2.5 engine ?
#1
2.5 engine ?
Ive heard the 2.5 engine is not as good as the 2.0 engine because of head gasket problems , just wondering if this is true . Also is the sti 2.5 engine just as bad as the wrx 2.5 engine . If head gaskets go is there a better solution of fixing them ,what i am trying to say are they as bad as the rover engines of old
#3
The 2.5 is a great engine, for road manners/drivability/torque theres no replacement for displacement.
Uprate the HG's, studs, and a lower rating thermostat to keep the temps in check and theyre pretty bomb proof.... oh and get a reputable mapper rather than someone who likes to venture too far into det to find the limits.
For big power then the cdb2.2 builds are stronger, but for most peoples mid power builds I think theyre the block to go for.
Ive got a fresh ej257 for sale if needed.
Uprate the HG's, studs, and a lower rating thermostat to keep the temps in check and theyre pretty bomb proof.... oh and get a reputable mapper rather than someone who likes to venture too far into det to find the limits.
For big power then the cdb2.2 builds are stronger, but for most peoples mid power builds I think theyre the block to go for.
Ive got a fresh ej257 for sale if needed.
#4
I thought the 2.0 engines were better , the reason for the question was i am thinking of getting another scooby ,do i go for a classic or bugeye as ive got around £4000 to spend on a second car or do i go all in part ex my hyundai tucson and have around £7500 to £8000 and get 2.5 hatch as i need room in the boot for the dog
#5
Betters a bit of a sweeping statement isn't it?
You might want to quantify it a bit.
A good 2.5 against a good 2.0 ..... all other things being equal the 2.5 takes it purely on torque surely. :-)
You might want to quantify it a bit.
A good 2.5 against a good 2.0 ..... all other things being equal the 2.5 takes it purely on torque surely. :-)
#7
Yeah, theres a lot of forum warriors out there who like something to latch onto and make discussions very one sided for no other reason than they want something to complain about..... shame really as because theres so many of them they tend to get listened to.
My 2.5's had a moderate amount of work, a nice conservative map to 440/440 and its been going for years and taking all the track time I can throw at it ..... so glad I didn't believe all the "chocolate" BS and just get the 2.0 rebuilt.
My 2.5's had a moderate amount of work, a nice conservative map to 440/440 and its been going for years and taking all the track time I can throw at it ..... so glad I didn't believe all the "chocolate" BS and just get the 2.0 rebuilt.
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#9
Its a low mileage (18k) ej257. Unopened long block with single AVCS heads.
I bought it a year or so ago with plans for a project, but since then a change of job/house has changed things and its surplus.
If someone just wanted a short block we could come to an arrangement im sure.
Steve, sorry to hijack the thread ...... but have you considered a forester sti at that price range? the dog would love it! :-)
I bought it a year or so ago with plans for a project, but since then a change of job/house has changed things and its surplus.
If someone just wanted a short block we could come to an arrangement im sure.
Steve, sorry to hijack the thread ...... but have you considered a forester sti at that price range? the dog would love it! :-)
#10
Its a low mileage (18k) ej257. Unopened long block with single AVCS heads.
I bought it a year or so ago with plans for a project, but since then a change of job/house has changed things and its surplus.
If someone just wanted a short block we could come to an arrangement im sure.
Steve, sorry to hijack the thread ...... but have you considered a forester sti at that price range? the dog would love it! :-)
I bought it a year or so ago with plans for a project, but since then a change of job/house has changed things and its surplus.
If someone just wanted a short block we could come to an arrangement im sure.
Steve, sorry to hijack the thread ...... but have you considered a forester sti at that price range? the dog would love it! :-)
#11
Scooby Regular
iTrader: (1)
The 2.5 is a great engine, for road manners/drivability/torque theres no replacement for displacement.
Uprate the HG's, studs, and a lower rating thermostat to keep the temps in check and theyre pretty bomb proof.... oh and get a reputable mapper rather than someone who likes to venture too far into det to find the limits.
For big power then the cdb2.2 builds are stronger, but for most peoples mid power builds I think theyre the block to go for.
Ive got a fresh ej257 for sale if needed.
Uprate the HG's, studs, and a lower rating thermostat to keep the temps in check and theyre pretty bomb proof.... oh and get a reputable mapper rather than someone who likes to venture too far into det to find the limits.
For big power then the cdb2.2 builds are stronger, but for most peoples mid power builds I think theyre the block to go for.
Ive got a fresh ej257 for sale if needed.
Yeah, theres a lot of forum warriors out there who like something to latch onto and make discussions very one sided for no other reason than they want something to complain about..... shame really as because theres so many of them they tend to get listened to.
My 2.5's had a moderate amount of work, a nice conservative map to 440/440 and its been going for years and taking all the track time I can throw at it ..... so glad I didn't believe all the "chocolate" BS and just get the 2.0 rebuilt.
My 2.5's had a moderate amount of work, a nice conservative map to 440/440 and its been going for years and taking all the track time I can throw at it ..... so glad I didn't believe all the "chocolate" BS and just get the 2.0 rebuilt.
#12
Scooby Regular
2.5 out of the factory is pretty crap reliability wise, wrx and sti, known for doing ring lands and head gaskets.
However built right they are awesome and better road tuned engine than a 2.0, you just can't beat the torque they produce
However built right they are awesome and better road tuned engine than a 2.0, you just can't beat the torque they produce
#13
Scooby Regular
iTrader: (1)
You see this is exactly what we're talking about. Its not crap, thats just inaccurate, yes its not as strong as the EJ205, people need to understand the EJ205 was over engineered, we were spoilt. Yes some EJ257 standard units have blown HG's n ringlands, on the other hand there's lots of 2.5STi's which are still running very well and into 70/80K mileages with zero issues. I have a few mates who have 06 hawk and 08-10STi's who drive the absolute **** out of them on a daily basis and have had no problems. The key thing with all of them is they are modified by people who know what they are doing and MAPPED properly within their limits, so anywhere from 330-400bhp. Usually its ones thats have been modifed past its limits that die, again there are exceptions like the guy above. Also if you actually spend some time delving a bit deeper into the failure stats, from reputable sources, rather than relying on info from disgruntled owners on an internet forum you will see a different story.
Last edited by bioforger; 14 January 2015 at 12:14 PM.
#14
Scooby Regular
You see this is exactly what we're talking about. Its not crap, thats just inaccurate, yes its not as strong as the EJ205, people need to understand the EJ205 was over engineered, we were spoilt. Yes some EJ257 standard units have blown HG's n ringlands, on the other hand there's lots of 2.5STi's which are still running very well and into 70/80K mileages with zero issues. I have a few mates who have 06 hawk and 08-10STi's who drive the absolute **** out of them on a daily basis and have had no problems. The key thing with all of them is they are modified by people who know what they are doing and MAPPED properly within their limits, so anywhere from 330-400bhp. Usually its ones thats have been modifed past its limits that die, again there are exceptions like the guy above. Also if you actually spend some time delving a bit deeper into the failure stats, from reputable sources, rather than relying on info from disgruntled owners on an internet forum you will see a different story.
I do agree the figures prob get over egged, but given how many got replaced under warrenty (guy on here had 3 replacements) and the number of people with them gone on the rather large thread then its pretty obvious is was a weak point.
I doubt the exact failure figures will be known, but to say its the owners fault and the engine was fine is tosh.
#15
Scooby Regular
iTrader: (1)
well mine let go, a standard wrx with ringland failure, full service history etc etc so it goes way beyond just bad mapping/maint etc
I do agree the figures prob get over egged, but given how many got replaced under warrenty (guy on here had 3 replacements) and the number of people with them gone on the rather large thread then its pretty obvious is was a weak point.
I doubt the exact failure figures will be known, but to say its the owners fault and the engine was fine is tosh.
I do agree the figures prob get over egged, but given how many got replaced under warrenty (guy on here had 3 replacements) and the number of people with them gone on the rather large thread then its pretty obvious is was a weak point.
I doubt the exact failure figures will be known, but to say its the owners fault and the engine was fine is tosh.
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#22
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I'm running a wrx hatch 2.5 it has been perfect I've had it for a year now and it's much nicer to drive than any of my classic 2.0lt sti. I can't fault 2.5 take as you find it must be luck of the draw.
#26
Scooby Regular
£8k will see you in a rough Hatch STI, that's a large bill waiting to happen. You want to buy a cherished car really.
You could always buy a WRX hatch but that's a bit of a dog imo.
You could always buy a WRX hatch but that's a bit of a dog imo.
#27
Scooby Regular
Yeah, theres a lot of forum warriors out there who like something to latch onto and make discussions very one sided for no other reason than they want something to complain about..... shame really as because theres so many of them they tend to get listened to.
My 2.5's had a moderate amount of work, a nice conservative map to 440/440 and its been going for years and taking all the track time I can throw at it ..... so glad I didn't believe all the "chocolate" BS and just get the 2.0 rebuilt.
My 2.5's had a moderate amount of work, a nice conservative map to 440/440 and its been going for years and taking all the track time I can throw at it ..... so glad I didn't believe all the "chocolate" BS and just get the 2.0 rebuilt.
666BHP LAST TIME IT WAS DYNO'D BEFORE THE DRAG RUN.
The tuner acknowledges there are faulty 2.5 bottom ends from factory but they claim nearly all 2.5 failures are from the heat generated by the up-pipe, down-pipe and turbo destroying the near by cylinder 3. They claim if you conquer heat management then the stock 2.5 short motor is very capable.
#28
Scooby Regular
iTrader: (2)
Quickest/Fastest Stock Shortblock Subaru In The World, 9 Second Pass - YouTube
666BHP LAST TIME IT WAS DYNO'D BEFORE THE DRAG RUN.
The tuner acknowledges there are faulty 2.5 bottom ends from factory but they claim nearly all 2.5 failures are from the heat generated by the up-pipe, down-pipe and turbo destroying the near by cylinder 3. They claim if you conquer heat management then the stock 2.5 short motor is very capable.
666BHP LAST TIME IT WAS DYNO'D BEFORE THE DRAG RUN.
The tuner acknowledges there are faulty 2.5 bottom ends from factory but they claim nearly all 2.5 failures are from the heat generated by the up-pipe, down-pipe and turbo destroying the near by cylinder 3. They claim if you conquer heat management then the stock 2.5 short motor is very capable.
How come then its always cylinder 2 & 4 that fail, very rare for 3 to fail, in fact I have not seen any issues with cyl 3, even on my 800bhp 2.35's.