turbo flow rates cfm

[Guest sleeperfoz]

having a look through a few sites and found this list.

VF22

This turbo has the highest output potential of all of the IHI VF series turbos and is the best choice for those who are looking for loads of top end power. The top end power however, does not come without a cost. The VF22 spools significantly slower than the rest of the IHI models due to the larger P20 exhaust housing and is much less suited for daily driving than some of the other models. Although the largest VF series turbo, the VF22 is not quite optimal for stroked engines or those who wish to run more than 20PSI of boost.

VF23

This turbo is considered a great all-around turbo. Like the VF22 it utilizes the largest P20 exhaust housing. This housing is mated with a smaller compressor housing of the of the VF24. This turbo is considered optimal in applications with range from mild to slightly wild. It does not have the same top end power of the VF22, but spools up significantly quicker.

VF24

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.

VF28

This turbo came standard on the STi Version 5. In terms of overall size, it is smaller than the VF22, VF30 and VF34, and about same size as the VF23.

VF29

This Turbo is nearly identical to the VF24, with the same compressor and exhaust housings. However the compressor wheel in the VF29 is 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.

VF30

The VF30 is commonly considered the best bang for the buck turbo in the IHI VF series line. A relatively new model the VF30 features the same exhaust housing as the VF24 but a larger compressor side similar to the VF22. The combination of these two parts results in increased output potential without the lag associated with the VF22. Although it doesn't offer the top end supremacy of the VF22, the VF30 is a great compromise between these unit and the quicker spooling models.

VF34

The VF34 is nearly identical to the VF30, with the same exhaust housing and compressor. However the VF34 goes back to the ball bearing design, and in doing so achieves full boost approximately 500RPM sooner than the comparable VF30. The VF34 is the most recent IHI design and as such costs slightly more than its counterpart. Top end performance and maximum output are identical to the 30.

VF35

The VF35 has identical internals as the VF30 and it uses divided thrust bearings. However, the exhaust housing is a P15 which means this turbo will have fantastic spool characteristics. This turbo is standard on the new WRX Type RA. LIMITED SUPPLY.

VF36

Roller bearing version of the twin scroll VF37, also has a titanium turbine and shaft for even quicker spool. Same compressor housing as VF30/34, however twin scroll P25 exhaust housing provides slightly better top end output due to reduced exhaust pulse interference. This turbo is good for 400HP and used on JDM STI Spec C from 2003 onwards.

VF37 (thrust bearing)

Enter the age of twin scroll IHI turbos. Same compressor housing as VF30/34, however has a new twin scroll P25 exhaust housing that provides slightly better top end output due to reduced exhaust pulse interference. Twin scroll also provides better spool up for improved low down response over the VF30/34. This turbo is good for 400HP and used on JDM STI from 2003 onwards.

VF38

Twin scroll turbo with titanium turbine and shaft. Smaller compressor housing than VF36/VF37 provides tremendous spool up capabilities but less top end than VF36/37. The spool capabilities of this turbo are demonstrated on the JDM Legacy GT, which reaches peak torque at 2400RPM.

VF39

Single scroll turbo used on USDM STI and latest 2.5L STIs released internationally. Smaller than VF30/VF34.

VF42

Exclusive turbo to the S203/S204 models, this features a twin scroll design with a slightly larger compressor than the VF36/37 turbos and different turbine design (more blades). The VF42 is a roller-bearing turbo and is likely of similar size to the VF22 turbo, but with twin scroll exhaust housing for faster spool and superior top end performance due to reduced exhaust pulse interference.

PE 1818 The 1818 supposedly comes on boost extremely fast...which make it great for road racing or aggressive driving (remember to be responsible :^). The 1818 maxes out somewhere between 350-375 hp.

PE 1820 The 1820 is larger than the 1818 and is capable of running more boost, but at the expense of more turbo lag. Expect it not attain full boost until you have passed 4000 rpm. However, it can be tuned to 400+ hp.

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

if any thing is incorrect please correct

[Guest sleeperfoz]

maybe it worth a stickie

[Guest Rugged_RS]

sticky? lol mean info where did u find all that?

[Guest sleeperfoz]

its called GOOGLE ;D

[Guest Rugged_RS]

LOL Roger roofus

[Guest]

Those CFM's and data have been living on the interweb for years - copied endlessly - no one really knows if they are real or not.

Try finding a compressor map for a vf30 !

[Guest sleeperfoz]

try this its pdf

http://www.sqc-ny.com/tech/turbos.pdf

[Guest sleeperfoz]

 Qwerty said:

Those CFM's and data have been living on the interweb for years - copied endlessly - no one really knows if they are real or not.

Try finding a compressor map for a vf30 !

dam near impossible,unless you calculate one yourself.or have one thats been flowed.

i found one link on google but it keeps timing out

i wouldnt think that someone would compile a list like that just for shits and giggles ;D

[KwS]

just wish i knew how much my VF36 flows at 15psi..... want to know if its more or less than a VF23 and TD05H

[Guest]

 sleeperfoz']

[quote name='Qwerty said:

Those CFM's and data have been living on the interweb for years - copied endlessly - no one really knows if they are real or not.

Try finding a compressor map for a vf30 !

/quote]

dam near impossible,unless you calculate one yourself.or have one thats been flowed.

i found one link on google but it keeps timing out

i wouldnt think that someone would compile a list like that just for shits and giggles ;D

Doesn't means its right tho - tons of wrong info on the web... and as you say no one can check if its right or not without the compressor map.

For example in the cfm data

IHI VF 24------------ 425 CFM at 18 PSI

IHI VF 23 ----------- 430 CFM at 18 PSI

Both those turbos use the same compressor so why are they different... ;D

VF36

Roller bearing version of the twin scroll VF37, also has a titanium turbine and shaft for even quicker spool. Same compressor housing as VF30/34, however twin scroll P25 exhaust housing provides slightly better top end output due to reduced exhaust pulse interference. This turbo is good for 400HP

Thats very very unlikely - I doubt you will find anyone with this compressor making 400hp

[Guest]

 KwS said:

just wish i knew how much my VF36 flows at 15psi..... want to know if its more or less than a VF23 and TD05H

VF36 compressor is slightly bigger than the one in a vf23 - so it should flow more.

Anyways CFM figures are not going to tell you how much power you are going to make. The turbine flow rates are just as important.

[Guest sleeperfoz]

Both those turbos use the same compressor so why are they different... (quote qwerty)

could well have been tested on different machines or equations?

i tottaly agree qwerty

it may be you could take all of these figures with a grain of salt

shall we base it on a rough guide untill the club has a turbo pro that can explain all and get correct figures?

[Optical]

they do not use the same compressor.

[Guest]

 Optical said:

they do not use the same compressor.

Whats the difference ?

If opticals right then what else in the MRT data is wrong ?

I seriously doubt any of this data has been tested on any machine...

Yep i think I it needs a disclaimer - too much info on the web and forums has no facts behind it.

[BC5RA]

It's all so boring.

[Guest sleeperfoz]

 BC5RA said:

It's all so boring.

and your point is? ???

[BC5RA]

I've seen these readout a million times on a million different sites. Carry on.

[Guest Rugged_RS]

lol....

[Guest sleeperfoz]

 BC5RA said:

I've seen these readout a million times on a million different sites. Carry on.

so now you have a choice,go elswhere and dont look.

or go to a billion different sites and see if you can find out the real figures and bits to help others ;D

you would be a LEGEND

[Guest Rugged_RS]

Haha yeah why moan about it tho not everyones seen it a million times like you, its not booring for everyone, i had a good read.