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Old 05-15-2011, 08:12 PM   #1
Anthonydinatale
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Default Ej205 build questions

Okay so I have a 2004 wrx with almost 160,xxx miles still pulls and runs great. But I am looking to rebuild another block soon maybe do an entire motor can someone recommend internals for my build. When I am all said and done I want to be around 400whp.
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Old 05-16-2011, 12:35 AM   #2
hybrid gti 2
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Start thinking big turbo or large oem twin scroll for those kind of numbers, As well a strong 5 speed or a 6mt swap.
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Old 05-16-2011, 12:39 AM   #3
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Quote:
Originally Posted by hybrid gti 2
Start thinking big turbo or large oem twin scroll for those kind of numbers, As well a strong 5 speed or a 6mt swap.
That wouldn't be for awhile.

Looking for internal recommendations
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Old 05-16-2011, 12:59 AM   #4
Anthonydinatale
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I want to build the motor. Keep stock turbo for now. Then put in the 6 speed then I'll throw a big turbo on there
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Old 05-16-2011, 01:06 AM   #5
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I would build a hybrid. The cost difference would be negligible and you would gain some displacement. For 400whp your run of the mill mahle/cp/je pistons would work along with whatever flavor of affordable H beam suits your fancy. You aren't really asking much so you do not need to be extremely choosy with your components. Any more application info? We could do a better job with suggesting specifics if you more thoroughly fleshed out your plans.
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Old 05-16-2011, 01:11 AM   #6
Anthonydinatale
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To be honest this is my first subie so I'm kind of confused on building this motor because I hear so many different things that go wrong.

I'm looking to be different I just want a daily driver weekend warrior. And an occasional road corse Rex. I will probably be doing head work because I can get them done extremely cheap.


I don't think I want to do a hybrid because that's what everyone is doing. What and where do you recommend ordering internals gaskets oil pumps belts. Then whole deal from
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Old 05-16-2011, 10:02 AM   #7
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Build a 2.1L stroker with a higher RPM orientation. They're punchy, hold there own quite well against a 2.5L, won't require a new block and can spin.

I order my gaskets, pumps, etc from my dealer but then again I have a great dealership to work with. That and I've ordered enough parts that even the brother's who run the place know my name and give me 'special' pricing when I call

There is however a simplicity to just grabbing a 2.5L, fitting forged pistons and deshrouding the combustion chamber. Your fuel bill will just be higher.
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Old 05-16-2011, 12:46 PM   #8
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I loved the 2.1. I built for my WRX. Added nicer drivability in comparison to the 2.0. And as Homeade said you do not need a new block.
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Old 05-16-2011, 12:48 PM   #9
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So what's a price range I could build a 2.1?
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Old 05-16-2011, 12:51 PM   #10
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To do it right anywhere from 2-3k.
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Old 05-16-2011, 12:52 PM   #11
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Where do you recommend buying parts from for a 2.1 build. I'm not sure if I need a 2.1. Its mostly just a daily driver that will be at 1 or 2 road courses a year
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Old 05-16-2011, 03:23 PM   #12
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A 2.1L is nothing but the 79mm crank from an EJ25 stuck into an EJ20 with different pistons.
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Old 05-16-2011, 03:24 PM   #13
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So pretty much an sti crank?
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Old 05-16-2011, 03:42 PM   #14
Homemade WRX
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Yeah, keeping it super budgeted I would; buy an STi crank, STi rods and Mahle pistons. I'd run the 2618 ('powerpak' I believe) versions and just let the engine warm when cold before flogging.
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Old 05-16-2011, 03:45 PM   #15
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Thanks bro. Now just need to find a deal on sti rods. Should I run oem sti rods?
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Old 05-16-2011, 04:08 PM   #16
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OEM rods are good for OEM rods. They don't do well with high RPM because of rod cap distortion (not sure of the 08+ rods though) and they're heavy. For a basic DD application, they're fine.
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Old 05-17-2011, 12:27 AM   #17
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Now it's just deciding what to do!
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Old 05-17-2011, 08:02 PM   #18
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Don't get me wrong, I'm pro-stroker, but for your needs an OEM ej205 crate short block will work just fine.

Have your heads decked, checked for cracks, new valve guides installed, bolt it back together and stop there. That alone with new belts, pumps, fluids, gaskets, plugs, and shop labor you are looking at close to $5K (that no performance parts).

For anything over 350whp you'll need well over $10K in spare cash and a new gear box
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Old 05-18-2011, 02:24 AM   #19
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Sorry man but it WILL NOT cost 5000 to build a motor. It will cost whatever parts are and that's not 5k
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Old 05-18-2011, 07:35 AM   #20
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Quote:
Originally Posted by Anthonydinatale View Post
Sorry man but it WILL NOT cost 5000 to build a motor. It will cost whatever parts are and that's not 5k
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Old 05-19-2011, 12:37 AM   #21
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If your doing the work your self then maybe not 5k. But more releastically, your looking about 2,200-2,600 in parts. 300 for a basic hone and bore, no resurface on heads, n then maybe another 300 for miscellaneous tools, and money spent while your wasting your time doing all of this. So ok we will say 3500... Still alot with no performance, or tune or anything else u may have messed up in the mean time... Im where your at my man, just saving up the cash to do it right!!!!

Would he need to port the heads a tad to compensate for the larger bore? I know with hybrids you should port the heads to match the sti flow? Thanks
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Old 05-19-2011, 12:39 AM   #22
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It's going to cost me 800 for manly rods and pistons I believe the pistons are manly. Bearings are 80. I'm getting everything for cost
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Old 05-19-2011, 12:57 AM   #23
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I know everyone wants to build up their motors. But I was in the same position as the OP. And in the end I went with a v8 EJ207 for $4500. Incredibly happy with my decision. Just thought I'd throw that out there.

Only difference was that I was at 165,000 miles when I started thinking about it. The engine went 200 miles after I announced my plans to start saving for an engine swap. I think it got jealous.
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Old 05-19-2011, 12:59 AM   #24
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After thinking about it 300-350whp would be fine with me so I'm going to do a budget build make the car like new again and still be able to track the car with extremely good suspension mods
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Old 05-19-2011, 01:37 AM   #25
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Just need to add to this some... I just bought new cp 9:1 pistons, new replacement 6 puck act clutch disk, acl rod bearings, oem master gasket and rebuild kit for 850 shipped from bostom motorsports here on NASIOC
250 for a hone and 50 for a deck from costa mesa r and d.
30 bucks for a new oil pick up tube because I don't want to reuse old one
100 for turbo rebuild kit. Because I needed it
100 for injector cleaning. Because I needed it
35 for piston and bearing coatings from tech line coatings. Diy stuff
100 for acl main bearings
30 for resurface flywheel
60 for fluids and oils.

And this is all me doing most of the work. All the small stuff adds up very quick
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