What's the stock turbo?

[swingn]

Sooooo...

Does anyone have a final answer on what turbo is on the EJ20T Auto?

I've got a chance to buy a TD04L (Off a EJ20T WRX / STI - I think) rather cheap. Trying to work out if it would be a upgrade or just a replacement?

Either way, I'll probably pick it up, but if it is an upgrade or it indeed turns out to be the manual turbo, then I'll be wacking it in right away

[chriskan]

The WRX STI's use a VF series turbo. the TD04L comes standard on the rexxies I think (used to back in 99-2001), and I'm not sure if it's worth the bother as their fairly inefficient beyond 1 bar, and run out of puff fairly soon in the rev range - would be better to keep an eye out for a VF22/23/24/34 - you'd have to check if it bolts up to the lib though, but they were all used on the EJ20t's in the STI's and bolt up to the standard rexxies no problem.

[tangcla]

TD04 was used in the GC8 WRX, not sure what the L denotes.

But Chris is right, now that he mentions it - VF-?? was used in the STis.

[Mano™]

What model are we talking about tho?? I thought the MY06 is twin scroll, so it isn't a VF Series.. ??

[chriskan]

Actually I think you're right Mano was the twin scroll used in the granny tranny's as well?

The TD04L was still used in the MY06 (pignose) rexxy as well from memory.

There's a listing on the net somewhere with what turbo is in what subaru - maybe on nasioc.

[Mano™]

IHI VF10
This is the standard equipment turbocharger used on the USDM Legacy 4EAT MY91-94. No other information known at this time.

IHI VF11
This is the standard equipment turbocharger used on the USDM Legacy 5MT MY91-94. No other information known at this time.

IHI VF12
This is the standard equipment turbocharger used on the JDM Legacy RS MY89-93. No other information known at this time.

IHI VF13
This is the standard equipment primary turbocharger used on the JDM Legacy MY93-95. No other information known at this time.

IHI VF14
This is the standard equipment secondary turbocharger used on the JDM Legacy MY93-95. No other information known at this time.

IHI VF18
This is the standard equipment primary turbocharger used on the JDM Legacy MY96. No other information known at this time.

IHI VF19
This is the standard equipment secondary turbocharger used on the JDM Legacy MY96. No other information known at this time.

IHI VF20
This is the standard equipment turbocharger used on the JDM Legacy MY97. No other information known at this time.

IHI VF22
(490cfm at 18.0psi, 250-325whp, Bolt-On)
This is the standard equipment turbocharger used on the JDM V3 Subaru Impreza WRX and optional on the JDM Subaru Impreza WRX STi 22b. Of all the IHI models, the VF22 has the largest potential for peak horsepower, and is capable of supporting the highest boost levels. It is capable of running up to 25 psi. The VF22 is a roller bearing turbo that utilizes the P20 exhaust housing.
Expect to achieve full boost with the proper mods and a quality tune between 3200-3700rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.
NASIOC Member powerlabs Results
Purchase $800

IHI VF23
(388cfm at 18psi, 250-325whp, Bolt-On)
This is the standard equipment turbocharger used on the JDM Subaru Impreza WRX STi 22b. The VF23 is a ball bearing turbocharger that utilizes the P20 exhaust housing like the VF22. This housing is mated with the smaller compressor housing of the VF24 for fast response and excellent low and mid-range performance. It does not have the same top end power of the VF22, but spools up slightly quicker.
Expect to achieve full boost with the proper mods and a quality tune between 2800-3300rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.
NASIOC Member ride5000 Results
NASIOC Member overboost Results

IHI VF24
(425cfm at 18psi, 250-325whp, Bolt-On)
This is the standard equipment turbocharger used on the JDM V4 Subaru Impreza WRX STi. This turbo shares its compressor housing with the VF23, however, this housing is mated with a smaller (P18) exhaust side. The smaller characteristics of this turbo allow it to provide ample bottom end power and quick spool. This turbo is very popular for Imprezas with automatic transmissions and Group-N rally cars.
Expect to achieve full boost with the proper mods and a quality tune between 2800-3300rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.
NASIOC Members Davenow & mbiker97 Results

IHI VF25
This is the standard equipment primary turbocharger used on the JDM Legacy B4. Utilizes a thrust-bearing design and a P12 exhaust housing. No other information known at this time.

IHI VF26
(400cfm at 18psi)
This is the standard equipment primary turbocharger used on the JDM Legacy B4. Utilizes a divided thrust-bearing design and a B14 exhaust housing. No other information known at this time.

IHI VF27
(420cfm at 18psi)
This is the standard equipment secondary turbocharger used on the JDM Legacy. Utilizes a ball-bearing design and a P18 exhaust housing. No other information known at this time.

IHI VF28
(425cfm at 18psi, 250-325whp, Bolt-On)
This is the standard equipment turbocharger used on the JDM V5 Subaru Impreza WRX STi.
Expect to achieve full boost with the proper mods and a quality tune between 2800-3300rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.

IHI VF29
(425cfm at 18psi, 250-325whp, Bolt-On)
This is the standard equipment turbocharger on the JDM V6 Subaru Impreza WRX STi. The VF29 is nearly identical to the VF24, with the same compressor and exhaust housings. However, the compressor wheel in the VF29 has been changed slightly. The changes made to the compressor wheel in this model are generally viewed as improvements, and as such, this unit is typically chosen over the VF24. Has a different location for the pressure hose on the wastegate actuator.
Expect to achieve full boost with the proper mods and a quality tune between 2900-3300rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.

IHI VF30
(460cfm at 18psi, 250-325whp, Bolt-On)
This is the standard equipment turbocharger used on the JDM V7 Subaru Impreza WRX STi. The VF30 is a thrust-bearing turbo that utilizes the P18 exhaust housing of a VF24 and the compressor housing sized between a VF23 and a VF22.
Expect to achieve full boost with the proper mods and a quality tune between 3000-3500rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.
NASIOC Member itsawagon Results

IHI VF31
Utilizes a P11 exhaust housing. No other information known at this time.

IHI VF32
This is the standard equipment primary turbocharger used on the JDM Legacy. It utilizes a ball-bearing design. No other information known at this time.

IHI VF33
This is the standard equipment primary turbocharger used on the JDM Legacy. It utilizes a P11 exhaust housing and a divided thrust-bearing design. No other information known at this time.

IHI VF34
(460cfm at 18psi, 250-325whp, Bolt-On)
This is the standard equipment turbocharger used on the JDM V7 Subaru Impreza WRX STi Spec-C. The VF34 is nearly identical to the VF30 but has improved spool up due to its roller bearing design. It also utilizes a P18 exhaust housing.
Expect to achieve full boost with the proper mods and a quality tune between 3000-3500rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.
NASIOC Member wrx1905 Results
NASIOC Member Sports Wagon Results
Purchase $850

IHI VF35
(425cfm, 250-325whp, Bolt-On)
This is the standard equipment turbocharger used on the JDM Subaru Impreza WRX. The VF35 is similar to the VF34. It utilizes the same compressor housing and the same compressor inducer size. The differences are in the divided thrust-bearing design and the P15 exhaust housing. This allows the VF35 to spool slightly quicker than the VF34 at the cost of less top-end performance.
Expect to achieve full boost with the proper mods and a quality tune between 2800-3300rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.

IHI VF36
(430cfm, 250-325whp, Modification Required)
This is the standard equipment turbocharger used on the JDM V8-V9 Subaru Impreza WRX STI Spec-C Type RA. The VF36 is a twin-scroll turbocharger that utilizes a ball bearing design, a P25 exhaust housing, and Titanium (possibly TiAl?) compressor wheel for improved spool. It is essentially a fast spooling VF34.
Expect to achieve full boost with the proper mods and a quality tune between 2800-3300rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.
NASIOC Member dug-e-fresh Results 1
NASIOC Member dug-e-fresh Results 2

IHI VF37
(430cfm, 250-325whp, Modification Required)
This is the standard equipment turbocharger used on the JDM V8-V9 Subaru Impreza WRX STI. The VF37 is a twin-scroll turbocharger that utilizes a thrust bearing design and a P25 exhaust housing. It is essentially a fast spooling VF30.
Expect to achieve full boost with the proper mods and a quality tune between 2800-3300rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.
NASIOC Member deathinacan Results

IHI VF38
The VF38 is a twin-scroll that utilizes a Titanium turbine and shaft. This turbocharger yields tremendous spool-up but offers less top-end than the VF36/VF37. The spool capabilities of this turbo are demonstrated on the JDM Legacy GT, which reaches peak torque at 2400RPM.

IHI VF39
(250-325whp, Bolt-On)
This is the standard equipment turbocharger used on the USDM Subaru Impreza WRX STI. It can be found on all model years from 2004-2006. The VF39 utilizes a thrust bearing design and the P18 exhaust housing.
Expect to achieve full boost with the proper mods and a quality tune between 3000-3500rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles that utilize this turbo aftermarket. Though they are prone to cracking, VF39’s can be had for very cheap if bought used.
NASIOC Member trbowrx Results
NASIOC Member javid Results
NASIOC Member downsti Results
Purchase

IHI VF40
This is the standard equipment turbocharger used on the USDM Subaru Legacy GT. It can be found on all the current model years from 2005-2006.
Deadbolt Upgrade

IHI VF41
This is the standard equipment turbocharger used on the JDM Subaru Forester STI. It utilizes a P18 exhaust housing.
Info
Info

IHI VF42
This is the standard equipment turbocharger used on the JDM Subaru Impreza WRX STi S203 and S204. The VF42 features a twin-scroll design with a slightly larger compressor than the VF36/VF37 turbos and different turbine design (more blades). The VF42 is a roller-bearing turbo and is similar in size to the VF22 turbo, but the twin-scroll exhaust housing yields faster spool-up and a superior top-end.

IHI VF43
(250-325whp, Bolt-On)
This is the standard equipment turbocharger used on the MY07 USDM Subaru Impreza WRX STI. It can be found on both base STI's and STI Limited's. The VF43 utilizes a thrust bearing design and the P18 exhaust housing. The primary difference between the VF43 and the VF39 used previously on STI's seems to be the stiffness of the wastegate. The VF43 has a stiffer wastegate designed to reduce boost creep issues. Info
Expect to achieve full boost with the proper mods and a quality tune between 3000-3500rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles that utilize this turbo aftermarket.

IHI VF46
This is the standard equipment turbocharger used on the USDM Subaru Legacy GT MY07. The VF46 utilizes a new five-arc scroll design to improve low and midrange performance over the previous VF40.

[Mano™]

Awww that would have to be the biggest post of all times EVER do I get something ric? hehehe

They actually got a whole turbo list on there of some other ones too.. maybe should have a section list of all turbos?

[chriskan]

Mano, can you post the other ones too - I think there's a list of the WRX/STI turbo's as well.. helpful to compare

[swingn]

Ok, so TD04L doesn't sound like a good option as an upgrade or a spare.

But it would be nice to finally know what turbo's are on what Gen 4 models

[Arith]

Awww that would have to be the biggest post of all times EVER do I get something ric? hehehe

Mano, I don't think it really counts when it's a cut and paste post.

[tangcla]

But it would be nice to finally know what turbo's are on what Gen 4 models

It was covered earlier in this thread?

[swingn]

Ok, so I'm guessing this is the turbo that is used on the pre-face lifted models (MY04-MY06) running a EJ20T:

IHI VF40
This is the standard equipment turbocharger used on the USDM Subaru Legacy GT. It can be found on all the current model years from 2005-2006.
Deadbolt Upgrade


But, this is not the same turbo that runs on the automatic is it? Pretty sure this turbo can be used as an upgrade on the auto's... Correct?

Just trying to get my facts straight so I know what turbo options I have.

[swingn]

Ok, so I'm guessing this is the turbo that is used on the pre-face lifted models (MY04-MY06) running a EJ20T:

IHI VF40
This is the standard equipment turbocharger used on the USDM Subaru Legacy GT. It can be found on all the current model years from 2005-2006.
Deadbolt Upgrade


But, this is not the same turbo that runs on the automatic is it? Pretty sure this turbo can be used as an upgrade on the auto's... Correct?

Just trying to get my facts straight so I know what turbo options I have.

Wait, that can't be right as the USDM only got the EJ25T...

Grrr...

[Mano™]

IHI & Garret Turbo Specs
Model Type Compressor Inlet Diameter Compressor Housing Nominal Turbine Housing Turbine Approx A/R Compressor Wheel Blades Turbine Wheel Blades Waste Gate Actuator Turbine Casting ID & Batch
VF22 Roller Bearing 48.5 A 9.4 PZ20-H 94001 0.71 5 11 C395 H, H4
VF 23 Roller Bearing 46.7 B 9.4 PZ20-H 94001 0.71 6 11 C395 8psi TBA
VF 24 Roller Bearing 46.7 B 9.4 PZ18-H 94001 0.63 6 11 C418 8psi H, S4, 66
VF 30 Bronze Bearing 47.9 C 9.4 PZ18-H 94001 0.63 6 11 C484 H, S4, IC F55
VF 34 Roller Bearing

Garrett 400 Ball Bearing 53 - - Outlet Dia 51.5 - 7 9 11 psi
Garrett 450-500 Ball Bearing 53 Outlet Dia 46.9 - 7 10 14 psi




Turbo Type ----------- Approx flow @ pressure
Stock Turbo ---------- 360 CFM at 14.7 PSI
IHI VF 25 ------------- 370 CFM at 14.7 PSI
IHI VF 26 ------------- 390 CFM at 14.7 PSI
T3 60 trim ----------- 400 CFM at 14.7 PSI
IHI VF 27 ------------- 400 CFM at 14.7 PSI
IHI VF 24/28/29 ----- 410 CFM at 14.7 PSI
========= 422 CFM max flow for a 2 Liter at .85 VE pressure ratio 2.0 (14.7 PSI) 7000 RPM =======
IHI VF 23 ------------- 423 CFM at 14.7 PSI
FP STOCK HYBRID -- 430 CFM at 14.7 PSI
IHI VF-30 ------------- 435 CFM at 14.7 PSI
SR 30 ----------------- 435 CFM at 14.7 PSI
IHI VF-22 ------------ 440 CFM at 14.7 PSI
T04E 40 trim -------- 460 CFM at 14.7 PSI
========= 464 CFM max flow for a 2.2 Liter at .85 VE pressure ratio 2.0 (14.7 PSI) 7000 rpm =======
PE1818 -------------- 490 CFM at 14.7 PSI
Small 16G ------------ 505 CFM at 14.7 PSI
ION Spec (stg 0) --- 525 CFM at 14.7 PSI
========= 526 CFM max flow for a 2.5 Liter at .85 VE pressure ratio 2.0 (14.7 PSI) 7000 RPM =======
Large 16G ----------- 550 CFM at 14.7 PSI
SR 40 ----------------- 595 CFM at 14.7 PSI
18G ------------------- 600 CFM at 14.7 PSI
PE 1820 -------------- 630 CFM at 14.7 PSI
20G ------------------ 650 CFM at 14.7 PSI
SR 50 ---------------- 710 CFM at 14.7 PSI
GT-30 ---------------- 725 CFM at 14.7 PSI
60-1 ----------------- 725 CFM at 14.7 PSI
GT-35R -------------- 820 CFM at 14.7 PSI
T72 ------------------ 920 CFM at 14.7 PSI <--- Note you would have to spin a 2.0 L engine at about 14,000 rpm to flow this much air.
IHI VF 25 ----------- 395 CFM at 18 PSI
IHI VF 26 ----------- 400 CFM at 18 PSI
T3 60 trim ---------- 410 CFM at 20 PSI
IHI VF 27 ----------- 420 CFM at 18 PSI
IHI VF 24/28/29 -- 425 CFM at 18 PSI
IHI VF 23 ----------- 430 CFM at 18 PSI
IHI VF-30 ----------- 460 CFM at 18.0 PSI
AVO 320HP -------- 465 CFM at 17.5 PSI
T04E 40 trim ------ 465 CFM at 22 PSI
FP STOCK HYBRID- 490 CFM at 18.0 PSI
IHI VF-22 ---------- 490 CFM at 18.0 PSI
SR 30 --------------- 490 CFM at 22 PSI
Small 16G ---------- 490 CFM at 22 PSI
ION Spec (stg 0) - 500 CFM at 19 PSI
PE1818 ------------ 515 CFM at 22 PSI
Large 16G --------- 520 CFM at 22 PSI
========= 526 CFM max flow for a 2 Liter at .85 VE pressure ratio 2.5 (22 PSI) 7000 rpm =======
========= 578 CFM max flow for a 2.2 Liter at .85 VE pressure ratio 2.5 (22 PSI) 7000 rpm =======
HKS GT2835 ------- 580 CFM at 22 PSI 400 hp
MRT 400 ------------ 580 CFM at 16 PSI
AVO 400HP -------- 580 CFM at 17.5 PSI
MRT 450 ------------ 650 CFM at 19 PSI
AVO 450HP -------- 650 CFM at 20.0 PSI
SR 40 ---------------- 650 CFM at 22 PSI
========= 658 CFM max flow for a 2.5 Liter at .85 VE pressure ratio 2.5 (22 PSI) 7000 rpm =======
HKS GT3037 ------ 670 CFM at 22 PSI 460 hp
PE 1820 ----------- 680 CFM at 22 PSI
20G ---------------- 695 CFM at 20.0 PSI
HKS GT3040 ----- 710 CFM at 22 PSI 490 hp
AVO 500HP ------ 770 CFM at 22 PSI
SR 50 ------------- 770 CFM at 22 PSI
GT-30 ------------- 790 CFM at 22 PSI
60-1 --------------- 800 CFM at 22 PSI
HKS GT3240 ----- 830 CFM at 22 PSI 570 hp
GT-35R ----------- 880 CFM at 22 PSI
T72 --------------- 1000 CFM at 22 PSI <--- note you would have to run a 2.0 L engine at >40 PSI boost to flow this much air
Conversions used where there was control over conversion factors:
1 HP approx equals 1.45 CFM
1 CFM approx equals 0.0745 lb of air/min
0.108 Lb/min approx equals 1 hp
1 Meter cubed/sec = 35.314 CFS = 2118.867 CFM
1 KG/sec = 132 lbs/min approx equals 1771.812 CFM
power coversions:
1 PS = 0.9859 HP = 75 Kgf m/sec
1.3405 HP = 1 KW
1 HP = 746 watts

[smythie]

Too much text to read, keep it simple next time Mano