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Old 02-23-2014, 01:39 PM   #1
Jimbo000222
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Member#: 382596
Join Date: Feb 2014
Location: Fort Drum, NY
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2004 Impreza WRX
Subie Blue W/Red Mudflaps

Default Upgrades on a 2.0l?

I'm looking into a headgasket job on my 2004 WRX. I was thinking since I will have it all torn apart, would I go ahead and upgrade to forged internals. The car has 145k on it so I dont plan on pushing it a crazy amount. It is more a daily driver than anything else. For the price of rods, pistons, rings, bearings, and anything else that comes up, would I be alright staying stock in the block? If so, would I gain from bigger injectors or would that stress whats underneath too much? I feel like I am at a crossroad here. I am leaning toward the cheaper side with just the headgasket, timing kit, lightweight flywheel and crank pulley, clutch, blowoff valve, and a Invidia setup. That will all happen with or without the internals. The only thing I have currently is a COBB intake and an aluminum radiator. Long story short, for what I am going to do, will I need to upgrade my insides? Im really racking my brain on this one and some experienced help would be awesome.
-Jim
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Old 02-23-2014, 02:13 PM   #2
2.5ReallySexy
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Its really up to you and your plans for the car in the future. If you don't plan on going to crazy with building it then just do the basics. But now is the best time to go extra mile if you do plan on big mods.
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Old 02-23-2014, 03:04 PM   #3
Colton Brady
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2003 Impreza WRX
Silver

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+1 for 2.5ReallySexy

If you are planning on doing something big with it and want any sort of reliability, then build it. Now would be a perfect time since you will already have it apart, too. But if you aren't planning to go past "stage 2" then you probably don't need to worry about it. It's all in what you plan on doing in the future.
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Old 02-23-2014, 03:40 PM   #4
Jimbo000222
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Thats where the question arises for me. Is it worth putting that kind of money into a WRX 2.0 or should I hold off awhile and throw in an STI setup?
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Old 02-23-2014, 03:56 PM   #5
Brother EddieJ.
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6speed/ 330whp/ 300wtq

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You have a lot of reading to do. Start in the noob section and read all the stickies twice. That will answer A LOT of your questions.

Fwiw just throwing in an sti set up is super involved. I know this because I've been researching and collection parts for well over a year.
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Old 02-23-2014, 04:15 PM   #6
ProfessWRX
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Yamaha R6

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If you don't plan on "pushing it a crazy amount" then forged internals are a complete waste of time.
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Old 02-24-2014, 07:31 AM   #7
quazimoto
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Leave the stock internals and just give the piston tops a good cleaning. I would do a mild port/polish job on the heads.
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Old 02-24-2014, 08:40 AM   #8
HinshawWRX
Medium Frank
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GT3 (Currently on Fire)

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Nothing you list really adds power aside from whatever you consider an "invidia setup." Downpipe + tune will be fine for you. Blow off valve, lightweight flywheel don't do crap for you.

Start reading this. http://forums.nasioc.com/forums/showthread.php?t=533787
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Old 02-25-2014, 01:34 AM   #9
mod maniac
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Fullers Garage

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The 04 wrx has better oiling so you can twist it up better than the 02/03. I would Turn up the readline to7.5k run some 850cc injectors and a blouch 1.5 xtr. intercooler, pump and a tune of course. That would make it fun. There are a lot of options though.
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Old 02-26-2014, 03:53 PM   #10
GscoobM
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Throw a few STI parts from a wrecked STI on there. I have injectors, turbo, and intercooler. It's a 2.1L with full invidia exhuast. Makes for a fun little car
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