dc2286

Hi all, ive just been told my 2006 hawkeye sti spec d needs a new engine/rebuild due to a knock coming from the big end. The noise is only there when the engine is warm and u can hear it most when revving up and down to about 2500rpm.

The car is full subaru service history and covered 63k. the car is completely standard.

Has anyone had similar experiences?

What is the chance of a good will claim from subaru? as i cant afford the kind of money a rebuild or new engine is goin to cost.

Any help would be much appreciated, cheers

andythejock01wrx

Piston ringland failure is a known fault on these cars - not clear just how common it is.

Bad luck mate. Where are you?

matth76

Doesn't sound good and actual bottom end failure (ie big ends knocking) is rare especially on a car only 4-5 years old. Is the oil level ok as oil starvation would be the normal culprit I believe here? Is the knocking clearly evident? The natural exhaust tone always gives a light "drum drum" tone, almost knocking-like tone when you're sat in the car, due to the un-even headers. I hope it was a specialist or main dealer you took it too, and not a local "general" garage as you need to be sure of the diagnosis.

The weak points on the 2.5 are the pistons/piston rings and headgasket (neither would normally cause the "knocking" signifying bottom/big-end failure) and even these going wrong is rare (the internet will only highlight the bad events). It's worth a try speaking to Subaru. Did you buy it from a main dealer? I'd be interested in how you get on, also to find out what caused this (!). API engines I believe do re-conditioned engines for around £1000 (possibly slightly more - someone can confirm) or Alan Jeffery (I think he does), in the west country, again very good value and both are highly recommended. £1000 may seem a lot but is worth it to keep the car running. It's not going to cost thousands like some may think. Good luck with it all. I hope it all works out.

dc2286

Im in lancashire

dc2286

Only had the car a few weeks! the oil level seems fine. I bought from a dealer (Independent) - no warranty. Thought the car would be ok to be honest its been owned by one guy from new and has been maintained properly. Strangely when ive phoned the dealer who did the last service the head gasket was also done! Just trying to work out my options. Cheers

matth76

Is the knocking quite loud (clear above the general engine/exhaust noise) or do you have to listen hard to notice it?

ritchiritch

Is the car totally standard or does it have any mods..... remap , induction exhaust or anything?

ritchiritch

sorry just read it again.... totally standard ya said.

ScoobyYau

Im suprised an independent dealership didnt even give you like a months warranty or something unless it was sold on trade terms which i doubt for a 4-5 year old car.

dc2286

He was a trader one man band type thing. He retailed the car to me. Im hoping i have some rights

dc2286

Its exactly like this one....http://www.youtube.com/watch?v=94Epk...eature=related

dpn

First of all, i feel your pain. Mines getting a full engine rebuild in Buxton by Adam at Autotecnica. Its the same car same year but only 36,000 miles. Should be getting it back next week. I've had piston failure quite badly. I would suggest that you get yourself to him seeing as your not that far away. He's been spot on so far. There's a couple of other guys on here that have had their cars with him. He comes well recommended. Good luck fella. I'm interested in what happens with yours. Keep us posted.

matth76

In the video are referring to the sound when he lets of the gas after revving it at 22secs and 31 secs in the vid (some kind of fluttering sound)? It sounded tappety at idle but that is normal, and the rest of the engine sounded fine, no knocking that I could hear (unless the sound quality doesnt show it). I have had the big ends go on a previous car (not subaru) and it was horrendously noticable. I would certainly get a second opinion if you can't easily hear it.

dc2286

Can u hear the noise on the overrun? a quick load of knocks?

dc2286

I'll bare him in mind defo. What kind of money we talking? Does yours have any mods. How come u didnt go to a main dealer to try for any kind of good will claim ....i mean yours has done little mileage!

matth76

Sorry I must have edited my post just as you replied. Yes I could hear something when he lets of the gas after revving it, like a fluttering sound on the clip but my speakers aren't the greatest, at approx 22secs and 31secs, is this what you referred to? When the engine is running at idle it all sounded fine though, tappety but fine.

chopperman

That doesn't sound like big ends to me but its hard to tell from a video clip. Also IIRC you said it gets worse when hot ? Big ends would clank more when cold or all the time if their really knackered. Check you have not got a loose spark plug, also check your pulleys to see if any of the bearing have gone on things like the alternator ect. Oil pressure check will tell if there is anything sinister going on.

dc2286

Yeh thats right. That noise is what ive got at around 22 secs and 31 like you say. My car idles fine and u cant hear it at much higher revs!?

rob84

iTrader: (5)

without looking at the car its not the easiest to diagnose via internet forums, that noise on the video could be a small chance of the timing belt tensioner rattling agains the block casing. but that would be purly a guess

dc2286

Yeh the noise gets worse when warm, i thought big ends gone would be worse too but i cant work it out at all

oobyJu

iTrader: (2)

had similar on 2L, noise most noticeable when lifting off throttle was big end failure sadly, usually caused by low oil level, oil destroyed by overheating/lack of service or thrashed when oil cold, warm is about 5 min after water gauge says ok (get some gauges).
Go and see a subaru specialist to confirm before you spend though, they will know for sure and have a list of solutions cause you sure ain't the first with that one, no comfort i know....

chopperman

Quite often when the big ends have gone the oil pressure will rise (assuming it has the right amount in the engine) This can be indicated by the oil being high up on the dip stick. Low pressure could indicate a buggered pump. Subaru's have been known on rare occasions to knock out the bottom end but its worth checking simple things first. Try putting a long screw driver on various parts of the engine with your ear on the other end. You will be surprised what you hear going on.. Good luck.

dc2286

Cheers guys, think it needs a good stripping down!

dpn

I bought it from a small dealer in Bolton. Bought in September got 6 months warranty. I was about a month out completely standard when it went to Adam. But getting it back with a forged engine an exhaust. good for about 360/400 when a remap is done. Not sure on the full price yet dos it's not finished. All I want is for it to be reliable, so I'm not going mad on the mods. He's more than reasonable tho, I looked about before I found Adam. I think that the people that sold me mine had ragged it and not cared for it as it had always been serviced regularly at Subaru dealers in the service book. I think you've got more chance of getting someone else to pay for yours as you've only bought it recently. It's worth a try.

dpn

Sorry for the typo's, freaking iPhones

Andy_engdynamic

Definately big end knock at 31 seconds.

dynamix

iTrader: (3)

The cam belt idlers are prone to going on the 2006 sti and that makes a similar noise. The small idler near the tensioner on mine went a few years ago and it sounded just like that.

Get the right hand cam cover off it and see whether there is any play in that before ripping the engine out.

Green Classic 98

Has someone changed the oil recently without filling the new oil filter with oil prior to fitting and cranking for 20 seconds before actually starting (if so it would make big end failure more likely). Can u email the guy who posted the video, find out what it turned out to be?

APIDavid

iTrader: (4)

Quite often when the big ends have gone the oil pressure will rise (assuming it has the right amount in the engine)

How do you work that out ?? When the big ends have gone there is a 4 mm gap where the bearing used to be, nothing there to prevent the oil leeching away out of the crank without building pressure.

If i can help the OP please call me, l'll talk you through the options.

David APi 01926 614333

L.J.F

iTrader: (31)

I think you should let a scooby specialist diagnose the sound and not everyone on hear as a sound clip of a similar sound aint that much help in identifying tbh