2008-2010 2.5ltr Engine Failures
#2071
Scooby Regular
Thanks John 37, will see what kind of wear it's got when it comes out.
Got the compression results the other day, not quite what I was expecting... Cyl 1 - 102, 2 - 130, 3 - 110, 4 - 130.
We'll have to wait & see what reveals itself when the heads are off.
Also found out that the dealer fitted Bosch plugs on the last change, not impressed.
Andrew
Got the compression results the other day, not quite what I was expecting... Cyl 1 - 102, 2 - 130, 3 - 110, 4 - 130.
We'll have to wait & see what reveals itself when the heads are off.
Also found out that the dealer fitted Bosch plugs on the last change, not impressed.
Andrew
#2072
Scooby Regular
At 64k I would change the friction plate, release bearing and flywheel bearing. It's too much of a job to jot change them. Just consider not replacing the cover plate assembly.
your compression results are worrying. You may be able to see more when the heads are off but don't count on it. I replaced my head gaskets and was disappointed to not see any damage.
I don't want to worry you but many others have advised a bottom end rebuild while the engine is out.
your compression results are worrying. You may be able to see more when the heads are off but don't count on it. I replaced my head gaskets and was disappointed to not see any damage.
I don't want to worry you but many others have advised a bottom end rebuild while the engine is out.
Last edited by John 37; 01 February 2020 at 06:37 PM.
#2073
Scooby Regular
Finally the rebuild is complete.
As previously mentioned the head gasket on the left (cylinders 1 & 3) had failed, but turns out the loss of compression on that side was due to leaking exhaust valves.
Bores were in good condition and the pistons didn't necessarily need replacing, but I decided not to risk the possibility of a future ringland fail and get forged pistons fitted.
So heads, blocks & flywheel machined. New bearings, Omega pistons, proper head gaskets, head studs as well as all the other usual stuff like oil and water pumps, modine, cambelt etc and of course a new Exedy clutch plate, cover and bearings.
Collected it today and it runs as smooth as silk, just got to run it in for a 1000 miles, have an oil change and then back to business as usual.
I can't thank Howard at HDC enough for being able to fit the job in amidst all his other work, for his help and advice and for putting up with me constantly mithering him!
That said, I can feel nothing but contempt for Subaru and their use of what can only be classed as substandard parts on these engines.
As previously mentioned the head gasket on the left (cylinders 1 & 3) had failed, but turns out the loss of compression on that side was due to leaking exhaust valves.
Bores were in good condition and the pistons didn't necessarily need replacing, but I decided not to risk the possibility of a future ringland fail and get forged pistons fitted.
So heads, blocks & flywheel machined. New bearings, Omega pistons, proper head gaskets, head studs as well as all the other usual stuff like oil and water pumps, modine, cambelt etc and of course a new Exedy clutch plate, cover and bearings.
Collected it today and it runs as smooth as silk, just got to run it in for a 1000 miles, have an oil change and then back to business as usual.
I can't thank Howard at HDC enough for being able to fit the job in amidst all his other work, for his help and advice and for putting up with me constantly mithering him!
That said, I can feel nothing but contempt for Subaru and their use of what can only be classed as substandard parts on these engines.
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#2074
Scooby Regular
well at least yours is sorted now , i agree very poor of subaru and not even honest enough the accept the issues , if you are american then you seem to be having more luck than the uk over this , why could they not base the 2.5 more on the 2 litre as far as spec allows and have similar reliability
#2078
Scooby Regular
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#2080
Scooby Regular
BPR , whilst you are on the site could you have a look at my thread on sports cat on a fsti and impart your knowledge please cheers , it would be good to find out how many have Not failed and mileage and tune etc
#2082
Scooby Regular
iTrader: (3)
My engines gone
2009 STI Hatch, standard other than PPP which was fitted at 2000 miles old.
Only had it for a month and covered 500 miles .
To be fair to the previous owner, there were no signs of it going until just now when started to knock under load.
I know what you're all thinking - I've thrashed the hell out of it being a new car but that's not the case. I've driven around like miss daisy and spent a small fortune on servicing myself since owning - oil change, coolant flush, new plugs etc.
Date bought: 2/12/2020
Mileage: 62900
Date of failure: 3/1/2021
Mileage: 63346
Outcome: Bottom end knocking
Anyway, time for a rebuild. What a ****e time of year to go
2009 STI Hatch, standard other than PPP which was fitted at 2000 miles old.
Only had it for a month and covered 500 miles .
To be fair to the previous owner, there were no signs of it going until just now when started to knock under load.
I know what you're all thinking - I've thrashed the hell out of it being a new car but that's not the case. I've driven around like miss daisy and spent a small fortune on servicing myself since owning - oil change, coolant flush, new plugs etc.
Date bought: 2/12/2020
Mileage: 62900
Date of failure: 3/1/2021
Mileage: 63346
Outcome: Bottom end knocking
Anyway, time for a rebuild. What a ****e time of year to go
Last edited by prodrive.greeny; 03 January 2021 at 03:32 PM.
#2083
Scooby Regular
My engines gone
2009 STI Hatch, standard other than PPP which was fitted at 2000 miles old.
Only had it for a month and covered 500 miles .
To be fair to the previous owner, there were no signs of it going until just now when started to knock under load.
I know what you're all thinking - I've thrashed the hell out of it being a new car but that's not the case. I've driven around like miss daisy and spent a small fortune on servicing myself since owning - oil change, coolant flush, new plugs etc.
Date bought: 2/12/2020
Mileage: 62900
Date of failure: 3/1/2021
Mileage: 63346
Outcome: Bottom end knocking
Anyway, time for a rebuild. What a ****e time of year to go
2009 STI Hatch, standard other than PPP which was fitted at 2000 miles old.
Only had it for a month and covered 500 miles .
To be fair to the previous owner, there were no signs of it going until just now when started to knock under load.
I know what you're all thinking - I've thrashed the hell out of it being a new car but that's not the case. I've driven around like miss daisy and spent a small fortune on servicing myself since owning - oil change, coolant flush, new plugs etc.
Date bought: 2/12/2020
Mileage: 62900
Date of failure: 3/1/2021
Mileage: 63346
Outcome: Bottom end knocking
Anyway, time for a rebuild. What a ****e time of year to go
#2084
Scooby Regular
My engines gone
2009 STI Hatch, standard other than PPP which was fitted at 2000 miles old.
Only had it for a month and covered 500 miles .
To be fair to the previous owner, there were no signs of it going until just now when started to knock under load.
I know what you're all thinking - I've thrashed the hell out of it being a new car but that's not the case. I've driven around like miss daisy and spent a small fortune on servicing myself since owning - oil change, coolant flush, new plugs etc.
Date bought: 2/12/2020
Mileage: 62900
Date of failure: 3/1/2021
Mileage: 63346
Outcome: Bottom end knocking
Anyway, time for a rebuild. What a ****e time of year to go
2009 STI Hatch, standard other than PPP which was fitted at 2000 miles old.
Only had it for a month and covered 500 miles .
To be fair to the previous owner, there were no signs of it going until just now when started to knock under load.
I know what you're all thinking - I've thrashed the hell out of it being a new car but that's not the case. I've driven around like miss daisy and spent a small fortune on servicing myself since owning - oil change, coolant flush, new plugs etc.
Date bought: 2/12/2020
Mileage: 62900
Date of failure: 3/1/2021
Mileage: 63346
Outcome: Bottom end knocking
Anyway, time for a rebuild. What a ****e time of year to go
forge, closed deck it and away you go dude get it built by a reputable place though
#2086
Scooby Regular
Sorry to all those that have had to put up with these failed 2.5 engines.
To save me searching and reading all the reports on the net about these failed 2.5 Subaru engine issues, why have Subaru not been held more accountable, it's basically a rally pedigree car that should have a strong engine, this doesn't seem the case from what has been reported by owners.
To save me searching and reading all the reports on the net about these failed 2.5 Subaru engine issues, why have Subaru not been held more accountable, it's basically a rally pedigree car that should have a strong engine, this doesn't seem the case from what has been reported by owners.
#2087
Scooby Regular
iTrader: (20)
Sorry to all those that have had to put up with these failed 2.5 engines.
To save me searching and reading all the reports on the net about these failed 2.5 Subaru engine issues, why have Subaru not been held more accountable, it's basically a rally pedigree car that should have a strong engine, this doesn't seem the case from what has been reported by owners.
To save me searching and reading all the reports on the net about these failed 2.5 Subaru engine issues, why have Subaru not been held more accountable, it's basically a rally pedigree car that should have a strong engine, this doesn't seem the case from what has been reported by owners.
they didn't move with the times hence most modern diesels will show the latest wrx sti a cloud of dust.
**** subaru.
Nuff-said
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#2090
Scooby Regular
subaru’s engine failures were certainly part of their decline in sales , they did not get the diesels right either with the broken crank shafts , and now it’s appears difficult to get a new performance subaru
#2091
Scooby Regular
iTrader: (4)
that and the fact Subaru Europe are not interested in performance anything anymore they will focus on the Forester and Levorg as thats where the money is, bland as they are its what they sell now.
No coincidence the engine has essentially been the same for more than 20 years, its not worth investing in.
No its not really a rally car anymore Prodrive didn't even use the 2.5 lump in the works cars and I believe Subaru Rally team use a 2.0 as well.
No coincidence the engine has essentially been the same for more than 20 years, its not worth investing in.
No its not really a rally car anymore Prodrive didn't even use the 2.5 lump in the works cars and I believe Subaru Rally team use a 2.0 as well.
#2092
Scooby Regular
The production of JDM version WRX, WRXSTI and Levorg models has currently ended and production for Australian and US versions (fewer emission restrictions than Europe) ending, I believe, with the current MY21.
A new JDM Levorg is due for release at the end of this March with hopefully WRX and WRXSTI to follow later this year and next as MY22/23 versions ??.
Whether or not, any will follow to Europe we will have to wait and see.
A new JDM Levorg is due for release at the end of this March with hopefully WRX and WRXSTI to follow later this year and next as MY22/23 versions ??.
Whether or not, any will follow to Europe we will have to wait and see.
#2094
Scooby Regular
WRX - 290ps and CVT WRXSTI - 400ps and 6MT
The original Japanese "Best Car" article has more info, translation below
http://translate.google.com/translat...scoop%2F250579
Whether both or neither make it to Europe we will have to wait and see.
The original Japanese "Best Car" article has more info, translation below
http://translate.google.com/translat...scoop%2F250579
Whether both or neither make it to Europe we will have to wait and see.
Last edited by Don Clark; 02 March 2021 at 01:08 PM.
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#2096
Scooby Regular
The new Levorg STI Sport
#2099
Scooby Regular
iTrader: (6)
Last edited by BrownPantsRacing; 08 May 2021 at 10:29 AM.
#2100
Scooby Regular
As far as short block assembly concerned.
Early MY08 10103AB850
Late MY08 > Mid MY09 *AB950
Late MY09 > Early MY18 *AC050
Late MY18> *AC890
All original part numbers supercede to 10103AC890