Thought i’d post this here maybe good for a Project A4 s4 upgrade? lol
5,000 for an engine with 100,000 miles on it. Not sure what to say. Interesting find though.
Wonder if there’s any new ones kicking about in crates.
Was looking for parts came across it seemed relatively inexpensive.
Nice find.
I found this
http://dutamasengines.com/products/Audi-S5-2013-3.0T-Engine-including-Supercharger.html
That says something. When you look at the price.
Hopefully they don’t have holes in them like the one that poor guy on AZ bought.
Oh wow that would suck. That takes things from a good deal to a shit deal.
what happened?
I haven’t even heard of a B8 S4 blowing an engine other than the early REVO tuned guys
Not trying to pee in anyone’s cheerios here, but IMO, any used RS4 motor without compression test & leakdown results is good for parts, a core, or a coffee table. We’ve all seen issues with sub-par fuel injector condition slowly killing rings & scoring cylinders. If you believe that the used RS4 motor you buy off eBay or from a dismantler is going to be the golden ticket that never had these problems, I know a prince in Nigeria you should meet.
Koolade. I always love reading everything you post. If its not an issue can you consider posting more about the injectors causing issues with rings and cylinders. I have been searching for a V10 S6 for a few months now and Im seeing some cars with weak compression results on specific cylinders. Group that with what I have been seeing with all the issues with weak injectors I would love to have a refrence thread to share with the V10 and obviously the V8 guys on the seriousness of weak injectors. I think this is a much bigger issue than some understand.
This subject right here makes me nervous, seen some posts on injector issues and because they were never considered by most to be a serviceable item the mostlikely source to blame was the most recent tune or shop that worked on it last.
How likely are these injectors to fail and if so do they have a certain life span and would that span be mileage or time/years related?
And if you bolt a charger on the car, how would that affect the lifespan or service period on the injector’s or won’t it?
Getting a thread on this subject going would be great!!
I wish I could post more concrete evidence…IMO, the catastrophic problems happen when you have leaky injectors, and the car sits the majority of the time. Every time you open the driver door, you’re priming the low-pressure fuel pump, and essentially the system. If the engine isn’t fired, that fuel pressure will relieve itself via the leaky injectors, onto your pistons & rings. How much fuel does it take to wash away the oil from your cylinder walls or pool around the ring lands? Not sure, as most people just throw away their engine block or exchange it as a core before any solid diagnosis.
Cars that have never had a carbon clean performed, could technically have cleaner injectors, as the high pressure lines would’ve never been exposed to air/particle contamination. That’s one source of potential injector failure. Another is just a function of build-up that accumulates over time and goes unaddressed. Komseh said when Race City took his apart, they found sludge. Not sure exactly what that means, but it certainly doesn’t call for a happy dance. I’m not sure if we, as a community, have a solid idea of how long we should go between injector maintenance events. 20k, 50k, 60k?
I’m not really up to date on the stuff on the other side of the pond, what you wrote here suggests a considerable number of failures have happened - how many? And how many have broken their engines without strapping a blower to it that Audi never intended to be there?
Only asking because, back over at rs246.com, I just can’t find evidence of these engines failing with any regularity. Aside from the somewhat embarrassing power losses over time these engines actually seem to be very reliable. Certainly relative to, say, the average BMW M engine.
In naturally aspirated form I think there is a lot of margin for error with injectors, obviously we all want the best and most consistent spray across all eight in an ideal scenario but it doesn’t seem critical unless you go forced induction.
This isn’t a matter of engines failing left and right. It’s a slow death. Those power losses can be attributed to low compression and/or poor injector spray patterns. Currently, we blame the mysterious carbon monster. There’s also the matter of excessive positive crankcase pressure un-seating rings and exacerbating the issue, but let’s not make it more complex than it is. Ask the guys on 246 to run a compression test and post up their results. Feel free to prove me wrong.
I was just curious on what kind on the extent of failures at your end really, I can’t really argue something I have little data on 
But it’s customary to support a hypothesis with evidence rather than accepting it pending anything that disproves it turning up.
Have many people seen poor compression results on cars that otherwise appeared fine? Bit tricky to move people to do large scale compression testing sadly so I don’t think we can expect much data from owners.
A slow death still ends with death, in any case. Some would fail earlier than others, the old bell curve, and given that we’re now 10 years down the line and many engines have more than 100K miles on them I’m genuinely interested in the overall failure rates. They do not appear unusually high for this type of engine to me, a perception based pretty much entirely on observing forums so a grain and a half of salt may be added there.
Unscientifically, I can also say I’ve seen a lot more potential engine “issues” on the German board than than the UK one by the way. Not that they’re blowing up, but high oil consumption seems to be the norm in Germany but not at all in the UK. A Belgian guy I know did replace his old engine (140K very hard miles) when oil consumption threatened to overtake regular fuel use, I have no doubt his compression was ugly, it definitely happens.
But it happens everywhere to varying degrees. Seen lots of E36/E46 M3 engines perishing, obviously a different kind of car with a different kind of user. Porsche engines, same thing. Even the ones that have the tag “bullet proof” can and do develop issues. My old Volvo scene often seemed like a vast expanse of rod-bending misery. That’s just impressions you get in clubs and online, not representative of overall failures by normal customers.
Still, most of the performance that goes missing in the B7 can be resurrected at least temporarily in most cars on the UK board that have undergone an expensive stage 0. The worst performing cars almost invariably have a combination of carbon, vacuum leaks, faulty sensors and whatnot. Carbon can be pretty bad but not 300 peak crank horsepower bad. I’d say the same about poor compression/engine issues. If you start to lose serious amounts of power due to compression loss your engine is not much longer for this world. It would continue to deteriorate reasonably rapidly until the problems could no longer go unnoticed or ignored.
That’s my point of view, anyway.
Rudi, funny you say that but i was just thinking the same. I theyll part of my next order with Dru@JHM. I mean mine have done close to 150k kms.
for the money its just not worth it. But yours is super low kms so i doubt you would have anything to worry about.
This is something that is very big with the V10 guys. They start seeing serious issues with the FSI injectors and missifres and performance issues. I got some JHM cleaned flowed and sealed injectors. It’s money well spent. They have a better Teflon seal and the testing is actually in a range that the cars run in and not just 5 bar like other companys. JHM tests them at over 100bar. Smart money. When you up the cylinder pressure with more power its a good idea to make sure the injectors are running well. Its not uncommon to have some injectors down by as much as 40% that is a big gap and missing on that much fuel flow will cause issues.
http://audirevolution.net/addons/albums/images/123636533.jpg