2008-2010 2.5ltr Engine Failures
Scooby Regular
Joined: Nov 2006
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From: Enginetuner.co.uk Plymouth Dyno Dynamics RR Engine machining and building EcuTek SimTek mapping
The Hawkeye 2.5's are generally ok, we've tuned plenty with no problems. We've only seen Hatches which are already broken with just one exception.
They were all stock when they first came in, apart from the one which had been slightly modified. The modified one wasn't broken, he just fancied 450 bhp!
I wonder if any dealers have had the 2011 in yet, Ive got 6k on mine and shes fine I know its early days yet, but i aint seen any posts on google saying so.
which is weird as its same engine, UNLESS Subaru have sneakily changed something I know the Maps diff in some way
which is weird as its same engine, UNLESS Subaru have sneakily changed something I know the Maps diff in some way
just an update that my 08 sti engine has did all the usual as per previous posts,had since new,serviced as per subaru iain grieves falkirk and last service was on 30400 and now sitting at 34000 miles with total loss of oil.Even though it was remapped by andy forrest and new miltek exhaust and forge air intake by litchfields ,dealer still was willing to have it in for servicing,but not willing to advise me of all the issues surrounding the engine...now out of warranty by 3 weeks they wont help me out but still expected me to bring it in to them so they can repair it..
Scooby Regular
Joined: Nov 2006
Posts: 3,662
Likes: 0
From: Enginetuner.co.uk Plymouth Dyno Dynamics RR Engine machining and building EcuTek SimTek mapping
just an update that my 08 sti engine has did all the usual as per previous posts,had since new,serviced as per subaru iain grieves falkirk and last service was on 30400 and now sitting at 34000 miles with total loss of oil.Even though it was remapped by andy forrest and new miltek exhaust and forge air intake by litchfields ,dealer still was willing to have it in for servicing,but not willing to advise me of all the issues surrounding the engine...now out of warranty by 3 weeks they wont help me out but still expected me to bring it in to them so they can repair it..
Cosworth pistons of course!
So sad I've jut seen subaru now do 320r for my saloon I've mailed Im asking if that's an option fo me or just new clients they did a free upgrade for the older hatchs
Jut keeps wArrenty in check if Subaru do it
Jut keeps wArrenty in check if Subaru do it
just an update that my 08 sti engine has did all the usual as per previous posts,had since new,serviced as per subaru iain grieves falkirk and last service was on 30400 and now sitting at 34000 miles with total loss of oil.Even though it was remapped by andy forrest and new miltek exhaust and forge air intake by litchfields ,dealer still was willing to have it in for servicing,but not willing to advise me of all the issues surrounding the engine...now out of warranty by 3 weeks they wont help me out but still expected me to bring it in to them so they can repair it..
just an update that my 08 sti engine has did all the usual as per previous posts,had since new,serviced as per subaru iain grieves falkirk and last service was on 30400 and now sitting at 34000 miles with total loss of oil.Even though it was remapped by andy forrest and new miltek exhaust and forge air intake by litchfields ,dealer still was willing to have it in for servicing,but not willing to advise me of all the issues surrounding the engine...now out of warranty by 3 weeks they wont help me out but still expected me to bring it in to them so they can repair it..
just an update that my 08 sti engine has did all the usual as per previous posts,had since new,serviced as per subaru iain grieves falkirk and last service was on 30400 and now sitting at 34000 miles with total loss of oil.Even though it was remapped by andy forrest and new miltek exhaust and forge air intake by litchfields ,dealer still was willing to have it in for servicing,but not willing to advise me of all the issues surrounding the engine...now out of warranty by 3 weeks they wont help me out but still expected me to bring it in to them so they can repair it..
IM blamed one of there dealers for an engine going again???element of doubt???,what was done at the first rebuild,1 piston authorised under warranty by them?
Last edited by scoobyseller555; May 4, 2011 at 09:10 AM.
i would find it very unlikely.but did it not get a short motor the second time following only 1 piston the first time authorised by IM. and the second time it turned a big end with no piston problems evident,all under warranty.Was yours the silver STi that we bought back from you?
It did indeed get a short motor after me and not you guys spitting the dummy with IM. Never did drive it with the new short motor, you guys did buy it back at a significant loss to me stiil quite pissed off about the whole thing to be honest, IM should have extended the warranty as a good will gesture and you guys should have tried a bit harder with them. Any how it turns out according to IM its all down to drivers abusing or modifying the cars anyway! Must say did love the car best impreza i have been in just couldnt cope with waiting for another engine failure.
Last edited by jsfb; Apr 16, 2011 at 10:01 PM.
Pardon me for getting involved here, but if a single piston has failed & has started to consume engine oil then isnt it best practise to remove the big end caps and inspect the bearing shells. 9 times out of 10 they will most certainly come back with a knocking bottom end as it will spin a bearing as the hardened coating will have started to deteriorate due to lack of lubrication ??
Hi Rob as i said i am no subaru tech like yourself, so was hoping the garage was looking after my best intrests. Maybe they did check the bearing shells, maybe they didnt but at any rate didnt take long to destroy the bottom end. Hard and expensive lesson learned for me but these guys just keeping making money at our exspence. Anyway as the subaru salesman above says anyone buying one of these cars is taking a real chance that the engine will explode at a random moment in the future and there's no way of telling if or when let that be a warning to anyone thinking of buy a hatch.
I cant comment on what work was undertaken by any dealership mentioned, but I know myself, If I know a ringland has Broken then I'd make a point of removing the bearing caps to take a look as they do deteriorate very quickly with the oil level running low.
for the sake of maybe 12 bolts it doesn't take much to split the blocks to take a look inside in all honesty, maybe that's just me being to picky but I know if it were mine I'd like to know the car was being looked after with the owners best interests at heart.
for the sake of maybe 12 bolts it doesn't take much to split the blocks to take a look inside in all honesty, maybe that's just me being to picky but I know if it were mine I'd like to know the car was being looked after with the owners best interests at heart.
I cant comment on what work was undertaken by any dealership mentioned, but I know myself, If I know a ringland has Broken then I'd make a point of removing the bearing caps to take a look as they do deteriorate very quickly with the oil level running low.
for the sake of maybe 12 bolts it doesn't take much to split the blocks to take a look inside in all honesty, maybe that's just me being to picky but I know if it were mine I'd like to know the car was being looked after with the owners best interests at heart.
for the sake of maybe 12 bolts it doesn't take much to split the blocks to take a look inside in all honesty, maybe that's just me being to picky but I know if it were mine I'd like to know the car was being looked after with the owners best interests at heart.
In the most basic term and cheapist route, what do you have to do to get the engine to how most of us would have expected Subaru to have done.
Am i right in saying just a straight piston swap to a set of cosworth ones ? anything else ? remap ?
If you didnt go cosworth, is there any even better ones ?
Also with you changing the pistons do we then open up anything else to risk ?
I'd use other than Cosworth pistons as they tend to be noisey - had them in the classic and in the hatch and I reckon its the pistons causing the phantom det I have + they were audibly noisey in the 2 litre when cold. In hindsight I should have gone for "better" pistons rather than the 15% discount on Cosworth parts
I'd use other than Cosworth pistons as they tend to be noisey - had them in the classic and in the hatch and I reckon its the pistons causing the phantom det I have + they were audibly noisey in the 2 litre when cold. In hindsight I should have gone for "better" pistons rather than the 15% discount on Cosworth parts 

Affordable ones
nothing silly like Bugatti
Just as an aside. After 24,692 views on this forum alone wouldn't it be great for Subaru to share there views. Not big or brave enough i suspect but they have pi%$&* enough of us off, lost enough custom and by the sounds of it handcuffed their dealers into towing the party line for too long.
Anything to say Subaru ???
Anything to say Subaru ???
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Just as an aside. After 24,692 views on this forum alone wouldn't it be great for Subaru to share there views. Not big or brave enough i suspect but they have pi%$&* enough of us off, lost enough custom and by the sounds of it handcuffed their dealers into towing the party line for too long.
Anything to say Subaru ???
Anything to say Subaru ???
http://forums.sidc.co.uk/topic/15318...our-questions/
Yes, seen that one, but it just raises more questions than it answers IMO.
The explanation the M.D attempts is not consistent with previous Subaru statements (to customers) and even the failure rate seems to have changed significantly which is strange given the limited number of sales.
One huge cover up, on many levels IMO. If Subaru want me to expand then lets have your views and you can have a few more facts from me.
Yes, seen that one, but it just raises more questions than it answers IMO.
The explanation the M.D attempts is not consistent with previous Subaru statements (to customers) and even the failure rate seems to have changed significantly which is strange given the limited number of sales.
One huge cover up, on many levels IMO. If Subaru want me to expand then lets have your views and
you can have a few more facts from me.
The explanation the M.D attempts is not consistent with previous Subaru statements (to customers) and even the failure rate seems to have changed significantly which is strange given the limited number of sales.
One huge cover up, on many levels IMO. If Subaru want me to expand then lets have your views and
you can have a few more facts from me.







