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Old 03-09-2010, 11:41 PM   #1
spike93
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Default Help me build a fun 2 liter

So as of right now, i have a TBE, catless uppipe, and an xpt reflash. I am looking for something with a little more spunk but not huge huge numbers. I love my quick spool and would love to keep that factor. I will be running a custom tune, so e85 is not really an option.

I was thinking of a larger top mount, a spt short ram, and turbo inlet, with the grimmspeed ebcs, and possbily larger injectors and fuel pump, then hoping to run like 20 pounds out of my td04.

Option 2, send out my old td04 to be rebuilt and made into the td04-19t with all the supporting mods mentioned above.

Or just going with a vf series possibly port and polishing it on top of all these mods listed.

I am open to suggestions, but please dont mention 18/20g's, and this will be an on going project but i was looking for options.
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Old 03-09-2010, 11:58 PM   #2
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You won't see more than about 15-20whp more if you max out the TD04. You'll definitely need a fuel upgrade to do it. Also....if your running a custom tune, won't E85 be a really good option? With a bunch more mods like you mentioned you'll really be able to increase the mid range torque by a lot.

The 19T is a good upgrade, but depending on how you do it, it might just be better to get a small 16G.

The decision you have to make, is how much low end torque are you willing to give up?
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Old 03-10-2010, 12:01 AM   #3
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vf22 or td05 (small) 16g. You wont notice a huge difference in spool
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Old 03-10-2010, 12:24 AM   #4
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Quote:
Originally Posted by evan_impreza View Post
vf22 or td05 (small) 16g. You wont notice a huge difference in spool

.......show me a case where there is NOT a huge difference in spool with a VF22.
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Old 03-10-2010, 12:56 AM   #5
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Quote:
Originally Posted by xsnapshot View Post
You won't see more than about 15-20whp more if you max out the TD04. You'll definitely need a fuel upgrade to do it. Also....if your running a custom tune, won't E85 be a really good option? With a bunch more mods like you mentioned you'll really be able to increase the mid range torque by a lot.

The 19T is a good upgrade, but depending on how you do it, it might just be better to get a small 16G.

The decision you have to make, is how much low end torque are you willing to give up?
See i have been thinking of playing with the small 16g, and i would assume that would put me around 300 horses ish. I would go with the intake and turbo inlet to help with spool. I really love my low and mid range torque, but that 16 could be fun too, i'm assuming its more of a mid to high end turbo?!

And as far as e85, yes its a great idea. However, my drive to the gas station that sells it is probably not worth running it, and i dont know if i'd want to run e85 all the time. I wont be using an accessport, so i would not be able to just switch maps for that.
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Old 03-10-2010, 02:40 AM   #6
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I've heard good things about the 19t upgrade. Thinking about doing it myself when the time comes. There is a good thread on hear about that turbo. It works really good with the 2.0l because of the lack of low end torque compared to the 2.5l. I don't know much about the td-05 that blouchturbo also has, but that maybe an option too...

I think any bigger and you will be looking at major boost lag. On that thread about the 19t some people were saying they hated their 16g and loved the 19t.

Definetly get a bigger tmic. Used STi ones on here are around $300. Another thing I did that I love is the Perrin lightweight crank pulley. It smoothed out the revs and made it rev a bit faster.

Good luck!
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Old 03-10-2010, 09:19 AM   #7
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Quote:
Originally Posted by spike93 View Post
See i have been thinking of playing with the small 16g, and i would assume that would put me around 300 horses ish. I would go with the intake and turbo inlet to help with spool. I really love my low and mid range torque, but that 16 could be fun too, i'm assuming its more of a mid to high end turbo?!

And as far as e85, yes its a great idea. However, my drive to the gas station that sells it is probably not worth running it, and i dont know if i'd want to run e85 all the time. I wont be using an accessport, so i would not be able to just switch maps for that.
The small 16G is a great turbo for the 2.0L. You likely won't get 300whp out of it, unless you do a ton of other modifications and run on E85/race gas. A realistic figure would be about 270whp. Likely reaching peak torque 3800 RPM (depending on your boost target), and peak HP at ~6000 RPM. (holding fairly well to redline)

it is POSSIBLE to pull 250whp from the TD04 with tons of mods and E85. However it will be much less efficient. Peak torque on such a setup will be in the neighborhood of 3500 RPM, and peak HP around 5500 RPM. (falling off quick towards redline).

You'll spend as much, if not more, to max out the stock turbo, then you would with just basic mods and a small 16G.
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Old 03-10-2010, 10:55 AM   #8
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You should grab a 6spd. That will make the 2.0L more lively. Stock WRX gears are long enough.... A simple 2.5RS tranny or the shorter 5th gear Outback NA tranny brings the car to life; swapping the rear diff to match the 4.111 tranny as well.

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Old 03-10-2010, 04:40 PM   #9
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http://forums.nasioc.com/forums/show....php?t=1287005 copy this mod path as close as you can. BE SURE to include the smallest diameter tires you can as this changes your final drive for the better.
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Old 03-10-2010, 05:02 PM   #10
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What are the ratios in an RS transmission? I've read the Legacy 1st and 2nd are better than the WRX so I was planning on swapping those in if my tranny eats it. But if there's a whole trans out there that is better, I'm down for that too.
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Old 03-10-2010, 05:40 PM   #11
FuJi K
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Quote:
Originally Posted by sharkmonkey View Post
What are the ratios in an RS transmission? I've read the Legacy 1st and 2nd are better than the WRX so I was planning on swapping those in if my tranny eats it. But if there's a whole trans out there that is better, I'm down for that too.
well... you have to have a goal what you want out of the car the MOST. What you want the car to do BEST so that way you can give up some to get the best.

http://forums.nasioc.com/forums/show....php?t=1689781


The 2.5RS gears and the other NA trannys are not going to be any stronger. However the ratios are what move the car. There are a handful of NA trannies. It's just that with more power and torque, they are not going to hold. I broke the NA trannies I had. The engine put out approx 270wtq/280whp held by by an ACT HD clutch kit (sprun 6puck). Broke a '00 RS tranny, '00 OBS 5spd, '93 AWD Legacy 5spd, then currently running my JDM DCCD 6spd. The '03 WRX runs the '97 Outback with a unsprun 6puck. I am wondering how long it's going to hold. The car will attend a few autoX's this year for kicks and giggles. If dragging I know it'll break sooner or later.

I would actually like to have a FXT tranny with the 4.444 and install STi RA gears on it to get the short ratios. However this 6spd is so awesome! I really like the DCCD system, which is much better than the weak VLSD center diff.
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Old 03-10-2010, 11:20 PM   #12
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Unabomber, thank you much. I found that thread a while back and could not remember where it was. That looks like a very fun setup! Didn't you end up going with a new setup though? Like a 16g or something?

And i have seen the 2 threads on the 19T thats where i got the idea from actually. This route seems more logical than the 16g for my goals.
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Old 03-11-2010, 03:39 AM   #13
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I can attest to the pnp Td04 at 20 psi being an absolute giggle inducing DD hilarious fun especially in a stock look wagon.


Throw in a GrimmSpeed EBCS too.
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Old 03-11-2010, 02:51 PM   #14
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A BCS + tune + 16g/vf39/34/22 any of those "smaller" turbo upgrades will get you where I think you are wanting to go. As stated before fuel will be absolutely necessary in this case.

Will
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Old 03-11-2010, 04:51 PM   #15
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Quote:
Originally Posted by GrimmSpeed View Post
A BCS + tune + 16g/vf39/34/22 any of those "smaller" turbo upgrades will get you where I think you are wanting to go. As stated before fuel will be absolutely necessary in this case.

Will
I'm planning on running your (Grimmspeed) ebcs, a 255 fuel pump. A sti top mount and spt intake with turbo inlet. So yea i am still deciding on the turbo i want to do. I assume thats going to dictate the injectors i should use?
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Old 03-12-2010, 10:44 AM   #16
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Quote:
Originally Posted by spike93 View Post
I'm planning on running your (Grimmspeed) ebcs, a 255 fuel pump. A sti top mount and spt intake with turbo inlet. So yea i am still deciding on the turbo i want to do. I assume thats going to dictate the injectors i should use?
Well yes for sure, obviously if you went with a 35r you would need much larger injectors that the standard 565 sti's. When you decide on a turbo you will then have enough info to decide on injectors.

Will
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