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  #1  
Old 08-06-2006, 11:17 PM
PanzerSD's Avatar
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Advice/Expertise please

Can anyone give me a step-by-step procedure to adjusting the wastegate on my AR T3 Turbocharger?

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  #2  
Old 08-07-2006, 02:37 AM
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Anyone???
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  #3  
Old 08-07-2006, 03:01 AM
ForcedInduction
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1. Remove the u-shaped air intake and the intake to the air cleaner. Make sure to re-install before testing boost pressure.
2. Cool the turbo area with fan.
3. Spray the cap cover "spring" area with Liquid Wrench or other similar solvent.
4. Using a couple of small screwdrivers (a very thin bladed 5-8" shafted one is great), "spin" the spring around until it starts popping out.
5. Pull out the spring with needlenose pliers or fingers.
6. Remove wastegate valve cover. Be careful not to damage the rubber seal behind cap (but attached to body of turbocharger) when removing. There will likely be a small quantity of oil that will leak out when the cover is removed; this is normal � not a problem.
7. Completely remove locknut on wastegate valve.
8. Make a note of measured length of exposed threads on valve.
9. Turn spring assembly (it has flat, thin edges for wrench) clockwise. Begin with 3 full turns - it sounds like too much, but it isn't! If our approximations are
correct, for every 1/8" of threads exposed (by screwing spring assembly in),
this equates to 0.15-0.20 bar of boost.
10. Reverse disassembly procedure. To reinstall spring as easy as possible:

1. Make sure that you've thoroughly cleaned the groove where the spring
resides.
2. Make sure that the spring is thoroughly clean.
3. Lightly file or grind the flat side of the spring at each end so that it's
shiny. This enables you to manuever better when inserting 'cause shiny end
shows.
4. Make sure that rubber gasket is firmly seated before replacing cover.
5. Compress spring with fingers to reduce diameter when placing in groove.
And, push cover hard simultaneously.
6. Then, push spring with biggest screwdriver that you can use. Tap
screwdriver with rubber hammer. You should "feel" spring seat.
7. Do this only on fan-cooled turbo area.

1. Road test using these guidelines: having the boost gauge in the car, start driving a fully warmed up motor and engage "S" and go up to 4,000 rpm and full throttle, read the boost. Good luck and hold on to your hat.
2. If further adjustment is needed, cool turbo area with fan.
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  #4  
Old 08-13-2006, 08:31 PM
PanzerSD's Avatar
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Thanks!

Thank's alot, lance!
I hope it makes a difference, I'll post the results when I have done that!
I'm running on an open downpipe so the results should be obvious!

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RIP: 79 450SEL
2002 E430 4matic (212,000km)

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