Possible dead engine :( edit: new engine on way :)

[adsgreen]

Then he is wrong there is only one gudgeon pin and it holds the piston to the ROD. The pins at the other end are what rod cap bolts.

EFA

Bah humbug. was rushing on iphone.

[Rs4mar]

Thanks edge.
I will try and get more pics and post up as soon as I have any more info.

[Rs4mar]

And thanks adsgreen for all your valuable knowledge so far.

[sakimano]

All warranties I have seen state that it'll be void if used for time trials. Drag strip runs would definitely count in that.

What's a time trial run to do with a dragstrip pass?

Audi does not void warranties for amateur users making occasional track visits.

[spikeyboy101]

Martin im impressed with your patients - i would have been doing my nut in with the garage after 15 days and no further along, there doesnt seem to be any urgency from the garage what so ever.

[S4quattroCab]

Good Luck Martin, I can't imagine Audi would not cover all of the repairs, if they don't it would seriously deter anyone from
buying an Approved Used Audi ever again to find yourself in a position like this. All the best.

[pDkALO]

Gudgeon pins, rod cap bolts, piston rings etc - excellent explanations from ads & arthur etc as to what it all means, but whichever way you look at it, surely these are all internal engine components, failure of which the OP is covered under his Audi warranty? - hang in there and good luck

Martin im impressed with your patients - i would have been doing my nut in with the garage after 15 days and no further along, there doesnt seem to be any urgency from the garage what so ever.

+1 - but to be fair I'm guessing the dealer's having a lot of difficult conversations with the warranty people right now....

[spikeyboy101]

They may be having difficult discussions with the warranty company - but these would be helped if they knew what had gone wrong, per Martin they are non the wiser yet because the engine is still in the car

[Scaff657]

Hi ,mate I remember seeing your car on the show ramps at billingshurst audi about 2 or 3 months ago, nice motor
My missis has taken her a4 sline there a few times and they are useless in there it went in with some electronic faults and came out driving worse, they even let her drive off without connecting the main breather pipe that goes onto the engine, I would never take my rs there if your in sussex I find portsmouth audi more helpfull even though I hate main dealers good luck with it all. Marc

[adsgreen]

All warranties I have seen state that it'll be void if used for time trials. Drag strip runs would definitely count in that.

What's a time trial run to do with a dragstrip pass?

You are timing an accelertion run at a drag strip location. It could be very easily argued that you were using it for time trialling and void a warranty. Not saying it's correct, just a point of view.

Audi does not void warranties for amateur users making occasional track visits.

And rightly so... but there's no hard and fast definition of "occasional".

[adsgreen]

Martin im impressed with your patients - i would have been doing my nut in with the garage after 15 days and no further along, there doesnt seem to be any urgency from the garage what so ever.

if you so choose, the OP could start waving the Sale of Goods act at the dealership.
TBH it's getting to the stage where this might be useful as also getting some professional advice.
the SoG act says that the customer should give reasonable opportunity to the trader to fix it. However 2 weeks with just the sump off the car isn't really reasonable.
The only saving grace is that you have a courtesy car but still...

If it were me I'd ask to have a chat with the dealer principle and/or service manager and be incredibly nice and simply ask "so whats the plan from here?"
DONT get cross or angry or even firm. Whilst justified, it doesn't actually help your case so don't try the strong arm tactics. You'll usually get a better outcome from a dealer this way.

[ArthurPE]

I'd be very surprised if the pin failed
the pin shearing is unlikely, it is a very strong single piece, bending possibly, complete failure unlikely
the rod to piston/pin small end joint is a solid piece, but probably the weakest point in the piston connection, but still very strong compared to the big end bolts
pulling the pin thru the piston skirt, unlikely

the weakest point are the big end bolt threads in the rod (the male bolt threads are high grade steel, the female rod threads are alloy) and from the picture this looks like what failed

[ArthurPE]

I would request (demand) a printout of the ecu parameters, especially
throttle position
rpm
peak rpm
road speed
torque at peak rpm if available

in the States law only kicks in when you assert warranty, otherwise you are at the mercy of the Shop, with your only option taking it to another Shop
I'm sure if it wee clear warranty or he offered to pay for it response would be better

[adsgreen]

I agree - I suspect the tech has their gloassary messed up.
However one possible (and it's remote) scenario is when the piston actually siezed. If it siezed through the compression stroke then the cap pins would be doing very little as the rod would be pushing the piston up. It's be rod vs gudgeon pin vs crank and in that case I would expect the pin the fail (and the piston to be a manged mess after that.
Pretty outside chance.. need to see the state of the piston really.

[ArthurPE]

I agree - I suspect the tech has their gloassary messed up.
However one possible (and it's remote) scenario is when the piston actually siezed. If it siezed through the compression stroke then the cap pins would be doing very little as the rod would be pushing the piston up. It's be rod vs gudgeon pin vs crank and in that case I would expect the pin the fail (and the piston to be a manged mess after that.
Pretty outside chance.. need to see the state of the piston really.

I agree that is the most likely scenario for busting the pin, but imho the rod itself would yield/fail first

I'd like to see the ecu data
hopefully they will be fair with him