Welcome to the North American Subaru Impreza Owners Club Monday July 14, 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 > Factory 2.0L 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 03-18-2005, 06:12 PM   #1
line
Scooby Specialist
 
Member#: 76189
Join Date: Nov 2004
Chapter/Region: Tri-State
Location: NJ
Vehicle:
WRX: Parking Lot
Racer in Training

Default VF-34 vs VF-30 vs TD05H 16g

I have been doing a lot of research on the 2 turbos lately and have found a great amount on the VF-3Xs and not so much on the 16g. I have heard lots of different things about the 16g and donít know what to believe. Iím hoping to get VF-34, VF-30 and 16g owners to help me compare them. If you have one of these turbos or have had multiple of them it would be great if you could tell me......

WHP:
lb/ft:
At what RPM's you spool:
Mods:
General impression:

If you guys have dynos and want to throw them up too i would love to get all the info I can.

Just so you guys know my goal is to get about 260-280whp and have spool come as possible. I am open to other ideas but keep in mind that money is a factor and Iím not looking for an engine swap.

Thanks for the help
line is offline   Reply With Quote
Old 03-18-2005, 06:55 PM   #2
speedemon9
Scooby Specialist
 
Member#: 72279
Join Date: Oct 2004
Chapter/Region: MWSOC
Location: Minnesota
Vehicle:
2006 2006 STi

Default

Get the VF-34 because it is a ball-bearing turbo. You should be able to get 260whp out of a VF-34 (I Think)
speedemon9 is offline   Reply With Quote
Old 03-18-2005, 06:59 PM   #3
pux888
Scooby Specialist
 
Member#: 8356
Join Date: Jul 2001
Chapter/Region: MAIC
Vehicle:
02 STi swap
12 WRX limited

Default

big 16 g, better spool and better top end.
pux888 is offline   Reply With Quote
Old 03-18-2005, 07:02 PM   #4
cronic
Scooby Guru
 
Member#: 9749
Join Date: Aug 2001
Chapter/Region: SWIC
Vehicle:
-

Default

Quote:
Originally Posted by pux888
big 16 g, better spool and better top end.
I agree.. Not to mention upgradable later on, and cheap/easy rebuilds..
cronic is online now   Reply With Quote
Old 03-19-2005, 01:12 AM   #5
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

Quote:
Originally Posted by cronic
I agree.. Not to mention upgradable later on, and cheap/easy rebuilds..
Quote:
big 16 g, better spool and better top end.


ding...ding...ding....
Uncle Scotty is offline   Reply With Quote
Old 03-19-2005, 03:22 AM   #6
jaypine
Scooby Newbie
 
Member#: 50398
Join Date: Dec 2003
Location: Cincinnati-Dayton
Vehicle:
2003 WRX Wagon
Silver

Default

Quote:
Originally Posted by pux888
big 16 g, better spool and better top end.
^^^

16G>VF34=VF30
jaypine is offline   Reply With Quote
Old 03-19-2005, 01:06 AM   #7
veightkiller
Scooby Guru
 
Member#: 78967
Join Date: Jan 2005
Chapter/Region: VIC
Location: vancouver B.C
Vehicle:
2011 335i
Black

Default

big 16g..fast spool
veightkiller is offline   Reply With Quote
Old 03-19-2005, 02:37 AM   #8
azn2yunr
Scooby Specialist
 
Member#: 67229
Join Date: Jul 2004
Location: SLC
Vehicle:
9295 BC/gm6
winestone/funky blue

Default

i have a 16g currently and had a 39 on before that. the vf39 felt faster. it also felt like it drove better. this could be for many reasons though.

1. when driving with the 39 i was using stock boost control with vac lines that didnt fit snug over the the nipples. and thusly i was always driving around at 14 psi with spikes higher.

2. the leaking boost control lines also caused a part throtle full boost condition that was verry interesting. at 70 mph and 10 inhg vac adding a little throtle it would hit 14psi verry easy and the car would pull nicely to 100 without downshifting. causing the turbo to feel more driveable.

when using the 16g with the stock boost control i was hitting well stock boost at 11 psi. it didnt feel as fast problay because it wasnt the same amount of boost yet some friends i took around said at stock boost the 16g felt faster than teh 39 at 14psi. since getting the turbo i put on a turbosmart 2 stage mbc running 10 psi and 15 psi. i dont verry offten run 15psi because of fear of leaning out as a fellow with i similar setup to mine (i have a larger and front mounted intercooler) was getting pretty lean on the dyno and he has a 255 fp and i do not. i still get ptfb but it doesnt pull the car as well as the 39 did in this condition. infact it doesnt pull much at all. instead i am forced to coax the car into downshifting by punching the gas down (4eat) and then it pulls nicely. another friend of mine who has a 97 prelude took a ride in my car at 15 psi and he says that its incredibly fast even though i dont think that it is. before when i drove his car it was the fastest thing i had driven and i was really impressed with it. at that time i was loosing to his car when racing and was running 17.3xx. i havent taken the car to the track after the new turbo but i can put 4 car lengts on him in before reaching 40 mph from a dig at 10psi.

i was told by deadbolt that the 39 would have more top end than the 16g but that the 16g would have a better midrange. if you look at the compressor maps and stats in the huge thread that has the charting of the flow in cfm of many of the turbos that are popular youll see that at all times the 16g flows more than the vfx series by over 100 cfm and that includes the ever popular vf22.

in the end its your choice but the 16g is the better choice because its easily serviced rebuilt and upgradable. unlike ihi's which have been said to be impossible to rebuild and upgrade.
azn2yunr is offline   Reply With Quote
Old 03-19-2005, 06:36 AM   #9
ilivas
Scooby Specialist
 
Member#: 56056
Join Date: Feb 2004
Chapter/Region: South East
Location: Hickory, NC
Vehicle:
2004 wrx
T04R Turbo / 8k rpm 257

Default

vf34 is not ball bearing, it's roller bearing.

Go with the 16g.
ilivas is offline   Reply With Quote
Old 01-04-2009, 03:15 AM   #10
mogunz
Scooby Newbie
 
Member#: 143488
Join Date: Mar 2007
Default

Quote:
Originally Posted by ilivas View Post
vf34 is not ball bearing, it's roller bearing.



Go with the 16g.
vf34 in fact is ball-bearing, while vf30 is not.
mogunz is offline   Reply With Quote
Old 01-04-2009, 03:29 AM   #11
JSarv
Scooby Specialist
 
Member#: 163445
Join Date: Nov 2007
Chapter/Region: MWSOC
Location: Effingham IL (Central IL)
Vehicle:
l33t *******
12.07@115.9mph-EJ205

Default

Little late bud
JSarv is offline   Reply With Quote
Old 01-04-2009, 07:44 AM   #12
JoePokah
Scooby Newbie
 
Member#: 154734
Join Date: Jul 2007
Chapter/Region: TXIC
Location: Arlington Texas
Vehicle:
2005 Legacy GT LTD
OBP

Default

only a few years. Like Bush!

Good Stuff.

Jeff
JoePokah is offline   Reply With Quote
Old 01-04-2009, 01:24 PM   #13
ch04awd
Scooby Specialist
 
Member#: 199140
Join Date: Jan 2009
Chapter/Region: Tri-State
Vehicle:
05 wrx

Default

Quote:
Originally Posted by JSarv View Post
Little late bud
haha 2 year old thread
ch04awd is offline   Reply With Quote
Old 03-19-2005, 08:39 AM   #14
Need4Boost
Scooby Specialist
 
Member#: 15194
Join Date: Feb 2002
Chapter/Region: Tri-State
Location: 1^2 Mile, NJ
Vehicle:
2004 Lightning,
2001 BMW 330ci

Default

I have ran VF30, 34, and a frankenstein TD05 16G. Power output was pretty much the same (using same tuner) but 16G edged out. Spool time was faster with my VF30/34 then the 16G. At the time I ran these different turbos, I was running a TXS Stg4 + and only TXS parts.

All 3 turbos will yield you the 260-280awhp range but this will vary on what Dyno is used.
Need4Boost is offline   Reply With Quote
Old 03-19-2005, 02:02 PM   #15
line
Scooby Specialist
 
Member#: 76189
Join Date: Nov 2004
Chapter/Region: Tri-State
Location: NJ
Vehicle:
WRX: Parking Lot
Racer in Training

Default

so Need4Boost would you say that the VF-34 and the 16g are very similar. When did you get full boost and what would suggest for me to get? Im really looking to see which will spool up the fastest and beable to hold the power to near redline. From my research all 3 should beable to do so, but im looking for which can do it best. I have an AP right now so im leaning to the VF-34 but if i got some cold hard facts that the 16g would spool faster and have more top end then i would head down that path.

Thanks guys for all the info but keep it coming
line is offline   Reply With Quote
Old 03-19-2005, 02:11 PM   #16
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

The TD05 is rebuildable....and the VFxx is disposable....DONE DEAL.
Uncle Scotty is offline   Reply With Quote
Old 03-19-2005, 02:21 PM   #17
line
Scooby Specialist
 
Member#: 76189
Join Date: Nov 2004
Chapter/Region: Tri-State
Location: NJ
Vehicle:
WRX: Parking Lot
Racer in Training

Default

You guys claim better spool and better top end but some who has had both tuned by the same person said the VF-34/30 spool faster. Any physical proof to support either claim? If anyone else has had both I would love to see what you though of both and which you would pick.
line is offline   Reply With Quote
Old 03-19-2005, 02:25 PM   #18
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

Quote:
Originally Posted by line
You guys claim better spool and better top end but some who has had both tuned by the same person said the VF-34/30 spool faster. Any physical proof to support either claim? If anyone else has had both I would love to see what you though of both and which you would pick.

This debate will never be won, here....there are WAY too many variables.

The real issue is do you want a disposable, non-upgradable turbo or not.

Your choice....I made mine and am very pleased.

And the real comparo is the VF22 and the TD05-16G....not the VF30/34.
Uncle Scotty is offline   Reply With Quote
Old 03-19-2005, 02:32 PM   #19
line
Scooby Specialist
 
Member#: 76189
Join Date: Nov 2004
Chapter/Region: Tri-State
Location: NJ
Vehicle:
WRX: Parking Lot
Racer in Training

Default

Uncle Scotty could you tell about where you get full boost. I would love to have spool close to that VF-34 with the top end of a VF-22. Also could you include your mods or point me in the right direction to find them.


Still looking for new thoughts and ideas so dont be afraid to jump in people!!!
line is offline   Reply With Quote
Old 03-19-2005, 03:17 PM   #20
Uncle Scotty
Scooby Guru
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK Houston
we have an Uncle

Default

Quote:
Originally Posted by line
Uncle Scotty could you tell about where you get full boost. I would love to have spool close to that VF-34 with the top end of a VF-22. Also could you include your mods or point me in the right direction to find them.


Still looking for new thoughts and ideas so dont be afraid to jump in people!!!

No......it is 100% a matter of supporting mods and tune....MY numbers are totally nebulous to you.

Really...forget it.....it won't ever really matter.

Make your choice.....disposable or not......disposable = VF22 P&P Not = TD05
Uncle Scotty is offline   Reply With Quote
Old 03-19-2005, 04:56 PM   #21
sandiegowrx
Scooby Newbie
 
Member#: 41743
Join Date: Aug 2003
Chapter/Region: SCIC
Default

What is frustrating is that most people just repeat what others say. I'm not saying that what is said is right or wrong. But I would like to see some of the info the poster origianlly asked for; some concrete dyno #'s, etc from people who have personal expereince. And yes, I do know dyno #'s are subjective, but not nearly as much as butt-dynos and hearsay. Unfortunatley I havn't seen that many 16g dyno's yet. The ones I have seen are right around vf34/22 territory.

Quote:
Originally Posted by line
WHP:
lb/ft:
At what RPM's you spool:
Mods:
General impression:

If you guys have dynos and want to throw them up too i would love to get all the info I can.

Last edited by sandiegowrx; 03-19-2005 at 05:01 PM.
sandiegowrx is offline   Reply With Quote
Old 03-19-2005, 05:07 PM   #22
jaypine
Scooby Newbie
 
Member#: 50398
Join Date: Dec 2003
Location: Cincinnati-Dayton
Vehicle:
2003 WRX Wagon
Silver

Default

I have saved dynos of 16Gs, 18Gs, 20Gs, Greens, VF30s, VF22s,GT25s,GT30s,GT11s, 2L, 2.2L,2.5L,2.8L. It doesn't mean much unless it's the same dyno, tuner, conditions, etc. Even then? What do you want to see?
jaypine is offline   Reply With Quote
Old 03-19-2005, 05:13 PM   #23
line
Scooby Specialist
 
Member#: 76189
Join Date: Nov 2004
Chapter/Region: Tri-State
Location: NJ
Vehicle:
WRX: Parking Lot
Racer in Training

Default

sandiegowrx: It says you have a VF-34. Could you give me some info. At what RPM's does it spool? What mods do you have? What do you think about the setup overall?

jaypine: To be honest with you have have only seen one 16g dyno map i was hoping to see some others to see how they compare to each other and the vf34. I dont really care about the final # as much as the area under the cure and where the torque cure starts to flatten out
line is offline   Reply With Quote
Old 03-19-2005, 05:21 PM   #24
sandiegowrx
Scooby Newbie
 
Member#: 41743
Join Date: Aug 2003
Chapter/Region: SCIC
Default

Quote:
Originally Posted by jaypine
I have saved dynos of 16Gs, 18Gs, 20Gs, Greens, VF30s, VF22s,GT25s,GT30s,GT11s, 2L, 2.2L,2.5L,2.8L. It doesn't mean much unless it's the same dyno, tuner, conditions, etc. Even then? What do you want to see?
Like I said earlier, #'s and graphs can tell me a lot more than hearsay or someone trying to decribe to me how fast/slow their car is in words. I just havn't seen many 16g dynos.

My VF34 is ported and is not working well w/ my AP and needs a custom tune. I am unable to hit target boost and only see 13psi max. In 4th gear, I hit my limited max boost at 3,100rpm.

I would love to see #'s from a few different cars w/ the Super16g. It looks like a very promising turbo.

Last edited by sandiegowrx; 03-19-2005 at 05:30 PM.
sandiegowrx is offline   Reply With Quote
Old 03-19-2005, 08:44 PM   #25
MINO
Scooby Specialist
 
Member#: 12841
Join Date: Nov 2001
Chapter/Region: SCIC
Location: jchattdesign.com
Default

Here's my runs with the 16g.
Starting with my current tune. This dyno does 235-245 whp for stock STIs.
91 Octane.
HKS Header
m2 uppipe
(both wrapped)
APS 3 in TBE
STI injectors, walbro fp
16g (ported)
20w 50 oil
Ecutec
max 16.5psi
(this chart also illustrates the importance of using the correct length of vacuum line. The ports are poorly angaled for the factory lines)
1 step colder iridium ngks
My tuner stated that, in his experience, the 16g has a better curve than the vf 30-34 but the vf has more at the top.



Previous run.
Minus the header. Using a Unichip 17psi, godspeed dp and kakimoto.
This dyno was not calibrated correctly at the time. I'm not sure what to compare it to other than the other 16g on this chart. He was running TXS
FMIC, Shorty, TBE and a mix of race gas (probably 95-96):


I've seen a current graph for his car with 300whp on deadbolts site.
hope this helps.
MINO 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
Gauging Interest: Trade VF-34 for VF-39 NewGwrx NESIC Private Classifieds 14 04-16-2006 09:33 PM
WTB: VF-34 or VF-39 F3nom3ni Private 'Wanted' Classifieds 6 03-26-2006 11:06 PM
If you could do it again, VF-34 or VF-22? BMS Factory 2.0L Turbo Powertrain 31 03-22-2005 08:41 PM
Vf-34 or VF-39:which one do you like better?? RedScooby2004 Factory 2.0L Turbo Powertrain 24 06-11-2004 11:00 AM
VF-34 or Sr-30 StarDogChampion Factory 2.0L Turbo Powertrain 13 05-05-2004 09:32 PM


All times are GMT -4. The time now is 12:42 PM.


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.