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Old 06-15-2010, 08:09 PM   #1
Layvon
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Default 2000 2.5RS motor / trans rattle

Helped my friend take apart his 2k 2.5RS last two nights and before hand he showed me this noise that it made. And I was hoping NASIOC could identify this for us before we proceed.

A little back story, the car has been making this noise for 30k, the previous owner thought it was a normal subaru noise, yes before the buyer gets ripped into, we know it isn't normal, but the deal couldn't be passed up.

Engine bay


Interior

The car leaks oil, which between the dipstick that was held on by some unknown subastance, and the really bad rear main seal, we've determined the oil leak (we think) . Yesterday the engine was fully removed from the vehicle and now sits on an engine stand waiting on parts to be installed.

Rear Main.




The big question is... Is what parts are needed?
The flywheel has a burn mark on two of the sides, which lead us to believe that it was out of true, but not positive, the pressure plate had the same markings as the pictures will hopefully show. The clutch was slipping under decent load in first and second, but after seeing how much oil was in the bell housing, this is not surprising. End result, clutch kit w/ flywheel ordered. Rear main seal ordered. New oil pan and gasket ordered.





The next question is this thunking that the videos will show, we were thinking that it might be motor or tranny mounts, but after we got the motor out, it is clear that they aren't OEM mounts, more like subaru STi ones or groupe N mounts.

Next, the timing belt, one of the rollers has the ever so slight bit of play in and out of the motor, we're talking like less than 1mm of travel, is this bad?
I was told today that timing belts look the same or similar 50k down the road as they did new, should this just be replaced regardless of what it looks like? (keep in mind that the motor is on a stand right now, very accessable and an hour of work at this point)

Here's something neither one of us had run into before, was the RTV that was near the headgasket, makes us wonder if the owner before did the headgasket himself/hodgepodge shop / ??? We're fairly certain that the gasket has been replaced at least once, but when is a mystery.

Lastly, and most sad is the results when we turned over the oil pan. There were shavings of metal in the oil pan : ( . They were not magenetic, so that rules out cast iron and steel. The shavings looked like an aluminum metal, but found out today that the bearings could contain brass, which when covered in oil, could possibly be what's in there...

Metal shavings


Neither of us are subaru pros (yet) and we want some more opinions of those who have been playing the game for longer than us.

Thanks!
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Last edited by Layvon; 06-15-2010 at 08:25 PM.
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Old 06-15-2010, 10:32 PM   #2
Layvon
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8 Views and no gripes? Cmon nasioc.
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Old 06-15-2010, 11:24 PM   #3
dstan
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sounds exactly like my motor when it spun a rod bearing
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Old 06-16-2010, 07:30 AM   #4
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I'm no RS guru, but having listened to both videos it sounds more like an exhaust leak than anything that pops into my head. Get under the car and check all the piping with special attention to the couplings that connect components. Any black couplings or obvious holes are your keys and be sure to have a flashlight and inspection mirror (or little girly mirror instead ) to check thinks you can see on the backside of pipes. After a really good look, I'm hoping you'll see the problem. If not, post #3 would be your best idea which is the expensive option. Getting a sample set to www.blackstone-labs.com can confirm or deny any internal problems.
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Old 06-16-2010, 07:55 AM   #5
Layvon
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Thank you both very much for helping,

Quote:
Originally Posted by dstan View Post
sounds exactly like my motor when it spun a rod bearing

That is what we were afraid of, but this noise has persisted for 30k. Possible to last that long with a spun bearing?


Quote:
Get under the car and check all the piping with special attention to the couplings that connect components
And thanks for the idea to look at the exhaust, we'll be executing the KISS method from the get go when we start reassembling motor.
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Old 06-16-2010, 11:27 AM   #6
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my first thought is the sound sounds like a spark plug that isnt threaded in all the way. metal shavings in the oil pan give it a death sentence.
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Old 06-16-2010, 12:08 PM   #7
Layvon
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The spark plug idea might be feasible also, all really good things to look at.
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Old 06-16-2010, 10:25 PM   #8
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metal shavings, eh? since the engine is out, may as well split the block and have a look at the bearings. I had rod knock for a year before fixing it, so they can go that long.

Why are you buying a new oil pan? If all of your timing belt pulleys are solid and only 1 moves, that tells me something.
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Old 06-16-2010, 10:45 PM   #9
kyle-vick
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We are buying a new oil pan because the other one had the dip stick JB welded in, and was leaking. What does that tell you about the belt pulleys? Oh yeah, I pulled the heads off tonight, and found piston 1 was a little seized.
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Old 06-16-2010, 10:56 PM   #10
Layvon
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Quote:
Originally Posted by yarrgh View Post
if all of your timing belt pulleys are solid and only 1 moves, that tells me something.

Not move move... they all spin, one has a little wobble perpendicular to the plane of rotation
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Old 06-16-2010, 10:59 PM   #11
Layvon
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And KV, how bad was that cylinder? Wish I could have came out tonight, I bought two things for the A4 that will hopefully help bring reliability up!
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Old 06-16-2010, 11:40 PM   #12
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Piston needs to be replaced but I think the cylinder will be fine with a little honing!
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Old 06-16-2010, 11:52 PM   #13
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Quote:
Originally Posted by Layvon View Post
Not move move... they all spin, one has a little wobble perpendicular to the plane of rotation
I didn't say it clear enough. Yes, they all spin, but if one of them is not like the others...it's probably in your best interests to replace the odd wobbly one.
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Old 06-17-2010, 07:56 AM   #14
dstan
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Quote:
Originally Posted by Layvon View Post
And KV, how bad was that cylinder? Wish I could have came out tonight, I bought two things for the A4 that will hopefully help bring reliability up!
so what car did you get
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Old 06-17-2010, 10:40 PM   #15
Layvon
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I have a GAY4. I wanted an RS really bad, but I couldn't find any for sale in my area when I got in my accident last fall

As far as parts though I got a VAG-COM last night, and a oil level sensor gasket. real exciting. woohoo.
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