got my k04s back today.. tested the wastgates..

Zold-manS8 · 01-25-2006, 07:29 PM

Background Info: My turbos has gotten out of sync and I was thinking I had a WG or actuator problem. I pulled the engine about a month ago to find a leak between the turbine housing and the center cartridge. I sent them out to Innovative to have them rebuilt. I got them back today and they look great!

I set up this rig to test the crack pressure of the wastegates and insure that they are in sync. The wierd thing is that the exposed thread on the acutator arms are pretty different: the drivers side is 16.36mm and the passenger side is 14.55mm. The difference is about 2 full threads. The wategates seem to be in sync when I test them but should I work about this much difference in the adjustment.

I have a 20 second video of the wastegates opening and closing if anyone can post it. = )

EdyJun · 01-25-2006, 07:41 PM

Jeff Vader - boscoj · 01-25-2006, 07:43 PM

Zold-manS8 · 01-25-2006, 07:46 PM

Zold-manS8 · 01-25-2006, 07:47 PM

J.Moss@TorqueFactory · 01-25-2006, 07:49 PM

the amount of threads doesn't really matter.

Nice O2 sensor kit BTW.

Jeff Vader - boscoj · 01-25-2006, 07:51 PM

-M3=Lunch- · 01-25-2006, 07:53 PM

the Orange County meet, but I know that might be a stretch.

Zold-manS8 · 01-25-2006, 07:56 PM

Jeff Vader - boscoj · 01-25-2006, 07:57 PM

I should be . . .

It's kicking my ass plus my car is sooo close . . .

AAAAAAARRRRRGGGGGHHHHHHHHHHHHHH !

01-25-2006, 07:29 PM	#1
Zold-manS8 AudiWorld Senior Member Garage is empty, add now Join Date: Dec 2002 Posts: 1,705	got my k04s back today.. tested the wastgates.. Background Info: My turbos has gotten out of sync and I was thinking I had a WG or actuator problem. I pulled the engine about a month ago to find a leak between the turbine housing and the center cartridge. I sent them out to Innovative to have them rebuilt. I got them back today and they look great! I set up this rig to test the crack pressure of the wastegates and insure that they are in sync. The wierd thing is that the exposed thread on the acutator arms are pretty different: the drivers side is 16.36mm and the passenger side is 14.55mm. The difference is about 2 full threads. The wategates seem to be in sync when I test them but should I work about this much difference in the adjustment. I have a 20 second video of the wastegates opening and closing if anyone can post it. = ) __________________

01-25-2006, 07:41 PM	#2
EdyJun AudiWorld Super User Garage is empty, add now Join Date: Dec 2002 Posts: 2,719	How much PSI does it take to move the acutator arms? __________________ 2000 Audi S4 STG 3 FATS = 3.66 w/ 91 oct AIM: EdyJun 11 September 2001 In their honor. In their memory. <font color="red">---------------------------------------------------------- <u><big> <a href="http://homepage.mac.com/edyjun1/S4/index.htm">EdyJun's S4 Directory (FAQ, DIY, Info, Tips and Help) </a> </big> </u>---------------------------------------------------------- </font>

01-25-2006, 07:43 PM	#3
Jeff Vader - boscoj AudiWorld Expert Garage is empty, add now Join Date: Feb 2001 Posts: 25,379	what is the default preload and how is it measured/adjusted. __________________ __________________________________________________ _______ * RIP MATT AMMON. YOU WILL BE MISSED *

01-25-2006, 07:46 PM	#4
Zold-manS8 AudiWorld Senior Member Garage is empty, add now Join Date: Dec 2002 Posts: 1,705	they seem to be opening at about 7 psi, I asked them to set the them to 9 __________________

01-25-2006, 07:47 PM	#5
Zold-manS8 AudiWorld Senior Member Garage is empty, add now Join Date: Dec 2002 Posts: 1,705	I don't know how they set them... my test is just an eyeball __________________

01-25-2006, 07:49 PM	#6
J.Moss@TorqueFactory Senior Member Garage is empty, add now Join Date: Jan 2001 Posts: 5,077	If the "Cracking Pressure(psi when the wg puck first moves)" is the same the amount of threads doesn't really matter. Nice O2 sensor kit BTW. __________________ Sport Compact Car 2007 Ultimate Street Car Challenge Winner Jeff Moss, ASE Certified (A1, A3, A4, A5, A6, A8) <a href="http://www.torque-factory.com">Los Angeles area GIAC dealer for Audi, Bentley, BMW, Mini, Porsche and VW. Torque-Factory, Inc.</a> Torque-Factory Support Forum

01-25-2006, 07:51 PM	#7
Jeff Vader - boscoj AudiWorld Expert Garage is empty, add now Join Date: Feb 2001 Posts: 25,379	so the valve needs to resist ~ 20 psi so there has to be some preload I would think __________________ __________________________________________________ _______ * RIP MATT AMMON. YOU WILL BE MISSED *

01-25-2006, 07:53 PM	#8
-M3=Lunch- Member Garage is empty, add now Join Date: May 2004 Posts: 4,225	Jeff, long time no see, you gonna be at WMS this weekend? It would be nice if you could come down to the Orange County meet, but I know that might be a stretch.

01-25-2006, 07:56 PM	#9
Zold-manS8 AudiWorld Senior Member Garage is empty, add now Join Date: Dec 2002 Posts: 1,705	it seems to be about the same - about 7 psi. I wish it were a bit higher __________________

01-25-2006, 07:57 PM	#10
Jeff Vader - boscoj AudiWorld Expert Garage is empty, add now Join Date: Feb 2001 Posts: 25,379	nah . . . SoCal sucks . . . ;) I'm doing the documentation for a Stage 3+ TT kit . . . I should be . . . It's kicking my ass plus my car is sooo close . . . AAAAAAARRRRRGGGGGHHHHHHHHHHHHHH ! __________________ __________________________________________________ _______ * RIP MATT AMMON. YOU WILL BE MISSED *

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