ej255 build
19 July 2018, 10:31 PM
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ej255 build
hi, just weighing up cost involved in modifying my forester sti to around 400/450.
i understand its an ej255 engine, its been mapped with the standard turbo 330/350.
what exactly would need doing to get to this sort of power and torque?
mileage on car is approx 60k running sweet atm.
car is a 2005 pre facelift 2.5 sti.
is it a full engine build or just change pistons,turbo,clutch and head gasket?
any info appreciated as always.
i understand its an ej255 engine, its been mapped with the standard turbo 330/350.
what exactly would need doing to get to this sort of power and torque?
mileage on car is approx 60k running sweet atm.
car is a 2005 pre facelift 2.5 sti.
is it a full engine build or just change pistons,turbo,clutch and head gasket?
any info appreciated as always.
20 July 2018, 03:12 AM
#3
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I’m going to be boring and say don’t , 330 is a sweet spot in those cars , there is very little lag so it leaves most things for dead , sensible fuel economy if you want to be and quick if you want it to be , my friend upped the power on his , it did not like it and it took out the rest of the engine , in his own words he regretted playing with it , i have 2 fsti and i would not look to get any more than the 330 mark , but your car your choice , my fiend had a spec d that was tuned and in theory more powerful but there was noting in it and the fsti was always quicker off the mark plus much easier to drive , the 5th gear video always made me smile the fsti v the impreza sti
20 July 2018, 10:22 AM
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To do it well and have reliability and not have to rebuild again after 20k miles they yes ur talking 7-10k. Could get the power cheaper but could blow the engine at anytime. Get suspension sorted and then a remap for the fuel you use and to tweak the power bands e c then enjoy. I always have a dream of 500bhp subaru, fasted car before I got my sti was a 150bhp coupe so now with 300+ bhp I'm pretty satisfied I don't actually need more for everyday driving
20 July 2018, 11:19 AM
#6
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One of my fsti has a sports cat one not , the non sports cat seems easier to drive even if it’s less powerful , both similar map and boost levels , on the mpg side ive had between 32 and 35 mpg , on the performance side my 2 litre jdm wagon with around 340bhp v the mrs in her less powerful 300/310 bhp fsti , off the lights with her putting limited effort in and me giving it the beans she destroyed me in the jdm wagon , on a different occasion ... so you think well more boost comes in later on the wagon due to lag of a 2 litre plus bigger turbo , it does but i’m still rather confident the fsti was quicker as she was just sitting behind me no big gaps opening up , im talking sensible speeds in a 70 mph before i get told off
20 July 2018, 11:57 AM
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To do it well and have reliability and not have to rebuild again after 20k miles they yes ur talking 7-10k. Could get the power cheaper but could blow the engine at anytime. Get suspension sorted and then a remap for the fuel you use and to tweak the power bands e c then enjoy. I always have a dream of 500bhp subaru, fasted car before I got my sti was a 150bhp coupe so now with 300+ bhp I'm pretty satisfied I don't actually need more for everyday driving
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20 July 2018, 12:01 PM
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One of my fsti has a sports cat one not , the non sports cat seems easier to drive even if it’s less powerful , both similar map and boost levels , on the mpg side ive had between 32 and 35 mpg , on the performance side my 2 litre jdm wagon with around 340bhp v the mrs in her less powerful 300/310 bhp fsti , off the lights with her putting limited effort in and me giving it the beans she destroyed me in the jdm wagon , on a different occasion ... so you think well more boost comes in later on the wagon due to lag of a 2 litre plus bigger turbo , it does but i’m still rather confident the fsti was quicker as she was just sitting behind me no big gaps opening up , im talking sensible speeds in a 70 mph before i get told off
would imagine it would make for a very rapid forester, but at 7-10k. no thanks lol
20 July 2018, 12:23 PM
#9
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i can tell you 400/420 in a hawk saloon makes a great daily drive
20 July 2018, 12:31 PM
#10
I love the FSTI package, mine has surprised a lot of cars that should have been far faster than mine.
One of my friends has a modified hawkeye with a billet VF43, FMIC and loads of other mods mapped to 395bhp and he was unable to pull away from me at any speed. In fact I actually gained on him (just).
Just the other day some kid tried to race me in his modified convertible M3 (Very loud exhaust) and he couldn't get close to my FSTI. I was pulling away from him massively in all gears. It made it more funny because he was posing with 2 blonde girls in the car at the time.
Mine is still on the original VF41 and mapped 3 time snow by Andrew Carr with mods and gains every time. I love it.
Would love to have a go in a 450bhp FSTI to see what that's like. Realistically if mine ever blows up it'll get forged with CDB inserts, uprated rods, pistons etc probably by Paul Finch. But to go from 350bhp to 450bhp costs a lot more on top of the engine, I'd have to swap my 2.5" exhaust for a 3" system, downpipe, FMIC, new turbo, fuel delivery etc. Just not worth it for a car that drives so well as an every day road car at 350bhp.
One of my friends has a modified hawkeye with a billet VF43, FMIC and loads of other mods mapped to 395bhp and he was unable to pull away from me at any speed. In fact I actually gained on him (just).
Just the other day some kid tried to race me in his modified convertible M3 (Very loud exhaust) and he couldn't get close to my FSTI. I was pulling away from him massively in all gears. It made it more funny because he was posing with 2 blonde girls in the car at the time.
Mine is still on the original VF41 and mapped 3 time snow by Andrew Carr with mods and gains every time. I love it.
Would love to have a go in a 450bhp FSTI to see what that's like. Realistically if mine ever blows up it'll get forged with CDB inserts, uprated rods, pistons etc probably by Paul Finch. But to go from 350bhp to 450bhp costs a lot more on top of the engine, I'd have to swap my 2.5" exhaust for a 3" system, downpipe, FMIC, new turbo, fuel delivery etc. Just not worth it for a car that drives so well as an every day road car at 350bhp.
20 July 2018, 01:08 PM
#11
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I love the FSTI package, mine has surprised a lot of cars that should have been far faster than mine.
One of my friends has a modified hawkeye with a billet VF43, FMIC and loads of other mods mapped to 395bhp and he was unable to pull away from me at any speed. In fact I actually gained on him (just).
Just the other day some kid tried to race me in his modified convertible M3 (Very loud exhaust) and he couldn't get close to my FSTI. I was pulling away from him massively in all gears. It made it more funny because he was posing with 2 blonde girls in the car at the time.
Mine is still on the original VF41 and mapped 3 time snow by Andrew Carr with mods and gains every time. I love it.
Would love to have a go in a 450bhp FSTI to see what that's like. Realistically if mine ever blows up it'll get forged with CDB inserts, uprated rods, pistons etc probably by Paul Finch. But to go from 350bhp to 450bhp costs a lot more on top of the engine, I'd have to swap my 2.5" exhaust for a 3" system, downpipe, FMIC, new turbo, fuel delivery etc. Just not worth it for a car that drives so well as an every day road car at 350bhp.
One of my friends has a modified hawkeye with a billet VF43, FMIC and loads of other mods mapped to 395bhp and he was unable to pull away from me at any speed. In fact I actually gained on him (just).
Just the other day some kid tried to race me in his modified convertible M3 (Very loud exhaust) and he couldn't get close to my FSTI. I was pulling away from him massively in all gears. It made it more funny because he was posing with 2 blonde girls in the car at the time.
Mine is still on the original VF41 and mapped 3 time snow by Andrew Carr with mods and gains every time. I love it.
Would love to have a go in a 450bhp FSTI to see what that's like. Realistically if mine ever blows up it'll get forged with CDB inserts, uprated rods, pistons etc probably by Paul Finch. But to go from 350bhp to 450bhp costs a lot more on top of the engine, I'd have to swap my 2.5" exhaust for a 3" system, downpipe, FMIC, new turbo, fuel delivery etc. Just not worth it for a car that drives so well as an every day road car at 350bhp.
20 July 2018, 06:19 PM
#12
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I love the FSTI package, mine has surprised a lot of cars that should have been far faster than mine.
One of my friends has a modified hawkeye with a billet VF43, FMIC and loads of other mods mapped to 395bhp and he was unable to pull away from me at any speed. In fact I actually gained on him (just).
Just the other day some kid tried to race me in his modified convertible M3 (Very loud exhaust) and he couldn't get close to my FSTI. I was pulling away from him massively in all gears. It made it more funny because he was posing with 2 blonde girls in the car at the time.
Mine is still on the original VF41 and mapped 3 time snow by Andrew Carr with mods and gains every time. I love it.
Would love to have a go in a 450bhp FSTI to see what that's like. Realistically if mine ever blows up it'll get forged with CDB inserts, uprated rods, pistons etc probably by Paul Finch. But to go from 350bhp to 450bhp costs a lot more on top of the engine, I'd have to swap my 2.5" exhaust for a 3" system, downpipe, FMIC, new turbo, fuel delivery etc. Just not worth it for a car that drives so well as an every day road car at 350bhp.
One of my friends has a modified hawkeye with a billet VF43, FMIC and loads of other mods mapped to 395bhp and he was unable to pull away from me at any speed. In fact I actually gained on him (just).
Just the other day some kid tried to race me in his modified convertible M3 (Very loud exhaust) and he couldn't get close to my FSTI. I was pulling away from him massively in all gears. It made it more funny because he was posing with 2 blonde girls in the car at the time.
Mine is still on the original VF41 and mapped 3 time snow by Andrew Carr with mods and gains every time. I love it.
Would love to have a go in a 450bhp FSTI to see what that's like. Realistically if mine ever blows up it'll get forged with CDB inserts, uprated rods, pistons etc probably by Paul Finch. But to go from 350bhp to 450bhp costs a lot more on top of the engine, I'd have to swap my 2.5" exhaust for a 3" system, downpipe, FMIC, new turbo, fuel delivery etc. Just not worth it for a car that drives so well as an every day road car at 350bhp.
martyn mapped mine as you know, turbo max out at 330/350 1.4 bar or thereabouts.
27 July 2018, 10:05 AM
#13
Sadly still not been on a rolling road. Was supposed to be doing a local rolling road day last weekend arranged by a local group who cancelled it without notice to do a Prodrive tour instead. Only found out a couple of days before it was cancelled. Very annoying.
06 August 2018, 10:16 PM
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Sadly still not been on a rolling road. Was supposed to be doing a local rolling road day last weekend arranged by a local group who cancelled it without notice to do a Prodrive tour instead. Only found out a couple of days before it was cancelled. Very annoying.
07 August 2018, 10:52 AM
#15
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-still ticking time bomb
07 August 2018, 11:17 AM
#16
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You mean from the dealer? which are simple refresh using same parts so liable to fail again.
I Don't know of many 2.5 failures post forging unless they had genuine part failures, had crap treatment or just been crap builds.
Given how many I've had and how long I've been around 2.5's that have been rebuilt I suspect you may have a rather limited view on them.
I Don't know of many 2.5 failures post forging unless they had genuine part failures, had crap treatment or just been crap builds.
Given how many I've had and how long I've been around 2.5's that have been rebuilt I suspect you may have a rather limited view on them.
07 August 2018, 12:09 PM
#17
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from members here and other 2.5l owners,
mainly crap rebuild,still lifting heads, leaving oem oil pick up pipe,partly rebuild with no changed main bearings for example,
crap parts , ****e remap and building skills
most of rebuilds are with no closed deck inserts -with it added rebuild price rise, pusching costs to ej22 build
mainly crap rebuild,still lifting heads, leaving oem oil pick up pipe,partly rebuild with no changed main bearings for example,
crap parts , ****e remap and building skills
most of rebuilds are with no closed deck inserts -with it added rebuild price rise, pusching costs to ej22 build
why single out the 2.5?
Sounds like you've had a bad experience?
07 August 2018, 12:39 PM
#18
I'd be inclined to say it's a bit of a and b, quality of the rebuild and the inheritantly weaker 2.5 block (cylinder wall is thinner) that is more likely to expose the poorer rebuilds.
For head gasket failure, it took me 3 goes to get a stable build on my hawk 2.5 running at roughly 400hp with a td05 20g. On the last one I machined both the heads and blocks (instead of just the heads as was done previously), fitted the uprated JDM water pump and a mishimoto rad to improve cooling. I also run almost stock fuelling and timing for safety. (This is additional to forged rods and pistons, arp studs that were already fitted previously)
I've found it best each time to completely strip the engine, even for h/gasket failure and that's where the cost comes in, unless you can/are able to do it yourself.
For head gasket failure, it took me 3 goes to get a stable build on my hawk 2.5 running at roughly 400hp with a td05 20g. On the last one I machined both the heads and blocks (instead of just the heads as was done previously), fitted the uprated JDM water pump and a mishimoto rad to improve cooling. I also run almost stock fuelling and timing for safety. (This is additional to forged rods and pistons, arp studs that were already fitted previously)
I've found it best each time to completely strip the engine, even for h/gasket failure and that's where the cost comes in, unless you can/are able to do it yourself.
07 August 2018, 01:12 PM
#19
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I'd be inclined to say it's a bit of a and b, quality of the rebuild and the inheritantly weaker 2.5 block (cylinder wall is thinner) that is more likely to expose the poorer rebuilds.
For head gasket failure, it took me 3 goes to get a stable build on my hawk 2.5 running at roughly 400hp with a td05 20g. On the last one I machined both the heads and blocks (instead of just the heads as was done previously), fitted the uprated JDM water pump and a mishimoto rad to improve cooling. I also run almost stock fuelling and timing for safety. (This is additional to forged rods and pistons, arp studs that were already fitted previously)
I've found it best each time to completely strip the engine, even for h/gasket failure and that's where the cost comes in, unless you can/are able to do it yourself.
For head gasket failure, it took me 3 goes to get a stable build on my hawk 2.5 running at roughly 400hp with a td05 20g. On the last one I machined both the heads and blocks (instead of just the heads as was done previously), fitted the uprated JDM water pump and a mishimoto rad to improve cooling. I also run almost stock fuelling and timing for safety. (This is additional to forged rods and pistons, arp studs that were already fitted previously)
I've found it best each time to completely strip the engine, even for h/gasket failure and that's where the cost comes in, unless you can/are able to do it yourself.
07 August 2018, 01:20 PM
#21
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