Welcome to the North American Subaru Impreza Owners Club Thursday December 18, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Pre-2002 Factory Turbo Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 12-13-2003, 04:34 PM   #1
d00f
Scooby Specialist
 
Member#: 6000
Join Date: Apr 2001
Location: Ottawa, Canada
Vehicle:
2000 GC8 STi V4 swap
BRP

Default Legacy turbo - which came with a VF10?

Since my Impreza is off the road I'm working on a Mazda 323GTX. It has a 1.8l motor and came with an IHI VJ20 turbo. Apparently I can hybrid this with a "Liberty RS" turbo turbocharger called a VF10.

I'm trying to figure out which turbo the legacy turbo came with. Some people say it's a VF8 and some a VF10. I saw a turbo and it contradicted both articles on the intraweb. It said Turbo Spec VF 119006 which seems to me like it's actually called a VF11! Does anyone have info to clear this up?

-Michael
* Registered users of the site do not see these ads.
d00f is offline   Reply With Quote
Old 12-13-2003, 11:07 PM   #2
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

http://bbs.legacycentral.org/viewforum.php?f=2

Come check out the turbo forums of Legacy Central. It was the VF-11 on USDM Legacy Turbos. The Liberty RS' got a 2.0l engine and are a totally different beast than out 2.2l USDM ones...
Matt Monson is offline   Reply With Quote
Old 12-13-2003, 11:11 PM   #3
totoherbs
Scooby Guru
 
Member#: 7321
Join Date: Jun 2001
Chapter/Region: NESIC
Location: waltham, ma
Vehicle:
.... 122 IggPoints
Work... ahhh... so tired.

Default

If you have any mazda questions go over too...

http://www.mazda323performance.com


2.2L legacy block = the cool!
totoherbs is offline   Reply With Quote
Old 12-14-2003, 01:44 AM   #4
legacy92ej22t
Scooby Specialist
 
Member#: 42659
Join Date: Sep 2003
Chapter/Region: MAIC
Location: Williamsport PA/SilvrSprngs MD
Vehicle:
92 Legacy turbo5mt
All go and no show...

Default

The Libert RS got the VF12 . The Legacy turbo got both the VF10 and VF11. The only difference as far as I know between the VF10 and the VF11 is the compressor fan in the 11 is a tad bit bigger. The theory I heard is that the 4EAT got the 10 and the 5MT got the 11. I have a VF11 on my 5MT.

IIRC the VF8 was on the EA82T.
legacy92ej22t is offline   Reply With Quote
Old 12-14-2003, 12:47 PM   #5
d00f
Scooby Specialist
 
Member#: 6000
Join Date: Apr 2001
Location: Ottawa, Canada
Vehicle:
2000 GC8 STi V4 swap
BRP

Default

Quote:
Originally posted by totoherbs
If you have any mazda questions go over too...

http://www.mazda323performance.com


2.2L legacy block = the cool!
I do not have any Mazda performance questions. As you can see it's a legacy turbo question. Most of the Mazda guys are overseas and can't answer questions about a USDM Legacy Turbo.

I'd love to fit the VF24 off my STi on the GTX but it's worth too much and I'll need it when I put the STi motor back together. A garrett GT is way too expensive so this leaves me with only the option of hybriding the stock turbo.

I wonder if anyone knows the upper horsepower limit of the VF11. I'm already making about 230-240 off the stocker and if the compressor housing is larger I hope to hit 300 with the VF11. Any ideas if I'm smoking crack or not?

-Michael
d00f is offline   Reply With Quote
Old 03-16-2004, 03:12 PM   #6
TAS323
Scooby Newbie
 
Member#: 45017
Join Date: Oct 2003
Location: San Diego, CA
Vehicle:
1988 Mazda
Grey

Default

YEAH TOTO thanks for giving us props!
TAS323 is offline   Reply With Quote
Old 03-16-2004, 03:32 PM   #7
d00f
Scooby Specialist
 
Member#: 6000
Join Date: Apr 2001
Location: Ottawa, Canada
Vehicle:
2000 GC8 STi V4 swap
BRP

Default

So I did the hybrid with the VF11 and it's no larger than the VJ20 turbo that came stock. In other words it will not make more than about 240bhp.

Only option is a turbo from some overseas model.

-Michael
d00f is offline   Reply With Quote
Old 03-16-2004, 03:54 PM   #8
Jaxx
NASIOC Supporter
 
Member#: 177
Join Date: Aug 1999
Chapter/Region: NWIC
Location: Boise,Idaho,USA
Vehicle:
The 93 Imp W/EJ20K
flat black

Default

sooo .. seems that i am one of the very very few people in north america with a vf 10 ..


find me a td05 and ill swap ya
Jaxx is offline   Reply With Quote
Old 03-17-2004, 12:03 AM   #9
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

I am sorry I did not come back to this thread sooner. I have been PMing soundsgood about this because he is doing the exact same Mazda conversion/hybrid turbo. Or at least he was going to until I told him the vf-10 and vf-11 do not have better compressors, as you unfortunately found out on your own.

Furthermore,
the only difference between the VF-10 and the Vf-11 is on the exhaust turbine. The compressors are identical. The exhaust turbine is identical, but the nukmber of blades is different. The VF-10 has 9 blades and the VF-11 has 10 blades. That is the only difference.

And Jaxx,
Every automatic Legacy Turbo in America has a VF-10. And a bunch of Australian Liberties and JDM Legacy RS autos got the Vf-10 as well. My new EJ20G engine has a VF-10. But me thinks you may have just been being sarcastic?
Matt Monson is offline   Reply With Quote
Old 03-17-2004, 12:46 AM   #10
subiekid
Scooby Guru
 
Member#: 25516
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Send help, stuck in internet!
Vehicle:
1995 Legacy TURBO!!!
EJ22T/TEC3 & '12 Civic

Default

Quote:
Originally posted by Matt Monson
And Jaxx,
Every automatic Legacy Turbo in America has a VF-10. And a bunch of Australian Liberties and JDM Legacy RS autos got the Vf-10 as well. My new EJ20G engine has a VF-10. But me thinks you may have just been being sarcastic?
umm, are you sure the RBH5 is the same as a vf-10? my motor came out of a 92 turbo legacy - auto, and well it says RBH5
subiekid is offline   Reply With Quote
Old 03-17-2004, 10:32 AM   #11
d00f
Scooby Specialist
 
Member#: 6000
Join Date: Apr 2001
Location: Ottawa, Canada
Vehicle:
2000 GC8 STi V4 swap
BRP

Default

RBH5 is just the series.

According to the mazda boards the only other hybrid up from that to be made is with a VF8 which is claimed to be much much larger on the compressor side.

-Michael
d00f is offline   Reply With Quote
Old 03-17-2004, 07:36 PM   #12
HOK
Scooby Specialist
 
Member#: 447
Join Date: Oct 1999
Location: Oh Canada
Vehicle:
1999 EJ22T222B&EVO
Are we racing yet?

Default

Quote:
Originally posted by d00f
I'd love to fit the VF24 off my STi on the GTX but it's worth too much and I'll need it when I put the STi motor back together. A garrett GT is way too expensive so this leaves me with only the option of hybriding the stock turbo.
Whats price range your thinking... or do you mean you don't want to spend any amount. Because I found a place that seems to be a good price for turbos...
HOK is offline   Reply With Quote
Old 03-17-2004, 10:03 PM   #13
Structure828
*** Banned ***
 
Member#: 50488
Join Date: Dec 2003
Location: Orlando, FL.
Vehicle:
1999 GC8 ej20g!
Black

Default

VF10 is Automatic Legacy US VF11 is manual Legacy US
VF12 is AUSTRALIAN Liberty RS
VF8 Is also Liberty RS...but it was on 1991 motors and is more powerful then the 10 and 11, and basically the same as a 12 or a td04...
Structure828 is offline   Reply With Quote
Old 03-18-2004, 12:22 AM   #14
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

Quote:
Originally posted by Structure828

VF8 Is also Liberty RS...but it was on 1991 motors and is more powerful then the 10 and 11, and basically the same as a 12 or a td04...
Not true. To further the information I posted above. The VF-8 and VF12 also use the RHB5 compressor housing, like the 10 and 11, but they have a different exhaust housing. The VF-10 and VF-11 use the P15 housing. The VF-8 uses the P18 (same exhaust housing as a VF-24, VF-28, and VF-29). The VF-12 use the P20 (same housing as a VF-22 or VF-23) and is way more powerful than a TD04. Many a WRX owner has replaced his TD04 with a VF-12 because it is almost as powerful as a TD05. The VF-12 is the highest CFM of the old roller bearing IHI turbos used on Subaru Legacies...
Matt Monson is offline   Reply With Quote
Old 06-23-2004, 09:14 PM   #15
gtxwgn
Scooby Newbie
 
Member#: 64852
Join Date: Jun 2004
Default

hi guys

i have a gtx motor in my 323 wagon and i have used a vf10 a vf8 and a hks gt2535, i have now got a vf30 on it the hks item was too laggy it kicked in at 3,800 rpm

anyway...ill clear this up , ive fitted all these

i dont know about a vf11 or vf12 i only have jap spec cars in NZ,

the vf8 actually has a P20 housing not a P18 ive never seen a P18 on older rhb52 turbo's

the vf10 has a P15 housing...

the vf10 has the same exaust wheel size as the vj20 but the vf10 compressor side is alot larger , its exactly the same as a t25g turbo...it gives u a noticable differnce and pull all the way to redline unlike stock,

the vf8 is identical in sizes to a vf24 almost...

its got a 46mm comp wheel , u can hybrid this to the stock gtx p15 housing but u MUST fit the vf8 flap on the wastegate and port it massive like a stock vf8 one , the vf10 almsot requires the same u can get away with just orting it,

the housing must be machined for the larger vf8 exaust wheel , i did this exact hybrid last week on a mates car, u also have to weld a snouth on the fron of the cover fo intake pipe..

do u guys have pics of a vf12? i want to see what it looks like, to me it sounds like a vf11 is actually like a vf10 and a vf12 is like a vf8...

the vf8 can get 300hp nmax and the vf10 around 250. a hybrid vf8 on a p15 will get less like 270-280max

the vf30 goes very nice on my car i fitted the whole turbo with flanges weled to manifold and a new 3 inch dump pipe..

the oil feed etc all bolts on easy u have to fit new skinnier water lines thats all, hope this helps...

also - the vf30 has a p18 housing but it kicks in the same as the vf8 with a p20 , i just got a p20 housing off a vf22 i was gonna fit it to my vf30 what u guys reckon ? i still want it to kick in hard
gtxwgn is offline   Reply With Quote
Old 06-24-2004, 06:55 PM   #16
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

gtxwgn,
I have heard it both ways from people regarding the VF-8's. Maybe they made two versions and the AUS market got it with a P20 housing and the JDM market got it with the P18. I don't really know for sure.

As far as your question about the VF-10 and VF-11? They are identical except the VF-11 has one extra compressor blade. That's the only difference. I believe the USDM market was the only place Subaru ever used it while AUS and JDM models got the VF-8's or VF-12's on their 5 spd cars.

Do you have the casting #'s off the exhaust housing of your VF-8? I would like to try and cross reference it with one here in the states that I can get numbers off of...
Matt Monson is offline   Reply With Quote
Old 07-04-2004, 11:04 PM   #17
WJM
Guest
 
Member#:
Default

Quote:
Originally posted by legacy92ej22t
IIRC the VF8 was on the EA82T.
Nope. VF7 on those.
  Reply With Quote
Old 07-10-2004, 02:45 PM   #18
legacy92ej22t
Scooby Specialist
 
Member#: 42659
Join Date: Sep 2003
Chapter/Region: MAIC
Location: Williamsport PA/SilvrSprngs MD
Vehicle:
92 Legacy turbo5mt
All go and no show...

Default

Matt- I'm confused. In one of your earlier post you say that the only difference between the VF10 and 11 is that the exhaust turbine on the 11 has an extra blade, now on a later post you say that it's the compressor that has the extra blade. I'm sure one or the other was a typo but which one's true? I always thought the difference was in the compressor personally.

Oh and I always thought the VF10 was on the 4eat Legacy turbos and the VF11 was on the 5mt's but over on Legacy Central we found that some guys are claiming VF11's on their 4eat's. I don't know which is which now. Is there any possibility that certain years had the different turbo's and other years had the same?
legacy92ej22t is offline   Reply With Quote
Old 07-10-2004, 02:48 PM   #19
legacy92ej22t
Scooby Specialist
 
Member#: 42659
Join Date: Sep 2003
Chapter/Region: MAIC
Location: Williamsport PA/SilvrSprngs MD
Vehicle:
92 Legacy turbo5mt
All go and no show...

Default

Quote:
Originally posted by WJM
Nope. VF7 on those.

Ah-ha, thanks. I guess I got mixed up on my numbers. There's just so many VF's to contemplate.
legacy92ej22t is offline   Reply With Quote
Old 07-11-2004, 02:47 PM   #20
Jaxx
NASIOC Supporter
 
Member#: 177
Join Date: Aug 1999
Chapter/Region: NWIC
Location: Boise,Idaho,USA
Vehicle:
The 93 Imp W/EJ20K
flat black

Default

Quote:
Originally posted by legacy92ej22t
Matt- I'm confused. In one of your earlier post you say that the only difference between the VF10 and 11 is that the exhaust turbine on the 11 has an extra blade, now on a later post you say that it's the compressor that has the extra blade. I'm sure one or the other was a typo but which one's true? I always thought the difference was in the compressor personally.

Oh and I always thought the VF10 was on the 4eat Legacy turbos and the VF11 was on the 5mt's but over on Legacy Central we found that some guys are claiming VF11's on their 4eat's. I don't know which is which now. Is there any possibility that certain years had the different turbo's and other years had the same?

turbine housing.. vf-10 has 9, vf-11 has 10
remember that you are talking about 3 jdm (RS,gt,wagon-mt/at) 3 AUS models and 2 american models each over 3-5 years there is going to be variance
Jaxx is offline   Reply With Quote
Old 07-11-2004, 05:21 PM   #21
legacy92ej22t
Scooby Specialist
 
Member#: 42659
Join Date: Sep 2003
Chapter/Region: MAIC
Location: Williamsport PA/SilvrSprngs MD
Vehicle:
92 Legacy turbo5mt
All go and no show...

Default

Quote:
Originally posted by Jaxx
remember that you are talking about 3 jdm (RS,gt,wagon-mt/at) 3 AUS models and 2 american models each over 3-5 years there is going to be variance

I'm only talking about the USDM 91-94 Legacy Turbo's that had the VF10 and 11's though.
legacy92ej22t is offline   Reply With Quote
Old 07-12-2004, 01:41 AM   #22
gtx510
Scooby Newbie
 
Member#: 66118
Join Date: Jul 2004
Default

Hi, Ron.


Quote:
Originally posted by d00f
I do not have any Mazda performance questions. As you can see it's a legacy turbo question. Most of the Mazda guys are overseas and can't answer questions about a USDM Legacy Turbo.

I'd love to fit the VF24 off my STi on the GTX but it's worth too much and I'll need it when I put the STi motor back together. A garrett GT is way too expensive so this leaves me with only the option of hybriding the stock turbo.

I wonder if anyone knows the upper horsepower limit of the VF11. I'm already making about 230-240 off the stocker and if the compressor housing is larger I hope to hit 300 with the VF11. Any ideas if I'm smoking crack or not?

-Michael
Actually most of us are in the states...


You sould have listed to Ron.
You'd have had your answer without having to try and make a hybrid.
http://www.mazda323performance.com/f...highlight=vf11

here's a tip.
the VJ20 is about the same size as a VJ11....
use the compressor upgrade that the MX6/Probe guys use, the T-bird Ishi-Warner comp and wheel....

and there's a couple others also
search the mazda site...
gtx510 is offline   Reply With Quote
Old 07-12-2004, 02:30 AM   #23
totoherbs
Scooby Guru
 
Member#: 7321
Join Date: Jun 2001
Chapter/Region: NESIC
Location: waltham, ma
Vehicle:
.... 122 IggPoints
Work... ahhh... so tired.

Default

Man im so confused as to what ihi turbo uses what.... im just giving up on all of them and telling people to run a port and polished vf22 or a GT/T. Bigger is better right?
totoherbs is offline   Reply With Quote
Old 07-16-2004, 07:32 PM   #24
Matt Monson
Scooby Guru
 
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
Vehicle:
99 2.5RS, '85 911
'73 914 and 2012 BRZ

Default

Jaxx,
Thanks for clarifying my brain fart...
Matt Monson is offline   Reply With Quote
Old 05-27-2006, 11:59 AM   #25
aderiley
Scooby Newbie
 
Member#: 116048
Join Date: May 2006
Default help

Ok guys maybe you can help me, i have a uk spec ej20 legacy estate with std watercharged intercooler (1995) i cm havu#ing problems with my dual boost, on high it wont pull more than 12psi i guess = 290bhp is it because the turno is maxed out? and which turbo would i have, it has been sugested a vf8? cheers
aderiley is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Which Subaru's came with R180... Track Junky Transmission (AT/MT) & Driveline 4 04-01-2009 08:19 PM
Which 5mt came with a 1 to 1 center diff? AZScoobie Transmission (AT/MT) & Driveline 21 09-16-2004 07:27 PM
which model impreza in japan in 1998 came with a vf22 turbo? sime General Community 7 05-30-2004 07:29 AM
91 legacy turbo - which turbo is this??? d00f Legacy Forum 6 12-14-2003 01:02 PM
what ihi turbo came on the legacy turbo? bill harvey Legacy Forum 1 10-11-2000 06:46 PM


All times are GMT -4. The time now is 01:54 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.