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2.5 swap for my 04 wrx?

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Old 05-19-2010, 01:36 PM
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Originally Posted by 04caliwrx
I have been running a 30r and a wrx trany for about a year with no problems, drive snark and your 5 speed can take some good power. I'm just now getting my 6 speed installed.
I've seen people pop a 5sp with stock power It really just depends I think...
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Old 05-20-2010, 02:00 PM
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Originally Posted by 03'EyeBug
I've seen people pop a 5sp with stock power It really just depends I think...
I am using a stock 5speed from my rs and it is lasting with the ej255 just be nice and smooth when you shift
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Old 05-24-2010, 07:56 PM
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It has now been confirmed that it is in fact a rod knock. DaaammmmmmmG! I will be getting the 2.5. The story begins......
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Old 05-25-2010, 06:50 PM
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Welp, by next week this nightmare will be over, and i will be 6k in the crapper...
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Old 05-27-2010, 03:39 PM
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The 2.5l is definitely the way to go, but good luck with those stock pistons .

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Old 05-27-2010, 09:29 PM
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Originally Posted by EQ Tuning
The 2.5l is definitely the way to go, but good luck with those stock pistons .

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-- Ed
Haha I'm not going to race the crap out of it... hopefully haha, I think it will hold up though, is there something i should know?
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Old 05-27-2010, 09:54 PM
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Originally Posted by Urglegrew
Haha I'm not going to race the crap out of it... hopefully haha, I think it will hold up though, is there something i should know?
ahhhhhhhhh hahaha I am an idiot, thank you, haha I get it...
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Old 05-28-2010, 12:19 AM
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Originally Posted by Urglegrew
Haha I'm not going to race the crap out of it... hopefully haha, I think it will hold up though, is there something i should know?
definitely should go aftermarket pistons, bearings, etc... what im saying is you should replace anything and everything that has been known to go bad in a stock 2.5, save you time and money, oh and a headache in the future... just ask Ed from EQ Tuning what kind of headache i went through...
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Old 05-28-2010, 10:43 AM
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Originally Posted by Urglegrew
Haha I'm not going to race the crap out of it... hopefully haha, I think it will hold up though, is there something i should know?
The stock pistons these days are like playing russian roulette. If you're lucky, your motor might last a while, if not, you could crack a ringland in the first 5k miles. Ever since the late half of 06, the EJ25X pistons have been horribly inconsistent.

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Old 05-28-2010, 02:17 PM
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Originally Posted by EQ Tuning
The stock pistons these days are like playing russian roulette. If you're lucky, your motor might last a while, if not, you could crack a ringland in the first 5k miles. Ever since the late half of 06, the EJ25X pistons have been horribly inconsistent.

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...DAM! i swear with my luck, they will break in 5k. What type of pistons do you recomend?
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Old 05-28-2010, 04:24 PM
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Originally Posted by Urglegrew
...DAM! i swear with my luck, they will break in 5k. What type of pistons do you recomend?
What mods do you have and/or planning to install with this motor?

We use Wiseco forged pistons on both 2.0 & 2.5 liter engines.
Fun fact: It usually costs the same or slightly less using forged pistons vs OE pistons.

Fair warning: Non OE main & rod bearings are becoming VERY difficult to source.
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Old 05-28-2010, 07:12 PM
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Originally Posted by Urglegrew
...DAM! i swear with my luck, they will break in 5k. What type of pistons do you recomend?
We use primarily CP pistons as we have found them to be quieter than most other forged pistons on the market. They also hold up very well over time.

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Old 05-28-2010, 07:17 PM
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Originally Posted by Paul@dbtuned
What mods do you have and/or planning to install with this motor?

We use Wiseco forged pistons on both 2.0 & 2.5 liter engines.
Fun fact: It usually costs the same or slightly less using forged pistons vs OE pistons.

Fair warning: Non OE main & rod bearings are becoming VERY difficult to source.
It costs about the same using forged pistons if you use drop-ins without boring and honing the cylinders to the proper bore for the forged piston. Going the more precise route and setting the bores correctly usually gets more expensive, but is well worth it especially if the car will ever be tracked.

The worldwide ACL bearing backorder is definitely putting a damper on things right now! We decided to switch to Cosworth bearings for our builds for the time being.

Thanks
-- Ed
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Old 05-28-2010, 07:45 PM
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We don't use drop in pistons; all pistons/cylinders are precision bored/honed.
And it's still usually cheaper to use forged pistons.

Originally Posted by EQ Tuning
It costs about the same using forged pistons if you use drop-ins without boring and honing the cylinders to the proper bore for the forged piston. Going the more precise route and setting the bores correctly usually gets more expensive, but is well worth it especially if the car will ever be tracked.

The worldwide ACL bearing backorder is definitely putting a damper on things right now! We decided to switch to Cosworth bearings for our builds for the time being.

Thanks
-- Ed
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Old 05-29-2010, 10:45 AM
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Originally Posted by Paul@dbtuned
We don't use drop in pistons; all pistons/cylinders are precision bored/honed.
And it's still usually cheaper to use forged pistons.
usually cheaper if they have a core to start with .

-- Ed
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