TECH ARTICLE: 16g turbos and all its variants (20g)
i will say this for the last time as this has GOT to be the definitive thread.
TME is the turbo that came on the evo 6.5 tme. it has titanium aluminide turbine wheel. it has a 10.5 housing also. otheriwse the compressor is the same but revisions have been made to the newer turbine housings so this turbo is outdated at best.
WR also known as the fp white rabbit turbo. this is simply an evo 8 turbo (05) with a larger FIVE BLADED compressor wheel installed by forced performance.
THE DIFFERENCE BETWEEN 8 AND 9 TURBO.
both have 10.5 hot side. both have unaltered turbine wheels. both use the same chra, this means you can swap and mix and match these two turbo's parts to your heart's content (tme9 plug inserted here).
the cold side is the only difference. 9 cold side housing has a larger diffuser, this is the snail section, it's both longer and wider in diameter inside, this creates a faster boost up/boost production/boost response. as a result of the added length of the snail section also known as diffuser, the overall housing is larger. the exducer of the 9 turbo is larger to fill up the space inside of the 9 housing (see below for caveats). the inducer remains relatively the same size.
the reason for br moving to 9 housing is to remove all chances of surge on his and now fp's wheel, larger housing also allows more air through even though the wheel that the 20gs are using is based off the old 8 housing which would leave exducer diameters smaller!
small things that are different. the angling of the turbo oil lines is slightly off due to the 9 housing size. the angle of the coolant line is also a bit off. these two can be bent to fit. the cold side outlet pipe is much different and you can't bend this unit to fit it between the two turbos. so the outlet elbow pipe is the only thing you need from the install kit. everything else can be bent to fit.
20g-8 or 20g8-6. this was a failure 6 bladed stock turbo that surged like ****. came as the first iteration of the failed turbochargers.com and buschur partner up.
20g-9-6. this is turbochargers.com's previous and fouled venture with br. it is less efficient than the 5 blade design. also not recommended for use with ti al internals. tc.com and it's distributors have however sold these with ti al internals. the ti al internals are not real genuine oem pieces but are copies of tme style ti al wheels.
20g-9-5. this is the buschur and fp joint venture turbo. it has the wr style 5 bladed design. this turbo is not recommended for ti al internals.
TME9. now everyone pay attention cuz i'm really quite tired of explaining what this is and no one can get it straight. the tme 9 is the ENTIRE TME 6.5 HOT SIDE mated to THE ENTIRE EVO9 COLD SIDE. that said you can make this turbo several different ways. you can get a 9 turbo and put the tme6.5 ti/al TURBINE wheel in it. or you could piece together the two halves.? or you could buy every part seperately and put it together.
JDM 9RS turbo. this turbo is special, it comes with the equivalent of a 10.5 hot side (with internals, ti/al) and a 9 cold side with the addition of a magnesium 9 compressor wheel. early runs of the jdm 9rs turbo had mag wheel failures with increased boost pressures.
this signifies that the tme9 is safe to run and will cause no surging or too-early-spool-up- issues. as the jdm 9rs turbo spools even faster with no ill effects. this also signifies a different way to piece together a tme9, basically taking a jdm 9rs turbo and replacing the mag wheel with an aluminum one.
forced performance evo green aka buschur racing 20gLT (large turbine) this turbo is basically a 20g9-5 with a larger turbine wheel made by forced performance.
Evolution MR aka "8.5"
GSR = TD05HR-16G6-10.5T or TD05HRA-16G6-10.5T (Ti Alloy option)
RS = 6MT:TD05HRA-16G6-10.5T or 5MT:TD05HRA-16G6-9.8T
Nozzle Area (cm2) = 10.5 or 9.8(RS-5speed)
Compressor = Aluminium, 68mm wide
All Evo 4-8 Turbos are twin scroll designs meaning that the engines exhaust is divided into two channels (see first pic). As the engine exhausts in pulses.. its supposed to result in quicker spooling. From the Evo 4 onwards, the Turbo spins in the opposite direction, i.e. Anticlockwise (hence the R in the turbo name). The Titanium Alumnide alloy used in the RS/RS2 and some GSRS (factory option) has less inertia and thus spins up around 500 rpm sooner. These Titanium turbos can be indentified by the A in their name.
note that there were revisions in the coolant passgages between the 7 and 8 turbos!!!
help me understand something with some of the terms you are using. You said
Originally Posted by trinydex
both use the same chra, this means you can swap and mix and match these two turbo's parts to your heart's content (tme9 plug inserted here).
are you refering to the chra as the cartridge, as labeled in this pic
where the cartridge assembly has the compressor/exhaust blades and the wheel?
well to clarify, the compressor cover is not the only difference between the evo 8 and 9 turbo's. so is the catridge.
so you have to get the compressor cover and the cartridge. the cartridge can be bare, where you can swap in your evo 8 compressor/exhaust blades and the wheel.
if you mean that the cartridges are different in that the attatched blades are different i already referenced that difference earlier....
so i don't understand your question and i think the answer you're looking for is already stated. you can swap them around and they all fit. prolly why the evogreen comes in all the forms it comes in eh?
stuff off an 04 gsr. pms are welcome.
front open differential. stock front strut tower bar. stock front crash beam. stock rear crash beam. stock rear sway bar. brass shifter bushings.
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After looking at the pictures between the Evo 9 turbo with Mag Wheel versus the Evo 8 MR turbo, it looks like the Compressor wheel is bigger. Is that true? Does that also hold true for the hotside wheel? Also, when comparing the a regular Evo 9 turbo versue an Evo 8 turbo, will there be compressor & hotside wheel difference?