anyone with hybrids from jacob have to adjust wastegate?

myfootsmells · 09-09-2005, 08:35 PM

how many turns did you adjust and which hybrids you have?

thanks

low rider · 09-09-2005, 09:02 PM

adjusted then to open at 8.5 psi using a mity vac hand help pressure pump. attached to the waste gate line leading out of the n75 valve. worked great

French-Fried-Rings · 09-09-2005, 09:03 PM

JBear::FATS · 09-09-2005, 09:44 PM

with the wastegate line, did you have someone work the vac while you adjusted, I assume you watched wastegate waiting for them to move at X PSI ?

Did you adjust the other side with vac also, or did you match the adjustment you made on the other side (ie: number of turns of the nut) ?

Marin S4 · 09-09-2005, 10:02 PM

The most important thing is that they are in sync. Check with Mike on what he has found to be ideal WG pressure. To much and you get coil bind. To little and they bleed off boost on the top end.

Mike2kS4 · 09-09-2005, 10:12 PM

Normally I set them at 9# of actuation pressure. It ends up being about 4.5mm more thread than where Jacob sets them.

At this preload setting the WG's travel is slightly decreased, but nothing worth mentioning. My car is capable of running a pool-table flat boost curve of 9psi to redline.

myfootsmells · 09-09-2005, 10:16 PM

how should i measure and what not

Mike2kS4 · 09-09-2005, 10:47 PM

It's not easy adjusting them and synchronizing them from under the car.

I sacrificed a 10mm box wrench by grinding the end so it was a C shaped and barely slid over the shaft. The star pointed C gives you many more turns than you'd get fiddling with it otherwise. I also used a small pair of needle-nosed vise-grips to manipulate the rod, it helps.

The easiest way to do this is from under the car. Put it high on jackstands and lie under there. No need to take off the bellypan either.

Mark the lowest facing portion of the locknut with marker or a scratch or something. Loosen the locknut (the one closest to the actuator body) and count the turns as best you can, using your mark as a reference. To get 4mm it's around two full turns, I think. Do the other side.

Crank down the other two nuts with the wrench. This should take relatively forever, since you can only get tiny fractions of a turn at a time.

Lock the nuts together and put back on the clip.

Test them with a mightyvac or air compressor from the WG actuator circut. Watch to be sure they actuate in synch.

That's about it.

Snow Trooper · 09-10-2005, 12:03 AM

it just seems like such a minor detail. and this isnt just from jacob, almost all turbo builders are guilty of this.

btw- i realized today that i MIGHT have to run BOVs, doh...

myfootsmells · 09-10-2005, 12:06 AM

09-09-2005, 08:35 PM	#1
myfootsmells Junior Member Account #: 79943 Join Date: Aug 2004 Posts: 921	anyone with hybrids from jacob have to adjust wastegate? how many turns did you adjust and which hybrids you have? thanks __________________ SoCal Mechanic/Installer - Jose "El Diablo" @ Euro-Tech B5 S4 FATs Calculator Web Based FATs Calculator/FATs DB/VAG Locator Tuning - Jeff Moss @ torque-factory.com Parts - Mike "Piggie" @ vastperformance.com

09-09-2005, 09:02 PM	#2
low rider Junior Member Account #: 7829 Join Date: Jul 2000 Posts: 862	mine were at 6-6.5 psi cracking pressure so I ... adjusted then to open at 8.5 psi using a mity vac hand help pressure pump. attached to the waste gate line leading out of the n75 valve. worked great

09-09-2005, 09:03 PM	#3
French-Fried-Rings AudiWorld Super User Account #: 84981 Join Date: Dec 2004 Posts: 2,988	I'm going to be doing that this weekend, K03/04/16 ZC, Clipped... __________________ Jason 2000 S4 6mt 2003 RS6

09-09-2005, 09:44 PM	#4
JBear::FATS Senior Member Account #: 9725 Join Date: Sep 2000 Posts: 4,427	K04's ? Can you describe the process in a bit more detail ? I'm familar with the wastegate line, did you have someone work the vac while you adjusted, I assume you watched wastegate waiting for them to move at X PSI ? Did you adjust the other side with vac also, or did you match the adjustment you made on the other side (ie: number of turns of the nut) ? __________________ ________________________________________ 2001 S4 6-Speed Santorin Engine/Drivetrain: ASP Custom Tuned Stage III Fueling, RS4 Y-Pipe/Clutch/Fuel Pump/IC's, X1 Intake, Samco F-Hose, APR Bi-Pipe, Piggie Pipes, Miltek Single, AWE DTS, APR Snub, TG SS, VAST Water/Meth Kit. Suspension/Brakes: Vogtland GT, Neuspeed Rear Swaybar (Med), Stoptech 332 BBK. Exterior: 18" BBS CH, M3 Lip Spoiler, SPP Foglight Bulbs, RS4 Grill, E-Codes. Interior: UUC Alcantata Boot, TwinData EFU, Strat S4 Logo Floor Mats, HW V1, PhatBox.

09-09-2005, 10:02 PM	#5
Marin S4 Member Account #: 20878 Join Date: Jun 2001 Posts: 2,571	Use a "T" and adjust both at the same time.... The most important thing is that they are in sync. Check with Mike on what he has found to be ideal WG pressure. To much and you get coil bind. To little and they bleed off boost on the top end. __________________

09-09-2005, 10:12 PM	#6
Mike2kS4 Elder Member Account #: 38083 Join Date: Jun 2002 Posts: 12,104	I adjusted my WG's on every one I bought... Normally I set them at 9# of actuation pressure. It ends up being about 4.5mm more thread than where Jacob sets them. At this preload setting the WG's travel is slightly decreased, but nothing worth mentioning. My car is capable of running a pool-table flat boost curve of 9psi to redline. __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

09-09-2005, 10:16 PM	#7
myfootsmells Junior Member Account #: 79943 Join Date: Aug 2004 Posts: 921	well since the turbos are already in my car, what's the best way to do this? how should i measure and what not __________________ SoCal Mechanic/Installer - Jose "El Diablo" @ Euro-Tech B5 S4 FATs Calculator Web Based FATs Calculator/FATs DB/VAG Locator Tuning - Jeff Moss @ torque-factory.com Parts - Mike "Piggie" @ vastperformance.com

09-09-2005, 10:47 PM	#8
Mike2kS4 Elder Member Account #: 38083 Join Date: Jun 2002 Posts: 12,104	Well... It's not easy adjusting them and synchronizing them from under the car. I sacrificed a 10mm box wrench by grinding the end so it was a C shaped and barely slid over the shaft. The star pointed C gives you many more turns than you'd get fiddling with it otherwise. I also used a small pair of needle-nosed vise-grips to manipulate the rod, it helps. The easiest way to do this is from under the car. Put it high on jackstands and lie under there. No need to take off the bellypan either. Mark the lowest facing portion of the locknut with marker or a scratch or something. Loosen the locknut (the one closest to the actuator body) and count the turns as best you can, using your mark as a reference. To get 4mm it's around two full turns, I think. Do the other side. Crank down the other two nuts with the wrench. This should take relatively forever, since you can only get tiny fractions of a turn at a time. Lock the nuts together and put back on the clip. Test them with a mightyvac or air compressor from the WG actuator circut. Watch to be sure they actuate in synch. That's about it. __________________ 2002 S4 Avant, 6spd. Bone stock. <a href="http://www.autospeed.us"> </a> Caveat: Any advice I express regarding potential tuning and such is purely informational. If your knowledge and abilities are not up to the task, no amount of advice can assist.

09-10-2005, 12:03 AM	#9
Snow Trooper AudiWorld Super User Account #: 71496 Join Date: Mar 2004 Posts: 5,694	i find it unecceptable that they arent matched and setup correctly when recieved it just seems like such a minor detail. and this isnt just from jacob, almost all turbo builders are guilty of this. btw- i realized today that i MIGHT have to run BOVs, doh... __________________ ___________________________ \|.....Overnight.......................\| .\|\ \|.......German Parts..................l..\|\|'\|";,___. \|_..._..._____________======'l=\|_\|_\|....,] "(@)'(@)""'''''''''''''"''''''"/(@)(@)**** "(@) North American Distributor for Rosten Performance products. Old Picture poster.

09-10-2005, 12:06 AM	#10
myfootsmells Junior Member Account #: 79943 Join Date: Aug 2004 Posts: 921	nice dont get the mighty vac part to test it, care to elaborate? __________________ SoCal Mechanic/Installer - Jose "El Diablo" @ Euro-Tech B5 S4 FATs Calculator Web Based FATs Calculator/FATs DB/VAG Locator Tuning - Jeff Moss @ torque-factory.com Parts - Mike "Piggie" @ vastperformance.com

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