2.7t Turbo differences.

[kelvinb]

I purchased a used 2004 allroad engine and turbos for my 2002 a6. Apparently I didn't get the memo that the turbo flanges are different? Anyone know of any other differences?

[Doug@FrankenTurbo]

That doesn't sound right. What model turbos did you buy? Which flanges aren't compatible? For the connection to the manifolds?

[A62TURBO]

Yup, 03' and 04' 2.7 turbos use a different flange design.

[julex]

i am not sure if there are differences on DP side but pray they aren't any and swap exhaust manifolds as well.

[belittle]

I purchased a used 2004 allroad engine and turbos for my 2002 a6. Apparently I didn't get the memo that the turbo flanges are different? Anyone know of any other differences?

Only the exhaust portion of the turbo's are different. Its not horribly difficult to remove the exhaust housing and swap them over, however, you will have to remove the turbo from the manifold. You'll also find that all 03+ A6 and Allroads came with the SAI (secondary injection pump) whether it was an auto or manual. If your 02 A6 is a manual you'll have to tap and plug the Kombi valve holes.

[durfA4]

my 01 allroad manual has secondary air system as well, the autos from 03-05 had different exhaust flanges on the turbo to downpipe, 03-04 manuals transmission engines used the same exhaust to downpipe flanges as 00-02

[kelvinb]

I'm going to try and swap turbine housings. The compressor housings look different to, but I'm only worried about the exhaust since it's a complete swap. For 1600 with turbos I thought it was a good deal.

[vtraudt]

Can you post the casting and model numbers of the versions?

[kelvinb]

BUMP

ok so instead of doing the exhaust housing swap, i decided to try and find different downpipes, the car sat this entire time and finally now got around to playing with it. one of the new turbos is bad, it leaks oil like the previous time

i recently purchased turbos from a dismantler that claimed they were from a 2000 a6, and again the downpipe flanges are the same as the 04 allroad. i specifically requested turbos to swap onto my 02 automatic. is there a difference between manuals and autos? my head is about to explode

[kelvinb]

heres one of the stalls in my shop dedicated to this mess

[belittle]

BUMP

ok so instead of doing the exhaust housing swap, i decided to try and find different downpipes, the car sat this entire time and finally now got around to playing with it. one of the new turbos is bad, it leaks oil like the previous time

i recently purchased turbos from a dismantler that claimed they were from a 2000 a6, and again the downpipe flanges are the same as the 04 allroad. i specifically requested turbos to swap onto my 02 automatic. is there a difference between manuals and autos? my head is about to explode

Any BEL engine will come with a more downward sloping exhaust housings, which in turn need the BEL style downpipes/converters. On the BEL turbos the exhaust housing also house the o2 sensors unlike the APB engines. There is no turbo difference in matching years between auto and manual on either the BEL or APB.

Sounds like the dismantler you worked with doesn't know the difference in the years and sent you turbos from a BEL engine. Shoot us an email at [email protected] if you'd like to get the correct turbos for your application.

[vtraudt]

kelvinb: I am in the process of putting RS6 turbos on my 02 AR manual.
My turbos are being built (as those done in the past for my 1.8T in the A4 as well as the Passat AEBs) by Nick ([email protected]).
My suggestions:
a) used turbos are a 'gamble' at best. They can be ok (and last 200k miles) or have been treated poorly (and fail right away), or anything in between. With 'engine out' required on our 2.7T and the hazzle/labor/time involved, I would NOT take the risk. Instead: have the turbos rebuild to factory new condition.
b) send your turbos to TurboConcepts. They will rebuild them to as new stock (no china junk parts), or upgrade (nothing crazy for your tiptronic, but a bit larger comp wheels for example work very well) for a bit more money. Obviously, the correct indexing and flanges/housings will be used. Also: I know he has a few pairs of manifold sitting on the shelf as well, if swapping manifolds is needed.

You can contact me (PM, email) or TurboConcepts directly to discuss the details (and send photos of what you currently have).

My email:
[email protected]

TurboConcepts email:
[email protected]


Hint sight is 20/20, but for the

[kelvinb]

Any BEL engine will come with a more downward sloping exhaust housings, which in turn need the BEL style downpipes/converters. On the BEL turbos the exhaust housing also house the o2 sensors unlike the APB engines. There is no turbo difference in matching years between auto and manual on either the BEL or APB.

Sounds like the dismantler you worked with doesn't know the difference in the years and sent you turbos from a BEL engine. Shoot us an email at [email protected] if you'd like to get the correct turbos for your application.

The BEL is im assuming what the 04 is. the 2000 turbos i bought should have been APB right? so there is no difference between the auto and manual?

[Scotty@Advanced]

The BEL is im assuming what the 04 is. the 2000 turbos i bought should have been APB right? so there is no difference between the auto and manual?

There is no difference in the turbos between auto and manual.

I'd avoid used turbos unless they are cheap and then spend $400 each to have them overhauled. New K03's are ~800 each and new RS6 turbos I have a pair for $2200.00.

[kelvinb]

There is no difference in the turbos between auto and manual.

I'd avoid used turbos unless they are cheap and then spend $400 each to have them overhauled. New K03's are ~800 each and new RS6 turbos I have a pair for $2200.00.

well from the sounds of it i should of just taken my original turbos in to be worked on. this is getting ridiculous. why doesnt anyone want turbos as cores if they can make so much money off them?

[vtraudt]

well from the sounds of it i should of just taken my original turbos in to be worked on. this is getting ridiculous. why doesnt anyone want turbos as cores if they can make so much money off them?

Scotty is right: best to have your OEM turbos redone. And $400/ea is about right; just make sure to use a reliable, experienced rebuild shop (no fly by night internet junkies).
And yes: you can also opt to outright buy a good rebuild turbo, then send your cores back.
Regarding 'make so much money' on rebuild: I happen to know the cost of the REAL (no china ebay shit) parts that go into the REAL rebuild. At that margin, I wouldn't want to be in the business (market price for rebuild turbo has dropped so much, it is really not worth it for $400 sales price IMO as a business).

As part of my 'project', I bought a bunch of cores (RS4, 2.7T) locally (1 pair turned out good, the other needed full rebuild), and one mailorder (absolutely, total junk, from huge crack in turbine housing to broken shaft to totally mangled wheels). Still looking for rebuildable RS4 cores AND K04-015 (longitudinal) (have been looking for a long time, but haven't found a single one).

[kelvinb]

i called nick at TurboConcepts and he says at most it will cost at most 475 per turbo for rebuild plus my cores.

[awdjunkies]

If that's for an upgrade to your existing Ko3s then great, but if that's for a factory rebuild? better off going with NEW ONES.

[kelvinb]

i ended up purchasing 2 used turbos from audi4parts, 1 was leaking oil 1 was good. i literally have a pile of 10 turbos now so i was able to find pieces to make them work. it runs and drives now with an oil sensor light on, which also brings up a light telling me its low on oil which i know for a fact isnt the case. time to troubleshoot...

[vtraudt]

Love those used turbos!
Oil light: did you pull VAGcom codes?
I replaced a few of those oil temp sensors right at the bottom of the oil pan. Easy and cheap. Not sure if only temp, or also level?