Are my valves bent and engine blown? Best next steps?

[pmayo1993]

Hi all!
First time posting and got a big issue I'm hoping someone can give me a good direction to go from here.
I have a 2008 A4 Quattro 2.0T manual transmission with 203,000 miles on it. I was recently driving 55 MPH at about 2200 RPM's 5th gear when my serpentine belt broke. I got it towed and replaced the serpentine belt the next morning thinking it was going to be an easy fix. Got it installed and when I turned the engine over, it sounded like there was no compression. I'm by no means a mechanic my engine knowledge is limited but I have a basic idea of how things work. My timing belt was replaced at just under 101,000 miles (according to the sticker under the hood) so by Audi's timeline, I should have been okay with my timing belt until around 210,000 miles but I took the top two bolts off of the timing belt cover and found a handful of loose rubber strips that I'm assuming came from my timing belt slipping and stripping those pieces off. I haven't done a compression test simply because I don't have the tools on hand to do it but I'm willing to get or borrow them if anyone thinks it's worth doing the test.

Main questions:
Are my valves definitely bent from hitting the pistons?
Is it worth getting someone that knows what they are doing to take a good look at it?
Should I do a compression test myself to see where it is at?
Will turning the engine over for the compression test just cause more damage to the valves if my assumption that the timing is off is correct?
Should I just sell it to a junk yard?
What should I expect or try to get from a junkyard?
Better to cut catalytic converter off and sell that separate and then selling rest to junkyard?

A little more background:
This car has a special place in my heart. I inherited it from my uncle who passed away a few years ago. By far my favorite car I have ever owned despite the few issues with it but it was running perfectly until the serpentine belt broke. The car is not missing any parts at all and has really good Cooper Evolution Winter Tires on it with only one Winter on those tires. Tires alone I could probably resell for $250ish if its worth the time and effort to get the tires off the car. It has the catalytic converter and everything still attached. Windshield is cracked on passenger side and minimal rust/body damage around the whole car.

I greatly appreciate any feedback that I am given. I have a strong suspicion that the engine is never going to run again and as much as I love this car, there is no chance I will put the time money or effort into putting a new engine into a car that has over 200,000 miles on it but I figured I should reach out to this amazing community before parting with it for less than $300 in case someone knows something I don't.

Thanks again, guys!
Phil

[80sGuy]

Chances are yes, but the timing belt should lasts longer than 100K unless it was done by some fly-by-night mechanic w/o replacing all the other belt components such as the rollers and idler.. Also, the serpentine belt shouldn't interfere with the timing belt or how/why it broke.

[Theiceman]

i thought Audi modified timing belt intervals long ago . but not sure
The number one cause of timing belt failure as pointed out above is something else.. its usually the water pump, it seizes, the belt tears up and its over...

because you did it on the highway i would say you have a whole bunch of bent valves.

if you are a diy guy you could investigate with even a used belt just to line up and see if you have compression, or scope it and se if you can see any bent valves. But if you are paying someone to do all this at todays rates, i have bad news for you ...

Most guys on this forum would have no issues replacing the head with a good used one if pistons were okay, but this is not for everyone as you need tools, space skills and documentation.

Good luck

[Theiceman]

interesting reading ...

My advice forever around this has been "better 20,000 miles early than .1 mile too late" .

The most recent recommend timing belt replacement interval for Audi models with 2.0T FSI engine is 110,000 miles.

2005-2008 Audi A4 change interval is 90,000 to 110,000 miles* for 2.0T FSI B7 chassis.
What does Blauparts recommend? When dealing with crucial timing belt service, err on the side of caution and change your Audi A4 timing belt every 90,000 miles. It is our recommendation to closely inspect all timing belt components before the recommended interval. Play it safe, changing your timing belt may seem expensive. However, choosing to exceed your timing belt service interval is risky and can lead to unknown repair costs that will far exceed typical timing belt replacement service cost.

It is also interesting to note that the 2.0T service maintenance schedule calls for a timing belt and tensioner inspection at 60,000, 80,000, and 100,00 miles. The inspection is done by visually inspecting the timing belt and physically spinning and testing the tensioners and idlers bearings for excess play. To properly visually inspect the belt and physically spin the tensioners, the car needs to be in the timing belt service position. Considering the amount of labor just to get the car into service position, it is best to consider the cost savings and perform the complete timing belt service at the same time.

[Jayz691]

I'd say safe change interval is 80k miles, same with cam chain/tensioner.
If the belt shredded, you have bent valves. Very few get lucky at low rpm/speed, def not at highway speed.
Cheapest option is used head, do cam chain/tensioner on it, TB kit, and gaskets. Good time to do coolant flange and thermostat if it's old..
Good luck

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