Need Quick Evo Viii Help

i just got a greddy profec B boost controller and i was wonderin what stock boost is on an VIII and what i can safely turn it up to. Im runnin 19.5 right now. Thanks for the help

haha, you're keen, i didn't think it would like doing that continually?

hey sorry bud i just asked a question

sorry... didn't mean to laugh or whatever, just 19.5 is a lot of boost to be running while you're finding out what to turn it up to... i'd dial it down a bit till somone can get you some proper advice, just in case. I suspect the boost is round 13-15 standard.

if you had a Subaru it might be dead by now.

standard boost for a stock turbo engine.. any engine... without adding any injectors or fuel.. nor lowering the compression rate is at about 0.5 - 1.2 bar... unless you do something to the fuel system and compression rate... stick to that range.

kdavis,

The EVO's stock boost pressure is significantly higher then most vehicles.

IMHO, 19.5 psi is a good starting point for the EVO8. Stock boost is 19.5 at 3500, tapering starting at 5K to 14-15 psi at red line.

You should be able to up it to 20-20.5 without significant upgrades. After that, I would start with fuel pump, clutch, turbo back exhaust and ECU.

DAMN! thats one seriously tuned/stressed engine!

stanimal thanks alot for the help. Forums like this are a big help when your in a pinch

The Evos turbo is pretty big. I suggest you ask someone at lancershop.com they know a lot about there Evos.

ummm wait, it's big but it spools up so early its making 19.5 at 3500rpm? sounds more like a little turbo to me, does anyone know what it actually uses?

its got a 16G, i do know that

I Thought It Was A 4g63?

EDIT:
SORRY... I THOUGHT YOU MEANT THE ENGINE NOT THE TURBO

Here's a good starting point for more general info regarding a stock EVO8 from Car & Driver
http://www.caranddriver.com/article.asp?section_id=19&article_id=4186

Here's a bit of info regarding the various turbos used in EVO's over the years.

Evolution 1
Turbo = TDO5H–16G-7
Nozzle Area (cm2) = 7
Exhaust turbine = Inconel (nickel alloy)
Compressor = Aluminum, 60mm wide

Evolution 2
Turbo = TDO5H–16G-7
Nozzle Area (cm2) = 7
Turbine = Inconel (nickel alloy)
Compressor = Aluminum, 60mm wide

Evolution 3
Turbo = TD05H–16G6-7
Nozzle Area (cm2) = 7
Turbine = Inconel (nickel alloy)
Compressor = Aluminum, 68mm wide

Evolution 4
Turbo = TD05HR-16G6-9T
Nozzle Area (cm2) = 9
Turbine = Inconel (nickel alloy)
Compressor = Aluminum, 68mm wide

Evolution 5
Turbo = TD05HR-16G6-10.5T (GSR)
TD05HRA-16G6-10.5T (RS)
Nozzle Area (cm2) = 10.5
Turbine = Inconel (nickel alloy), Titanium alloy (RS)
Compressor = Aluminum, 68mm wide

Evolution 6
Turbo = TD05HR-16G6-10.5T (GSR)
TD05HRA-16G6-10.5T (RS/rs2)
Nozzle Area (cm2) = 10.5
Turbine = GSR - Inconel (nickel alloy), Titanium alloy (RS/RS2)
Compressor = Aluminum, 68mm wide

Evolution 6 : Tommi Makinen Edition
Turbo = TD05RA-15GK2-10.5T (GSR)
TD05HRA-16G6-10.5T (RS/rs2)
Nozzle Area (cm2) = 10.5
Turbine = Titanium alloy for both RS/RS2/GSR!
Compressor = Aluminum, 65mm (gsr) - 68mm(rs) wide

Evolution 7
Turbo = TD05HR-16G6-9.8T (GSR)
TD05HRA-16G6-9.8T (RS/RS2)
Nozzle Area (cm2) = 9.8
Turbine = GSR - Inconel (nickel alloy), RS/Rs2=Titanium alloy
Compressor = Aluminum, 68mm wide

Evolution 7 GTA
Turbo = TD05-15GK2-9.0T
Nozzle Area (cm2) = 9.0
Turbine = Inconel (nickel alloy)
Compressor = Aluminum, 65mm wide

Evolution 8
Turbo = TD05HR-16G6-9.8T (GSR / USDM E8)
TD05HRA-16G6-9.8T (RS/RS2)
Nozzle Area (cm2) = 9.8
Turbine = USDM EVO 8 & JDM GSR =Inconel (nickel alloy),
RS/Rs2=Titanium alloy.
Compressor = Aluminum, 68mm wide

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 = Aluminum, 68mm wide

All Evo 4-8 Turbos are twin scroll designs meaning that the engines exhaust is divided into two channels. As the engine exhausts in pulses, it’s supposed to result in quicker spooling. From the Evo 4 onwards, the Turbo spins in the opposite direction, i.e. counter-clockwise (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 a little sooner and quicker. These titanium turbos can be identified by the A in their name.

IMHO, Inconel turbine compressors are tougher then their Titanium-Alumnide counter parts.

Wow, thats good info.

thanks stanimal, hey do you know who makes those turbos? TD0? is used by trust/greddy right? I thought mitsi actually made some turbos?

TRD2000,

To the best of my knowledge, Greddy does not manufacture turbochargers, they market and package turbo’s for the consumer market.

I'm not positive who makes each of these turbos. However, TD05 is a MHI model number, (Mitsubishi Heavy Industries).

Below is a link that gives you all the major turbo manufacturers and their most popular model numbers.

http://asp.turbo.com.sg/agencies_mitsubishi.asp

BTW, here's a link to some inscriptions on the turbo housing from various EVO's.

http://homepage2.nifty.com/evoevo/lan/turbo.htm#諸元;

BTW, the "big 16G" turbo used on the EVO8 should be good for 350+ crank HP. So, I personally, would have the turbo upgrade pretty far and many $ down the upgrade list.

Well, from what know Greddy is owned or is called Trust in Japan. I'm pretty dure you might have got them confused, because I know that there turbos are on lots of famous Japanese cars, like TOP SECRET's Supra (with the MR2 engine in it) has a Trust turbine. Also JUN's Supra has a Trust turbine.

Like I said though, I'm not sure if Trust owns Greddy, or Trust is Greddy but, I do know they are very closly connected, and I'm pretty sure Greddy is Trust.

close enough to the same company. I think stanimal is right, just market them. HKS market Garrett turbos, i heard something about subaru using mitsubishi turbos, so maybe they are manufactured by mitsubishi industries and solt by trust/greddy??

No, TRUST me Trust/Greddy do make there own turbos. They are a big name company, and they wouldnt use Mitsubishi's turbos. In fact, I heard rumers that the Evo's turbo comes from HKS. I would ask my friend at RPMmotoring.com, but there site is down. I'm sure they would know, but untill then I cant get in touch with them. You can call dealers and ask them that question though.

dude, HKS get their turbos from garrett, they dont make them, hks and trust are tuning houses not manufacturers.

I'm sorry, but I find that extremly hard to beleive. I'm 110 % that they make there own turbos.

look up mitsubishi heavy industries. I think you'll find that they manufacture their own turbos. I found a page which compares garrett, mitsubishi and KKK.

Blitz use KKK
HKS use Garrett
Greddy/Trust use Mitsubishi

as an example, check out
http://www.greddyturbofaqs.com/Greddy.htm
its for the mazda miata but its a greddy turbo/turbo kit. It explains that the kit is based arount a mitsubishi turbo.

next. Greddy may be a major name in car performance, but ot in manufacturing, nor are they a major financial player. I work for an engineering co. and mitsi make EVERYTHING just about, you'd be surprised.

I guess they do. But, you can see why I found it hard to beleive at first right? Look at HKS, they been around since the 70s, and still never made there own. It says that that particuar turbo is based off of a Mitsubishi turbo. And I'm not sure about this, but KKK is a type of turbo (I think......why would a companie call there selves KKK unless rednecks owned it). And if they dont, why dont the other makers take the credit of the turbos.

Evocrazy,

Pretty much everyone over 12 in the US associates "KKK" with the Ku Klux Klan. However, this is not the case in Europe and Japan. The Ku Klux Klan is an organization pretty much limited to the American South East.

As KKK turbolader (turbocharger) are mostly found in European cars, I would guess it's a European turbo manufacturer. The following link shows which manufacturer’s turbo the major auto manufactures use.

http://www.krausmotor.de/turbolader/alfa.htm

In regards to HKS, I would be very surprised if they sold more then 10,000 turbo's a year. HKS might be a big player in the after market, but the number of turbo's they deal with are tiny when compared to the volume produced by the major turbo manufactures such as Garrett, MHI and KKK.

Oh, I see now. But why dont Garrett, and the other take credit?

they are making enough money on factory cars, and lets face it thats where there is money to be made, i'm sure if you were the boss at a car co, or in charge of picking a turbo for their new engine, those company's would be taking a lot of credit. its just not worth it for them for the small aftermarket volume. Having said that i'm getting a garrett for mine instead of any of the kits from HKS or greddy. also, check out the KKK symbols on some of the old race porsches, if thats not taking credit....