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Old 06-22-2004, 08:55 PM   #1
Unsung Boxer
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Default Opinion on Boost levels

Important things:

- 2.2L na block (open deck) w/ EJ22t 8:1 internals, O-ringed head.
- WRX Turbo/Intercooler/Fuel Pump
- EJ22t 360cc Injectors
- Greddy Emanage

Currently at 12lbs of boost. But can I do more w/ this setup? I assume my injectors are the weakest link. Anyone thing its the block?

-Jake
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Old 06-22-2004, 10:02 PM   #2
White 2.5rs
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bump er to 16
if it blows
get a closed deck
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Old 06-22-2004, 10:03 PM   #3
White 2.5rs
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after new injs of course
get fat cat turbos
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Old 06-22-2004, 10:17 PM   #4
Unsung Boxer
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your no help @$$
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Old 06-22-2004, 10:19 PM   #5
ExecNav
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Yum!

Maybe you can convince him to ship?

-Brett
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Old 06-22-2004, 11:13 PM   #6
no-coast-punk
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12lbs is all i would be comfy with on that setup, maybe 13 if well intercooled, regardless of injectors.
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Old 06-23-2004, 01:13 AM   #7
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this setup : 14

with 440 wrx injectors: 18

max tho...
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Old 06-23-2004, 01:29 AM   #8
subiekid
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Quote:
Originally posted by White 2.5rs
bump er to 16
if it blows
get a closed deck
you = stupid

with 360 injectors the most you can push is 13lb of boost. 16 lb and you will be running stupid lean.


You might look for some old school JDM 480 yellow top injectors. From what I have read they are a straight drop in, another local member has a jdm 2.0 and I want to try comparing them to mine to see if they work.

Also, nissan 300TT injectors fit into n/a legacy fuel rails, and the fuel rails bolt up to the ej22T so that might be another way to go.

What year is your ej22? Also, what intake manifold are you using?
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Old 06-23-2004, 04:06 AM   #9
White 2.5rs
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you moron i said w/ new injectors
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Old 06-23-2004, 11:03 AM   #10
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Anyone concerned about the Open Deck? I used to, but then i htought about all the people w/ JE pistons pushing more psi on open decks.

All external engine parts are stock ej22.
The Head is o-ringed to maintain the head gasket.

I assumed fuel delivery is my biggest limiter right now, but i dont know what it would be after that.

-Jake
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Old 06-23-2004, 01:19 PM   #11
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Quote:
Originally posted by Unsung Boxer
Anyone concerned about the Open Deck? I used to, but then i htought about all the people w/ JE pistons pushing more psi on open decks.

All external engine parts are stock ej22.
The Head is o-ringed to maintain the head gasket.

I assumed fuel delivery is my biggest limiter right now, but i dont know what it would be after that.

-Jake
people push fairly moderate levels of boostin the wrx and dont have any problems. With your cr I would think yoiu would be fine.
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Old 06-23-2004, 04:25 PM   #12
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Quote:
Originally posted by HOK
i've always had the opinion that a sturdy cylinder makes a happy piston... I have zero scientific evidence regarding this.. but the vibration and pressures at +20 psi just make a sleeved/closed deck block seem much more safe.
I would say anything lower then 250 hp you don't need to worry about the open deck issue. but anything over 300 or 20psi + on any (realistic) turbo i would do it as precaution. If you track it... i seriously would consider it.. but you are o-ringed... you may worry about the pistons before the block in your case..
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Old 06-23-2004, 10:11 PM   #13
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The issue with the open deck block isn't what boost levels it will hold before exploding, but what you can subject it to before turning the cylinder liners from nice circles into nice ovals. It will happen on any open deck engine given enough time especially if you track the car and see prolonged boost. This is why just about everyone with a 2.5 RS-T is having massive blowby issues and big compression losses after 30,000 miles or so if they are seeing boost frequently, regardless of how good their tuning is or how much boost they are running. I'm not sure about the 2.2 NA block... but I think the rod/stroke ratio might generate slightly less sideloading. If you had a good engine machinist weld bracing into your block in strategic places you could run ALOT of boost for a long time with no issue... but you will always be fighting an uphill battle with the flexi-ness of the open deck.
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Old 06-24-2004, 12:06 PM   #14
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What is the fuel adjustment with the 360cc injectors and the E-manage? Have you maxed them out up to 50%?

Just wondering bc I'm in the market for some high flow injectors and I'm thinking something bw 400 and 500 cc but I'm not sure. I got the 96 2.2 NA engine...not sure if the injectors are the same as yours but they should be...side feed.

Side note:

Do you track the car? What does it run if it does? Just curious what kind of times and what kind of cars you beat.
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Old 06-24-2004, 02:36 PM   #15
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wow...8:1, huh? Is that stock for the Legacy Turbo motor?

If it is...SWEET. I thought they were 9:1...

BTW, I'm doing the same swap in July...vrrrooom!

//marcus
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Old 06-24-2004, 10:49 PM   #16
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When you get bigger injectors, I will glady purchase those EJ22T ones from you.
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Old 06-25-2004, 11:06 AM   #17
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emanage is idling at -37%, and max boost i hit -20%... its all about the scale. Im not using auto correct.

8:1 is the CR... i think sometimes that mine might be lower, using EJ22na heads and head gasket. who knows???

I dont track the car yet, funny u ask, cuz i was gonna go soon.

Crk4 ill let u know when i get larger ones. I think u need my fuel rails too

-Jake
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Old 06-25-2004, 12:58 PM   #18
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OK, I wasn't sure whether I needed the fuel rails too, but I have the option of buying them from Kostamojen now since he's parting out his kit, so I guess I will buy that.

So how hard was the E-Manage to learn how to tune? And did you have previous experience with tuning before that? I see it says you are an automotive tech so you probably know everything about AF ratios and timing.

-Chris
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Old 06-26-2004, 01:30 AM   #19
IllNastyImpreza
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Question fuel rails

hhmm fuel rails...@ about what power level should one start thinking about upgrading fuel rails? I have heard my 98 rails lean out cyl #3...is this the only problem?
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Old 06-26-2004, 11:52 AM   #20
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Quote:
Originally posted by crk4
OK, I wasn't sure whether I needed the fuel rails too, but I have the option of buying them from Kostamojen now since he's parting out his kit, so I guess I will buy that.

So how hard was the E-Manage to learn how to tune? And did you have previous experience with tuning before that? I see it says you are an automotive tech so you probably know everything about AF ratios and timing.

-Chris
I wont likely seperate the injectors from the rails when i sell them.

Emanage is easy to work w/, but tuning is another thing. it doenst tune for you. Im a relatively new tech, and i dont have the equipment to do acurate tuning anyways... so i wont make any claims, ha ha!

-Jake
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Old 06-26-2004, 04:03 PM   #21
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Quote:
Originally posted by no-coast-punk
The issue with the open deck block isn't what boost levels it will hold before exploding, but what you can subject it to before turning the cylinder liners from nice circles into nice ovals. It will happen on any open deck engine given enough time especially if you track the car and see prolonged boost. This is why just about everyone with a 2.5 RS-T is having massive blowby issues and big compression losses after 30,000 miles or so if they are seeing boost frequently, regardless of how good their tuning is or how much boost they are running.
Who's car(s) is doing what you describe??? I thought that old "Built" EJ25's were running fine with open deck and 14-17 psi??? Curious as to your experience here.

Thanks.

MB

Last edited by markus; 06-27-2004 at 10:00 PM.
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Old 07-06-2004, 06:26 PM   #22
flathead
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cobb told me 10-12 psi with n/a 2.2, proper tuning and proper internals.
Subaru in parts, John, said 2.2 n/a injectors put out max. same as 2.5

2.2 turbo exhaust valve fits the n/a head. 2.2 turbo intake valve is actually smaller.

connecting rods are same between blocks.

What head gasket did you decide to go with?
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