Internal vs External Wasgated turbos. Blown turbo question: If the wastegate is stuck does the -
Thread Starter
AudiWorld Super User
Joined: Apr 2002
Posts: 2,850
Likes: 0
Internal vs External Wasgated turbos. Blown turbo question: If the wastegate is stuck does the -
entire turbo need to be replaced for internally wastegated turbos? My wifes 1.9TDI has a stuck wastegate, and the dealer needs to replace the whole turbo. Luckily she has a 10year/100K mile warranty from VW. BTW it only takes a day to replace it, lucky her.
Our cars are externally wastegated and they can be replaced if they get stuck.
So if ATP gives the option for their K03/K04 eliminator turbos whether the wastegate is internal or external, which one would you choose and why.
Our cars are externally wastegated and they can be replaced if they get stuck.
So if ATP gives the option for their K03/K04 eliminator turbos whether the wastegate is internal or external, which one would you choose and why.
AudiWorld Super User
Joined: Dec 2002
Posts: 17,771
Likes: 0
audi turbos (new models a4-s4..) are internally "wastegated"
this is an external wategate (up to the URS4/6 models)
<img src="http://pictureposter.audiworld.com/38899/engine_0022.jpg">
<img src="http://pictureposter.audiworld.com/62262/ss_downpipe.jpg">
<img src="http://pictureposter.audiworld.com/38899/engine_0022.jpg">
<img src="http://pictureposter.audiworld.com/62262/ss_downpipe.jpg">
New Member
Joined: Dec 2004
Posts: 466
Likes: 0
Internally Wastegated --> Little Canister attached to Flapper door in turbine housing..
Externally wastegated means the turbo has no appurtenances connected to it to control boost. You would have a device as manaufactured by Tial, TurboSmart...etc. This is located between the turbine housing and the exhaust manifold, it is a separate unit that can vent to the atmosphere or into the exhaust stream aft turbo to control boost.
Did the car overboost? If so did the dealer perform a compression/leak down test? Might want to keep an eye on oil/water levels for a while to rule out any headgasket or ring sealing issues.
Good Luck though.
Did the car overboost? If so did the dealer perform a compression/leak down test? Might want to keep an eye on oil/water levels for a while to rule out any headgasket or ring sealing issues.
Good Luck though.
Thread Starter
AudiWorld Super User
Joined: Apr 2002
Posts: 2,850
Likes: 0
I definetely think it over boosted. I'm not sure about the compression/leak down test, I'm sure they
did it. I will keep my eye on those fluids. The oil level was fine I checked it before I took it to the dealer, not sure about the water though. Thanks.
Thread Starter
AudiWorld Super User
Joined: Apr 2002
Posts: 2,850
Likes: 0
Ok, the VW Service manager said my car was externally wastegated and the "shiny gold plated" thing -
outside of the turbo could be replaced if the wastegate got stuck. I guess I shouldn't have believed him but when it comes to turbos I'm a bit of a noob :-/ Thanks.
Trending Topics
Thread Starter
AudiWorld Super User
Joined: Apr 2002
Posts: 2,850
Likes: 0
Ahhh...so some turbos have the actuator inside? Maybe that's what he meant.
<img src="http://www.atpturbo.com/Merchant2/graphics/00000001/Catalog%20Images/Wastegate/InternalWgtAssemb-225225.jpg">
<img src="http://www.atpturbo.com/Merchant2/graphics/00000001/Catalog%20Images/Wastegate/TIAL38HP-225225.jpg">
<img src="http://www.atpturbo.com/Merchant2/graphics/00000001/Catalog%20Images/Wastegate/TIAL38HP-225225.jpg">
AudiWorld Stories
Bringing Audi to Life for Audi Fans
10 Strangest Audi Designs That Actually Made Production
Joe Kucinski
2027 Audi Q7 and SQ7: Audi Upgraded EVERYTHING!
Michael S. Palmer
Audi Unveils Absurdly Cool New Supercar: 10 Things You Need to Know!
Verdad Gallardo
The Highs & Lows of Every Audi C-Class Generation
Joe Kucinski
Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer
Brett Foote
10 Audi Features & Options We Miss the Most!
Joe Kucinski
Audi Recreates Crazy-Looking Speed Record Breaker From 1935
Verdad Gallardo
Coachbuilder Recreates the 1995 Audi TTS Concept
Verdad Gallardo
Every Audi V10 Car Ranked!
Joe Kucinski
AudiWorld Super User
Joined: Dec 2002
Posts: 17,771
Likes: 0
the actuator is always outside (it uses a diafragm & spring..must stay away from heat)
the actual wastegate (the flap)can be part of the exhaust housing (internal wastegate ) or on the outside / totally separate from the turbo housing (external wastegate).
Audiworld Sponsor
Joined: Jun 2000
Posts: 19,699
Likes: 1
The TDIs use a VNT (Variable Nozzle Turbocharger) turbo that has no wastegate per se.
Instead it has vanes built into it that direct exhaust gas flow towards or away from the turbine wheel. In that respect it is a part of the turbocharger and can't be replaced.
Our turbos have a wastegate actuator that could be replaced, but the wastegate itself is integral to the turbo.
As others in this thread said, an external wastegate is a device that is entirely disconnected from the turbo and can be replaced on its own.
-Dave Pramanik
Our turbos have a wastegate actuator that could be replaced, but the wastegate itself is integral to the turbo.
As others in this thread said, an external wastegate is a device that is entirely disconnected from the turbo and can be replaced on its own.
-Dave Pramanik