Welcome to the North American Subaru Impreza Owners Club Saturday November 1, 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 (EJ Series Factory 2.0L Turbo)

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 11-07-2008, 09:01 PM   #1
pDubs
Scooby Specialist
 
Member#: 149317
Join Date: May 2007
Chapter/Region: MAIC
Location: Fairfax, VA
Vehicle:
'95 BMW M3 (E36)
'05 Kawi ZX6R, '73 CB350F

Default Vf39 with td04 wastegate

Well I purchased a used vf39 from a guy off clubwrx.net to find that there is a td04 wastegate installed. here's some pics. Look at how close the vacuum line nipple things are and how close it is to the coolant line.



Here's my stock td04, notice the same wastegate (they both have the ring indented into the wastegate.


They are the same wastegates and as you can tell the guy drilled an extra hole so it will mount on the 39.

Here are pictures I have gathered of vf39s and their wastegates, notice that there is no ring and it is spaced farther.




The wastegate is completely different. So my question is why would he do this? I'm imagining it will hurt performance, I just installed blue 565cc injectors, walbro 255 fp, catless uppipe and am waiting to put this turbo in. My friend has a vf43 and the wastegate looks identical, could I swap wastegates? His turbo has shaftplay so I don't want to run the 43.
* Registered users of the site do not see these ads.
pDubs is offline   Reply With Quote
Old 11-07-2008, 09:47 PM   #2
vision.dynamix
Scooby Guru
 
Member#: 139955
Join Date: Feb 2007
Chapter/Region: NESIC
Location: Boston
Vehicle:
2015 Subaru STI
Black, like my soul.

Default

Wastegate actuator. He mightve done it because he either bought the VF39 without one or it started to fail. Or he was running (really) low boost. I dont seeing the actuator causing too much problems..its all about which one youre tuned for.
vision.dynamix is offline   Reply With Quote
Old 11-07-2008, 11:54 PM   #3
Noah
Rustle Crow
Moderator
 
Member#: 111510
Join Date: Apr 2006
Chapter/Region: MWSOC
Location: Chicago area
Vehicle:
05 WRX
03 SV650S

Default

Looks great for running wastegate boost
Noah is offline   Reply With Quote
Old 11-08-2008, 10:56 AM   #4
pDubs
Scooby Specialist
 
Member#: 149317
Join Date: May 2007
Chapter/Region: MAIC
Location: Fairfax, VA
Vehicle:
'95 BMW M3 (E36)
'05 Kawi ZX6R, '73 CB350F

Default

Is it going to hurt performance? Will I be able to run Cobb's OTS map because I need to in order to drive to get protuned? Thanks guys.
pDubs is offline   Reply With Quote
Old 11-08-2008, 11:30 AM   #5
03WRX-WRB
Scooby Specialist
 
Member#: 167879
Join Date: Dec 2007
Chapter/Region: South East
Location: Lancaster, sc
Vehicle:
2005 Impreza
midnight blue

Default

the spring pressure on a TD04 to a VF39 is only 2 psi different.

td04 is 8 psi wastegate
vf39 is 10 psi wastegate

it will not hurt the performance..

another good thing is the td04 wastegate you can tighten or loosen the spring pressure. you just need to add a little WGDC in the map and it will be good to go.

if you cant tune the map like i said just keep tightening the wastegate arm till you get you boost you are set for.
03WRX-WRB is offline   Reply With Quote
Old 11-09-2008, 12:10 AM   #6
pDubs
Scooby Specialist
 
Member#: 149317
Join Date: May 2007
Chapter/Region: MAIC
Location: Fairfax, VA
Vehicle:
'95 BMW M3 (E36)
'05 Kawi ZX6R, '73 CB350F

Default

So does anyone know how bad this will affect the Cobb OTS map, is it going to be safe to drive 2 hours to get tuned?
pDubs is offline   Reply With Quote
Old 11-09-2008, 06:09 AM   #7
2.5ReallySexy
Scooby Specialist
 
Member#: 167943
Join Date: Dec 2007
Chapter/Region: NWIC
Location: Vancouver, Washington
Default

yes you can drive it to get tuned just be easy on it and try not to boost it too much
2.5ReallySexy is offline   Reply With Quote
Old 11-09-2008, 12:06 PM   #8
gto7419
Scooby Specialist
 
Member#: 44256
Join Date: Sep 2003
Chapter/Region: Tri-State
Location: Long Island, NY
Vehicle:
2002 WRX Wagon

Default

lower pressure wastegates are actually easier to tune with... they might hurt performance slightly by slowing spool...

You should be perfectly fine running the td04 wastegate... I suggest reading up on the basics of how tuning works and then log the car while driving to see if anythings wrong...
gto7419 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
FS: Used TD04 turbo with Internal wastegate actuator $150 Shipped OBO-PayPal ScoobyNubieToo! Engine/Power/Exhaust 18 01-18-2011 10:06 PM
06 wrx td04 turbo with forge wastegate Slightlymodified06 Engine/Power/Exhaust 8 07-01-2009 11:01 AM
vf39 with wastegate crack Clever23 Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) 6 07-22-2007 07:38 PM
VF39 Thread #1380392: Not hitting target boost (but seeing more with TD04 pill) ghibli99 AccessPort 8 09-09-2006 02:50 PM
TD04 with external wastegate Hondaslayer Normally Aspirated with bolt-on Forced Induction Powertrain 2 07-24-2002 11:09 PM


All times are GMT -4. The time now is 12:00 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.