Audi S6 V10 manifold flaps

Audi S6 V10 manifold flaps

Author
Discussion

grahame42

Original Poster:

14 posts

97 months

Thursday 7th April 2016
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I see on here that it's not uncommon to have problems with these flaps. I have the manifold off and thee are some loose flaps and ones that aren't working. The car is running just fine but I also see that these flaps alter the performance at various engine speeds. So I need to fix them. They don't appear to be serviceable - I can't find a way of removing them or ay spare parts. I can't find a replacement manifold in the UK but see I can get one from the States for about $2,100. What have other people done in this situation? Where's the best place to get a replacement (used or new) manifold in the UK? I have tried many part finder sites without success. Thanks for any help

youngsyr

14,742 posts

193 months

Friday 8th April 2016
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From memory don't a lot of people who map their V10 remove these flaps entirely? Might be a cheaper alternative to replacing them.

X5TUU

11,954 posts

188 months

Saturday 9th April 2016
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grahame42 said:
I see on here that it's not uncommon to have problems with these flaps. I have the manifold off and thee are some loose flaps and ones that aren't working. The car is running just fine but I also see that these flaps alter the performance at various engine speeds. So I need to fix them. They don't appear to be serviceable - I can't find a way of removing them or ay spare parts. I can't find a replacement manifold in the UK but see I can get one from the States for about $2,100. What have other people done in this situation? Where's the best place to get a replacement (used or new) manifold in the UK? I have tried many part finder sites without success. Thanks for any help
Im in a similar situation, Ive had the EML and fault code on now for 12k miles/8mths and mine drives fine and won't fail an MOT on it ... I sporadically clear the code and it often stays off for a little while before reappearing ... Im tempted to just leave mine and live with it (its SORN and garaged at the moment mind, well from 1/4/16 anyways).

I was quoted £1600 from my local indy to fix it fully

Marshy

2,748 posts

285 months

Saturday 9th April 2016
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SW Autos can map the flaps out of use: I think they move them to the "out of the way" position and modify the map not to care about them.

Bear in mind that misfire causes are many and varied: coils, plugs, (early on in my case) injectors, (latterly again in my case) a busted crankcase breather. The breather caused very occasional major misfires and rough cold running, followed by the mother Hubbard of oil leaks from multiple sources.

Still it's running like a champ now. Unlike my wallet.

grahame42

Original Poster:

14 posts

97 months

Wednesday 13th April 2016
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Thanks for the contributions. I spoke to someone at SW autos who said they could fix the flaps and map the engine...but didn't sound 100% convincing. He said he'd get the mapping engineer to call me to quote and discuss. He didn't.

Realistically they would need to see the broken manifold and have the car there and they are not too local to me.

So I have bought a new manifold. I think I'll just chuck the old one but what a waste of money.

Thanks for all the input.

k20erham

372 posts

127 months

Wednesday 13th April 2016
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Hi Graham where are you based? I'm in West London and have an S8

grahame42

Original Poster:

14 posts

97 months

Wednesday 13th April 2016
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Barnet

k20erham

372 posts

127 months

Wednesday 13th April 2016
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I like your self had issues with my runner flaps, I removed them but as you suspected you can remap but it does not make it as smooth as it was before and I think the only way is to replace as you have done, I have a chap in Germany who has an S6 inlet for sale but I don't want to buy it to find it's not the same as my S8. Could I have a look or buy your old one please?

grahame42

Original Poster:

14 posts

97 months

Friday 15th April 2016
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Sure. Unfortunately for me the car was repaired and ran for 45 minutes. Then left overnight, taken for a test drive and a piston has seized :-(. The garage are looking at it now. It's a bad week for my car

k20erham

372 posts

127 months

Friday 15th April 2016
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Hi Graham very sorry to hear that, please be very very careful with your garage, if you have really had a seizure something is very very wrong and start looking for a replacement engine, if you have bore damage of any kind it's scrap, I know folks that have had bother and been told it can be repaired but it costs vast amounts. and engines are available in Germany for about 6000 Euro S/H. These really are Hi tech engines the bores are aluminium and honed in a special way to reveal the silica crystals that prevent wear and the piston skirts have an metal liner.
My gut feeling is something has got into the engine and caused damage or it has been run low on coolant, as said something is very very wrong to get any bore issues, I've had the heads off a 130K miles motor and there was not a mark on any of the 10 bores and I mean nothing not like on a iron or linered engine which would normally show wear of some kind.

k20erham

372 posts

127 months

Friday 15th April 2016
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Hi Graham very sorry to hear that, please be very very careful with your garage, if you have really had a seizure something is very very wrong and start looking for a replacement engine, if you have bore damage of any kind it's scrap, I know folks that have had bother and been told it can be repaired but it costs vast amounts. and engines are available in Germany for about 6000 Euro S/H. These really are Hi tech engines the bores are aluminium and honed in a special way to reveal the silica crystals that prevent wear and the piston skirts have an metal liner.
My gut feeling is something has got into the engine and caused damage or it has been run low on coolant, as said something is very very wrong to get any bore issues, I've had the heads off a 130K miles motor and there was not a mark on any of the 10 bores and I mean nothing not like on a iron or linered engine which would normally show wear of some kind.

k20erham

372 posts

127 months

Friday 15th April 2016
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Sorry meant to advise get your engine borescoped by an independent engineer before the heads are pulled. If it's like the S8 the engine and box come out downwards on the subframe, as you cannot get the heads or ex manifolds off with the engine in the car, it's an epic job on the S8.
And pay any garage bills with your credit card as it also puts the CC company liable for any repair that is bad or suspect as well as the garage

craig2003

1,206 posts

207 months

Friday 15th April 2016
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I recently had a flap failure on my RS4, one of the screws holding in the actual flap to the arm came loose and worked its way in the cylinders, the end result was a brand new engine and manifold from Audi for that two parts alone came to 18k.
If you are having issues in that area I could not recommend highly enough that you get it looked at asap, there was no warning with mine however

grahame42

Original Poster:

14 posts

97 months

Saturday 16th April 2016
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One tip is to open the bonnet and start the engine. Get someone to slowly press the accelerator and if you hear a rattling from the manifold that gets noisier with the engine then you have a problem. Another tip is to have a look at the manifold at 70K miles anyway. However, at that point all you can do is replace it :-( - unless cleverer people than I have come across can repair or service it.

k20erham

372 posts

127 months

Tuesday 19th April 2016
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Hi Graham have you moved forwards with your issue? I'm curious how it was concluded the engine had seized?

grahame42

Original Poster:

14 posts

97 months

Tuesday 19th April 2016
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So am I. The engine is out and they were dismantling it yesterday...I'll post an update when I know the details and have stopped crying :-).

grahame42

Original Poster:

14 posts

97 months

Tuesday 19th April 2016
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It's dead Jim. Now need a new (refurbished) engine block

IanH755

1,866 posts

121 months

Tuesday 19th April 2016
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Any ideas yet as to what caused it to seize?

grahame42

Original Poster:

14 posts

97 months

Tuesday 19th April 2016
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No and we might never no as currently the piston is stuck, the bore ruined so there seems little point going further

k20erham

372 posts

127 months

Wednesday 20th April 2016
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Hi Graham, Ebay Germany has quite a few V10 motors on there in between 5-7k Euro second hand, I've not seen any in the Uk, A8 parts may know.
I'm very curious tho, did the garage fit the new manifold? or you? the BXA code is in the S6 the BSM is in the S8.
Something has gone seriously wrong here and my bet is on human error,what does the burn pattern on the piston top look like compared to the others? have a good look at the valves/plug.The evidence of the causation is there unless the garage fitted the manifold and if that is the case ur fxxked.
I have had 1st hand experience with the camshaft drive sprocket coming loose allowing the cam timing to go out until the valves hit the piston, but that puts the MIL on, and strangely enough that was on cylinder 1 like your damage