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Old 05-18-2006, 01:47 PM   #1
mokujin22
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30 mpg 2000 Neon...Hi!

Default 2.5 SB, 2.0 Heads, 20G, What Supporting Fuel Delivery Parts?

Having just secured a daily driver (2001 Neon...Hi!), I'm about to start my swap. I'm going with a Stage 1 2.5L SB from Gruppe-S, stock 2.0L heads with Helix 264 cams and valvetrain. To start, I will be using my VF30 until I upgrade to (most likely) a 20G. Right now, I have sti pink injectors and a Wallbro fuel pump (and MRT TMIC).

I assume that I will need bigger injectors when I step up the turbo, but will the pinks be ok in the mean time (VF30 on 2.5 hybrid)?

Also, when I do upgrade, should I install the TGV delete to accomodate new injectors? What setup are most using on a hybrid setup like this (injector config, fuel rails, intake manifold, etc)?

Thanks in advance,
Tony
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Old 05-18-2006, 01:55 PM   #2
herewegoagain
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Pinks will be maxed with the VF30 on a 2.5L. You do not need the TGV deletes, but they are always a nice-to-have. You will be just fine with the stock fuel rails and intake manifold. With a 20G and those cams, look for at least 720cc injectors.

Last edited by herewegoagain; 05-18-2006 at 02:00 PM.
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Old 05-18-2006, 02:29 PM   #3
mokujin22
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scratch that... the more i think about it; i'm going to install the turbo along with the block and skip that "intermediate step."

so you recommend something in the 720 cc range? i was considering the Perrin fuel rails over the stockers to avoid the whole uneven distribution issue. is this a real concern?

Tony
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Old 05-18-2006, 02:34 PM   #4
herewegoagain
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No concern. Kingpin made 500hp on the stock rails. But if you have the coin to spend...
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Old 05-18-2006, 04:03 PM   #5
keaniegenie
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just injectors and fuel pump my friend. Pinks would do the job on a conservative tune. There's a guy running around with a new 2.5l wagon using stock injectors(new WRX blue injectors). They're rated just slightly less than pinks.

Good idea getting the new turbo first.
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Old 05-18-2006, 05:10 PM   #6
mokujin22
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yeah; my original logic was that stepping up the motor without the turbo would prolong the life of my tranny. but really, i'm almost wasting money by not doing the turbo as well right now. good tunes are expensive... they should be; they take a lot of tuner and dyno time.

with $300-$500 a pop for tuning, i'd like to get my parts setup now to prevent having to re-tune the car everytime i change another part.

Tony
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Old 05-18-2006, 07:00 PM   #7
CK02WRX
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Mod your stock injectors and sell the pinks. Hell, if you me send your injectors and $10 I'll mod them for you and ship them back. You'll need to have them flow tested which will around $130 shipped. So, for $140 you'll have 800cc injectors. I'm sure you can get more than $140 for you pinks. Do you already have a walbro fuel pump?
I'm using modded WRX injector on my EJ257 long block with a FP Red turbo. I also use the stock fuel rails. If you do a "conservative tune" in hopes of not maxing the pinks, it would be a waste of time upgrading the turbo. I came close to maxing PE650 (mid 90 IDC) on the ej257 with a FP18G on 93 octane. You will max the pinks for sure.
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Old 05-19-2006, 10:56 AM   #8
mokujin22
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After reading up on it a bit; the 20G have to be significantly detuned to run safely with pinks.

I was thinking about sending my stockers off to be modded, but saw your reply. after a bit of poking around, i came across Kingpin's thread. Holy Crap!

Talk about an easy mod. I'll be blowing the dust off my blues and breaking out the dremel. Definately going to send them to Witchhunter before installation... put the highest flowing one in cylinder 4 and get on with life. Plus, used pinks will fetch me a lot of beer money (my helper is very costly...damn drunk.)

How's the car running? Through the breakin yet?

Thanks again,
Tony

EDIT: Sorry about the leak, dude. That sucks donkeys.

Last edited by mokujin22; 05-19-2006 at 11:04 AM.
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Old 05-21-2006, 04:15 PM   #9
CK02WRX
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Actually, the break in is going good. I have never thought a problem could fix its self, but the leak went any. I have new seals and I'll be keeping my eye on the oil level and the are where I found the leak. If I notice it leaking, I'll replace the seals.

I sent my stock injectors to rc engineering and they flow 804, 801, 800, and 799 and all were said to have an excellent flow patern. I know a lot of people have had good luck with them. I asked Phil, from Element Tuning, and he said they work great. He also said he will use them for up to 400whp on pump gas and 500whp on race gas.
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Old 05-22-2006, 12:35 PM   #10
mokujin22
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Quote:
Originally Posted by CK02WRX
Actually, the break in is going good. I have never thought a problem could fix its self, but the leak went any. I have new seals and I'll be keeping my eye on the oil level and the are where I found the leak. If I notice it leaking, I'll replace the seals.

I sent my stock injectors to rc engineering and they flow 804, 801, 800, and 799 and all were said to have an excellent flow patern. I know a lot of people have had good luck with them. I asked Phil, from Element Tuning, and he said they work great. He also said he will use them for up to 400whp on pump gas and 500whp on race gas.
schweet, sounds like the modded injectors are just what i'm looking for.

glad the leak's subsided.

Tony
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Old 05-24-2006, 04:39 PM   #11
gimmewar
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Im curious why you guys are saying the pinks will be maxed on a vf30 when vendors here sell vf34 and pinks as a package here all day long...

Mike
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Old 05-24-2006, 05:16 PM   #12
herewegoagain
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On a 2.0L, yes, the pinks shouldn't run out. 2.5L has a greater chance of it.
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Old 05-24-2006, 09:22 PM   #13
spongejosh
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[thread jack]

what about a stock sti 2.5 shortblock and stock wrx heads, turbo, everything.

i don't want lots of power, i want my current power with no lag. anything special other than new seals and gaskets?

[/thread jack]

josh
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Old 05-24-2006, 09:32 PM   #14
gimmewar
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You'll probably need some timing belt pulleys / tensioners and cam sprockets if you can't get yours off cleanly.

New clutch while you're at it, look to spend $500-1000 on top of the block for the misc parts.

Mike
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Old 05-25-2006, 07:52 AM   #15
mokujin22
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Not sure if you are referring to using the stock WRX turbo with the 2.5 shortblock, but it does not blow enough volume to push the EJ257. You will in all likelihood be unhappy with the stock turbo. (So I've been told).

Fairly certain that you will need new engine management as well (AP, Utec, etc).

Tony
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