt use a 16T or a 19T on a midmount for the reasons I just stated. When I built my midmount Rx1 I used a 2860RS with the .64 housing and mostly ran it around 15 or 16 lbs, if I were to do it all over again I would use a 2871 with an .86 housing this time and run the same boost. Don't worry about lag as it is non existant with the midmount, if you build this thing right it'll tear your arms off.

M5

well put m5 .listen to what he is saying trevor.

trevor that turbo looks alot smaller than the 2560 i have .my air filter inlet is alot bigger .buy my 2560 and you will like that turbo and your done with what you want.

good info m-5 it's great to have guy's like you on snowest.
i just have one question a t19 is no where close to it max boost if he only want's to run 14psi would it heat up to the point of cousing a problem.
2 years a go alpine was at the edmonton sled show in talking to him he makes a front mount header that will fit a mcx kit (referring to the t16/t19 rear mount) so there must be a demand for it or he would not make it.

I laid out a 28 housing and a 2554 turbo I have here and I am about 95% sure what you have there is a 2554. I could be wrong but I don't think so.

M5

2860

trevor_zr600 said:

from what i have read on the net it says that the 2554 has an 11 blade turbine and the 2854 has a 9 blade turbine and the other measurements are basically the same between the twohow is jeff simon making almost 300 hp with this smaller turbo at 15 psi on the apex kits .i figured he was pulling my chain but there are acctually dyno results on dynotechs website . im at a loss on what to do

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Your correct, and here is the real description:
The Garrett GT2854R Turbocharger is the smallest Garrett turbo in the GT28 Family. The GT2854R looks similar to the GT2554R also because they are very similar turbos and share almost all parts. The only difference between the GT2854R and GT2554R is that the GT2854R has a larger turbine housing and a different turbine wheel.

The GT2554R turbine wheel have 11 blades with a 53 mm major diameter.

The GT2854R have a 9 blade 53.9 mm turbine wheel. This all means that the GT2854R turbocharger will give you a little bit of extra power at high RPM's because it will flow a bit more on the exhaust side. The spool will be a little bit later on the GT2854R but not much. The GT2854R turbine housing is also cast from high-nickel "Ni-Resist" material for extreme applications.

Like the GT2554R turbocharger. The Garrett GT2854R turbo will give you 270 HP. It will spool up pretty quick because of ball bearings used in the turbocharger.

Model: 471171-9 or 471171-5009
CHRA: 446179-47

Bearing: Ball bearing
Cooling: Oil & Water cooled bearings

Compressor
Inducer: 42.1 mm
Exducer: 54.3 mm
Trim: 60
A/R 0.80

Turbine
Wheel: 9 Blade
Wheel: 53.9 mm
Trim: 62
A/R: 0.64
Wastegated
Turbine Flange: T25

trevor_zr600 said:

from what i have read on the net it says that the 2554 has an 11 blade turbine and the 2854 has a 9 blade turbine and the other measurements are basically the same between the twohow is jeff simon making almost 300 hp with this smaller turbo at 15 psi on the apex kits .i figured he was pulling my chain but there are acctually dyno results on dynotechs website . im at a loss on what to do

Click to expand...

its amazing how much power they will make at sea level where all his # come from. now put that turbo at 5000ft & it cant make that power without making too much heat.

thought we had a deal on you buying mine .what happened .