Audi UrS4 AAN Engine Failure Tear Down and Inspection
ฝัง
- เผยแพร่เมื่อ 5 ต.ค. 2024
- What is up youtubes? We are here today to take a peek inside this notorious home built 5 cylinder engine and find out what caused the engine to fail. Needless to say I was very shocked at the condition of the internals after these last few years of excessive abuse. It's hard to kill an AAN!
I've got plenty of footage and creativity for the channel this year, I just have to find the time to get the builds done and get the footage uploaded so I appreciate your patience. I work long hours at my job so I have very little time for my own projects. It gets very tough at times but the support from the channel really keeps me going!
You guys are gonna love the next video, I've got some real goodies to show you ;)
MOD LIST
1994 Audi S4 230k miles
-Borg Warner S257sxe turbo 30psi of boost .82 turbine housing
-7A Intake and Exhaust camshafts
-Scat forged rods with ARP rod bolts
-ARP main studs and head studs
-South bend 7A stage 4 EXTREME clutch
-Fidanza 7A light weight flywheel
-VEMS ECU on E85 tuned by quattro4life
-FIC 1200cc injectors with 5bar FPR
-Walbro 450 fuel pump x2, fitted in factory basket
-Full 3" stainless steel exhaust with 18" Vibrant resonator
-Custom Front mount intercooler and piping
-993 porsche 911 front brakes
-Koni shocks with v8 H&R springs
-01E 5-speed trans for now
-Stage III Driver Mod?
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Down, but certainly not out. Like a phoenix she will once again rise from the ashes and prevail...
I've got some fun stuff planned for this car and the channel so stay tuned! Thank you guys so much for all the comments, likes and support on that last video. You guys are da bomb .com ;)
Hell Yeah Brother!!!! Make like Herb Alpert and RISE!!!
These AAN rebuild videos are getting me pumped to finally tear down my 3b. Great work man 💪 You in WA too?
Do it! These engines are easy to tinker on. Sorry friend, I'm on the other side but thanks for watching!
You've got the right attitude Q4L, and I'm excited to see her rebirth!
Something I often have to remind myself with project cars, especially when I'm 10 hours deep into a job that was supposed to take 2... if it was easy, everybody would do it! _Everybody_ would have a monster, if it was easy... but it takes time, effort, energy, and yes cold hard cash too. Especially on the internet, lots of folks are "bout that life" until they throw a rod or something, then it's "fk this money pit!!!"
That engine was well maintained. You did a good job.
Finally the follow up. Getting my 🍿 ready
Good news that nothing was broken, bore it out .5mm over and pick up that set of JE's for sale on the FB group.
Also, Adam from Challenge Motorwerks can hook you up with another clutch for a solid price. he charged me $650 for the Stage 4 Extreme sprung single mass.
Have to say these bottom ends are so strong. Just hearing how you threw it together. Not even balanced....yikes! 😂
I didn't have it balanced or line honed, but I rigorously checked all clearances and specs on the bottom end. Everything looked really good so I sent it. For the price those scat rods are very good quality, they came in not far out of balance at all so again, I sent it. Thanks for watching!
Make sure to replace that white oil pressure sensor with a new high quality one to avoid the possibility of an oil leak. Ask me how I know.
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Enjoying your channel, keep up the good work, it is appreciated.
👍🏻
I'm truly sorry about your piston situation. But it's a Beautiful Engine! Thanks for sharing your great knowledge and insight! I can't wait to see your next video!
Good advice on the oil change, expensive but I can see a huge difference!
This is not my daily anymore. I usually just take it out on weekends so it takes me a good 5-6 months to roll over 1,000 miles so I think that is pretty cost effective. However, I do get my oil and filter for free at work so it doesn't hurt for me to change it excessively ;)
@@quattro4life20vt Oh man, that is WINNING!
Running e85 is another reason to frequently change the oil. I do the same on my Volvo, every 1,000-1,500 miles she sees fresh oil.
Totally unrelated, but I saw in the C4 groups that you build your own downpipes. I’ll only be running a 7400 till I get another bottom end built, and it’s kind of a “budget” build. Thought about sleeving where the wastegate recirculates and dumping it, and then chopping it at the weld where it splits and going 3” from there. Was also told to get in contact with you and see what you’d charge to make a downpipe and dump tube. Love your videos btw, been following a while now!
Hi Master AAN, happy to hear you and learn which parts failed on your funf zylinder 😉
Same thing on my s2 co worker
Brock the end of the cam on a launch
Fdb ça ne serait jamais arrivé avec de l’huile norauto 😂
Maybe that is what happened to mine, I have launched it pretty hard a few times since I had the valve cover off last. Oh well, thanks for watching friend!
Apparently I have a 92 S4 I had a engine rebuilder rebuild my 2.2 rebuilt. It's been a long time. I finally got rid of the engine rebuilder. It needed a ECU. I took it to a Audi specialist? After 3 grand. He said it now needs a oil pressure pump? He said There's a oil pressure sensor. But he doesn't have the tool to check it. As in all things. If you want it done right. Do it yourself! Do you know what tool for the wide oil sensor with 2 prong removal tool and where I might get it? Great video.
Cant wait for this thing to get back on the road!!!
Interested to hear how you feel about shortblocks. The AAN are hard to find. I kina like leaving my running AAN together.
Pro/con of grabbing another 5 cyl shot block to build up? Pistion oil squirter nessisary? I guess one major con would be you're buying good pistons, but is that really?
Yes put for bottom end bilet main caps and grid low compression pistons and gorila rods, also dry samp lubrication system, head should be getting new valve train and valves it self.
And if yuo make bores stronger than yuo can go 1000 hp or more but block must be drilled out for long studs from head to the botom end
Nice work buddy. Ive been watching alot of late. This engine build was / is the same as what im finishing up aswell. Excited to see the damage was minimal.
Did you do a main cap hone for the ARP mains? Or just slap them in? I had ARP mains but never used them.
I didn't have it line honed, when I removed the crank and bearings I reinstalled the main caps with arp studs and checked the roundness with a dial bore gauge.
They were all perfect so I felt comfortable reassembling as is. Checking specs is a good way to sleep better at night but I do recommend line honing for arp studs as I will this time. Thanks for watching!
@@quattro4life20vt i went back and forth on my build, decided to use the OE mains but i did ballance the bottom end. The build i have now mimics your bottom end for sure. Super excited to see how it turns out and what your plans are.
Change the bottom cam belt pulley otherwise you will have a lot of unwanted costly issues sooner rather than later. I’m speaking from experience
So. I should cut the gear off my 7a cams before installing. Got it.
What oil do you use and what ring gap do you use????? thank you for the video!
Looks like he said Mobil 1 0w40
Currently balls deep into an AAN build and turns out the ARP main studs I have are too short lol which ones did you go with??
Quick question for you, would you happen to have a link to the oil drain return flange on the block? Thank you!
I use the same -10 oil return flange that I use for the garrett turbos. It is the same size and will fit on the block. I will show this at some point when I make the oil lines for the budget build car turbo kit. But for now I'll leave you a link if that helps ;)
www.ebay.com/itm/124196646269
@@quattro4life20vt thank you!!
Hey buddy, 1 more question, what was your PCV setup?
I got my cam broken in the same way about 2 weeks ago😩
there's no way that engine would not start cause bad piston rings. no way. there's compression leak somewhere, double check everything.
I have an early 92 S4 with the tuna can and the gear on the end of the camshaft. Would that indicate 7a cams? Or were some AAN cams equipped with the gear?
No, the 7A cams come from the normally aspirated 90 quattro 20 valve or Coupe quattro 20 valve in the early 1990s. They were a common (less expensive) modification than fitting the RS2 (ADU) cams. So in a nutshell, someone would have had to swap in the 7A cam on your car at some point.
Do you reccommend all OEM gaskets/seals? Theres companies like victor reinz, erling etc.
No way, too expensive! All of these gaskets and seals are Victor Reinz and I recommend them as they did great over 5 years and I could probably still reuse all of them. Valve cover, cam seal, front crank seal, mls head gasket, oil pan and pump gasket etc etc. I only get the rear main oem, buy the cheap one and compare. You will see what I mean.
@@quattro4life20vt i used vr on mine also when the oem paper(or whatever the material is) gasket blew. And no issues. But 3 months later it got bearing failure. Now planning a rebuild and you as a inspiration, thats why i thought if you either used all oem or if you guys also have these common companies gaskets etc over there. So thanks for the answer!
did you hawe used stock pistons?
So this block never went to the machine shop, but has ARP main studs?
That is correct, it would have been in my best interest to drop it off and get it decked and line honed/bored for the studs but because of circumstances at the time I was only able to drop off the head.
With the crankshaft and main bearings removed, I torqued the main caps with the arp studs and checked the roundness with the dial bore gauge. They were all perfect, so I was confident enough to reassemble it as is.
I know of a few shop built/tuned engines that didn't last half as long as this home built AAN and I will always be proud of that. Long live AAN!
You are going to love the next phase for this car, I've got some badass shit coming soon so stay tuned and thanks for watching! P.S. post more videos, we need more videos thanks!
@@quattro4life20vt love to hear more crazy stuff coming...
I will definitely try to document my AAN stroker build soon...
The season is upon us and hopefully we can get all our cars together at some point
Is there anyway i can contact you? I want to ask you some questions
What oil do you use? I’m thinking switching to Castrol 5w50.
I have always used 40 weight oil in this engine. Mobil 0w40 just because it's very cheap at Walmart. If they made it in 5w40 I would probably run that. Thanks for watching!
Where can I get a torque wrench like that?
It's a snap on digital 3/8 torque wrench, many different companies make them now. You can find anything on the web these days, thanks for watching!
@@quattro4life20vt idk man, can't like find a decent one
@@aivo3091 the one I have is not cheap, I think I bought it from snap on for around 400. There are quite a few of them online for a decent price. I'll leave you an example...
Amazon.com: QUINN 3/8 In. Drive Digital Torque Wrench: Home Improvement
www.amazon.com/QUINN-Drive-Digital-Torque-Wrench/dp/B07VNTQGPL
Do you have a Instagram? Facebook?
What power levels (hp) roughtly are you seeing with these modifications?
600whp easy
🎵🎶30lbs of booooost🎶🎵