Author Topic: Adjusting wastegate - AAZ (Read 9449 times)

mugly · « **on:** March 16, 2009, 04:08:01 am »

Can someone tell me which way the nuts need to go to up the boost please?
Do i wind them to the end of the bar so in theory they are almost coming off the end of the rod or is it the other way round?

And is it a useless mod without changing the boost pin and winding that round?

I'm running the joke LDA by the way and i've just got my boost gauge ready to fit so what kind of PSI should i expect.

:wink:

myke_w · « **Reply #1 on:** March 16, 2009, 05:38:15 am »

show us a pic of your turbo - they aren't all the same

mugly · « **Reply #2 on:** March 16, 2009, 05:51:32 am »

88jetta350 · « **Reply #3 on:** March 16, 2009, 10:01:51 am »

Please steam clean your engine.

That looks like your valve cover has been leaking for a loooong time, and It's a 5 minute fix.

myke_w · « **Reply #4 on:** March 16, 2009, 10:04:15 am »

also - need a pic of the wastegate - not everything but the wastegate

Vincent Waldon · « **Reply #5 on:** March 16, 2009, 11:27:13 am »

Here's the picture with the wastegate adjustment visible:

In actual fact you will likely find that it's not of much use... its range is pretty limited.

For more control an actual boost controller is probably more effective... if you Search you'll find tons of info on that particular topic. :wink:

Golf/Jetta · « **Reply #6 on:** March 16, 2009, 11:33:36 am »

less boost |--------\\---| more boost

if your going to adjust that thing to above 15 psi, you'll need an intercooler. above 15 psi your turbo will blow in hot air

whats that shinny metal pipe going from the top back of the intake manifold going down near the tranny following the oil supply line for the turbo? kinda looks like a blow off valve. if it is i wonder what sets it off. kinda looks vaccum activated attached to the wastegate .

Vincent Waldon · « **Reply #7 on:** March 16, 2009, 11:38:23 am »

Quote from: "Golf/Jetta"

whats that shinny metal pipe going from the top back of the intake manifold going down near the tranny following the oil supply line for the turbo?

EGR system, turned on and off by the Engine Control Module via vacuum.

On some of the "extreme" ECO AAZ engines the turbo is also often turned on and off by the ECM as well. Hard to tell from these pictures exactly, but it looks to me like there's a Y-connection on the vacuum hose to the EGR that goes to the turbo's wastegate.

mugly · « **Reply #8 on:** March 17, 2009, 02:28:09 am »

Thanks for the info guys, got my boost gauge installed and it's pushing a max of about 0.4 bar which i think is about right for stock boost.
Going to have a play with the wastegate tonight.
Aiming for about 15psi as my gauge only goes that far anyway, will be getting a stock IC soon and i've already blocked the EGR pipe and upped the max fuel screw :wink:

mugly · « **Reply #9 on:** March 17, 2009, 08:23:56 am »

Quote from: "libbybapa"

.4 bar is only 6 psi. Stock boost should be closer to 9-10.

Andrew

:shock: :cry:
Any ideas what to check?

Golf/Jetta · « **Reply #10 on:** March 17, 2009, 02:28:05 pm »

none working diafram, cloged wastegate/turbo.

Vincent Waldon · « **Reply #11 on:** March 17, 2009, 03:02:41 pm »

Also:

- Exhaust manifold leak
- Intake manifold leak
- leak in tubing between turbo and intake manifold

Golf/Jetta · « **Reply #12 on:** March 18, 2009, 02:07:49 pm »

look at that oily mess.. surly that belt isn't going to last long

where is that brake booster?
and what the heck is this sticking in the head of the IP?

truckinwagen · « **Reply #13 on:** March 18, 2009, 02:12:32 pm »

I believe that this car is from the UK, so the brake booster is on the firewall on the drivers side of the car(behind the motor) you can see it in the corner of some of the pics of the back of the motor.

Dirtrag2 · « **Reply #14 on:** March 18, 2009, 04:34:55 pm »

Quote

and what the heck is this sticking in the head of the IP?

the yellow circled plug is the fuel cut off solenoid.

Author Topic: Adjusting wastegate - AAZ (Read 9449 times)

88jetta350