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Old 02-26-2008, 01:10 AM   #1
bigpace85
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Default turbo on 2.5i

hi im new here and i would like to know if anybody knows of a turbo kit to get for our 2.5i impreza any advice would help thanks in advance
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Old 02-26-2008, 01:17 AM   #2
dan13
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Originally Posted by bigpace85 View Post
hi im new here and i would like to know if anybody knows of a turbo kit to get for our 2.5i impreza any advice would help thanks in advance
You could do one of two things.

Take the block apart. Get new heads, cams, pistons, rods, crank, a turbo kit, engine management, turbo-back exhaust, intake, catch-can and a few other things. Then get a pro-tune. All costing near as much as buying a wrx.

Or buy a wrx.

You choose.
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Old 02-26-2008, 03:29 AM   #3
Subyroo2.5
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Originally Posted by dan13 View Post
You could do one of two things.

Take the block apart. Get new heads, cams, pistons, rods, crank, a turbo kit, engine management, turbo-back exhaust, intake, catch-can and a few other things. Then get a pro-tune. All costing near as much as buying a wrx.

Or buy a wrx.

You choose.
Or run 6 psi and be happy.
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Old 02-26-2008, 09:30 AM   #4
zavier
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Originally Posted by Subyroo2.5 View Post
Or run 6 psi and be happy.
and prolly kill the motor in half the time.

you can run low PSI and be "happy" but let's face it...no one is ever happy, once you are bit by the mod bug you can never quit

Quote:
Originally Posted by dan13 View Post
You could do one of two things.

Take the block apart. Get new heads, cams, pistons, rods, crank, a turbo kit, engine management, turbo-back exhaust, intake, catch-can and a few other things. Then get a pro-tune. All costing near as much as buying a wrx.

Or buy a wrx.

You choose.
you don't need new heads to run a turbo, nor cams really (it helps though)...crank will be fine and you def don't really need a catch-can (does the sti or wrx come with one?)...really if you want to make your block strong enough to run more then 5-6psi then you just need to make sure your pistons can take the abuse. right now you are running 10:1cr and that's going to cause some problems...using lower cr pistons and maybe stronger rods (i am not 100% sure if those are even needed but you might as well replace them as you are taking the piston out) will be enough plus a tune.

again the cost of turboing this motor is almost equal to the cost of doing a WRX swap which is also almost the cost of actually buying the WRX. now if insurance comes into play here then sure your options of a swap or building the block up a bit are prolly more realistic but if you are worried about insurance you should also be worried about warranty, emissions, and still insurance since swapping the motor or putting parts in the car after the fact are not covered so anything that goes wrong (and it will because it's a law that things will go wrong) they wont cover you and subaru will not cover you...

those are things you need to think about.

o and search next time...this has been covered for...o i don't know...the last 6+ yrs
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Old 02-26-2008, 11:38 AM   #5
dan13
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and prolly kill the motor in half the time.

you can run low PSI and be "happy" but let's face it...no one is ever happy, once you are bit by the mod bug you can never quit



you don't need new heads to run a turbo, nor cams really (it helps though)...crank will be fine and you def don't really need a catch-can (does the sti or wrx come with one?)...really if you want to make your block strong enough to run more then 5-6psi then you just need to make sure your pistons can take the abuse. right now you are running 10:1cr and that's going to cause some problems...using lower cr pistons and maybe stronger rods (i am not 100% sure if those are even needed but you might as well replace them as you are taking the piston out) will be enough plus a tune.

again the cost of turboing this motor is almost equal to the cost of doing a WRX swap which is also almost the cost of actually buying the WRX. now if insurance comes into play here then sure your options of a swap or building the block up a bit are prolly more realistic but if you are worried about insurance you should also be worried about warranty, emissions, and still insurance since swapping the motor or putting parts in the car after the fact are not covered so anything that goes wrong (and it will because it's a law that things will go wrong) they wont cover you and subaru will not cover you...

those are things you need to think about.

o and search next time...this has been covered for...o i don't know...the last 6+ yrs
If your going to do it right you might as well beef it up. Because once your inside the motor why would you not change all of it? Like said 6psi woohoo!!!! its pointless and a waste of time because you will either up the boost cause your bored or it will be tuned wrong and you blow it.

I know if i was to turbo my motor i would change all of it and do it right.
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Old 02-26-2008, 12:40 PM   #6
Subyroo2.5
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and prolly kill the motor in half the time.
Prove it!


I can turbo my car for a lot less time and money than it would take to do an engine swap....

And I will be happy with 6PSI. (+100hp with supporting mods and tune)
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Old 02-26-2008, 01:08 PM   #7
zavier
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it's almost like a figure of speech haha. some motors in stock form can last 250k miles and some don't make it past 40k miles...so saying it'll die in half the time doesn't really make sense other then to show that something will end up breaking.

but if you don't get a tune and try and tun 6psi it's not going to be safe and most people prolly don't get a tune right away or at all (and if they do it's not a very good one). look at how many blown motors people have from trying to turbo the older RS's...
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Old 02-26-2008, 01:53 PM   #8
subiesurfer
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Originally Posted by Subyroo2.5 View Post
Prove it!


I can turbo my car for a lot less time and money than it would take to do an engine swap....

And I will be happy with 6PSI. (+100hp with supporting mods and tune)

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Old 02-26-2008, 02:06 PM   #9
boymk
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Quote:
Originally Posted by Subyroo2.5 View Post
Prove it!


I can turbo my car for a lot less time and money than it would take to do an engine swap....

And I will be happy with 6PSI. (+100hp with supporting mods and tune)
unbelievable
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Old 02-26-2008, 02:15 PM   #10
gtbensley
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Go for it. I really have no idea about turboing a NA car other then what I have read about on this sit. But hey, if you want to do it go for it, just do you research so you know what you are getting into.
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Old 02-26-2008, 03:58 PM   #11
LTracer
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Originally Posted by Subyroo2.5 View Post
Prove it!


I can turbo my car for a lot less time and money than it would take to do an engine swap....

And I will be happy with 6PSI. (+100hp with supporting mods and tune)
Isn't there a separate technical forum for N/A with aftermarket forced induction? Regardless, bottom line is turboing your RS is quite feasible and it IS possible to have reliable setup provided you put in the time / effort / money to properly research what is required. Proper engine management is (absolutely required for retarding timing, adjusting fueling, monitoring boost, etc) is ESSENTIAL and will make or break your setup (yes, your motor will blow up). Do some more searching, enough blown motor threads exist to warrant caution. As far as reliability, your motor was not designed for forced induction and thus added strain (outside of the design spec) will be placed all major internals (as well as driveline). Does that mean your boosted N/A will only last 10k? Probably not, but I doubt you'll see many boosted N/A engines with over 100k on them (and boosted the entire time). Most don't keep their cars that long anymore so it might be a worthwhile project depending and your goals for the car (and how deep your pockets are). My strategy, enjoy the linear pull of n/a, do what I can to improve performance, and focus on handling . To each his own...
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Old 02-26-2008, 07:16 PM   #12
EvoSpeed
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Word is.... eventually it melt your engine block. The key is how long will it take and do you have the money to buy a new one when it does.
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Old 02-26-2008, 10:49 PM   #13
bigpace85
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well thanks for the advice but i went and looked at a 2008 wrx hatchback i think i might wanna trade in but still deciding.
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Old 02-26-2008, 10:49 PM   #14
bigpace85
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well thanks for the advice but i went and looked at a 2008 wrx hatchback i think i might wanna trade in but still deciding.
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