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Old 01-14-2004, 04:48 AM   #76
STi City
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your car may smoke for a while ..... don't worry ... be happy.. you don't have boost creep. Nah, it's just the paint and WD-40, it goes / burns away in a day. If you got cat, then paint may be a problem, clean it up before install.

you may need to set your turbo boost higher, because your wastegate will be more efficient.

I kind of got "grind happy" and grinded a bit too much, so I needed to up the boost controller more. For XEDE users, like me, just up the boost on the upper loads (75% to 100%) & all above 2k - 3k RPMs.
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Old 01-14-2004, 11:50 AM   #77
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Quote:
Originally posted by 300blueballs


Trey - my friend had air tools but you can get a Dremel at any hardware store and get a grinder for it and a couple of drum sander bits.

I have a Dremel and have access to a shop with air tools. I'd rather use the sir tools.

Where can I get a carbie grinder and drum sander from? I assume that it would attach to a standard air tool.

Thanks
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Old 01-14-2004, 11:56 AM   #78
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you can use the dremel kind. you can find it at home depot or any hardware store. $3 - $4.
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Old 01-14-2004, 11:58 AM   #79
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Quote:
Originally posted by TreyS
I have a Dremel and have access to a shop with air tools. I'd rather use the sir tools.

Where can I get a carbie grinder and drum sander from? I assume that it would attach to a standard air tool.

Thanks
Home Depot, Lowes, or local hardware store.

I used a cylander shaped grinder for the actual wastegate hole. Then I used a grinder with a rounded end for grinding away and smoothing away the material under the wastegate hole (through the uppipe area). You should get bits that are extended out to grind away beneath the wastegate (thru the uppipe hole) in order to reach the area. Probably need about a 2"-4" extended grinder piece.

Last edited by 300blueballs; 01-14-2004 at 12:13 PM.
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Old 01-14-2004, 12:28 PM   #80
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cool, thanks!
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Old 01-16-2004, 01:00 PM   #81
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Quote:
Originally posted by Red Rocket
I will also step up and remind everybody that I was the first person on NASIOC to port a IHI turbo wategate, on a VF29, on Feb. 15th, 2003.

Kevin
lol who cares
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Old 01-26-2004, 02:50 AM   #82
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I got a link to this thread in a nasty message sent to me...

The idea of porting wastegates has been around as long as wastegates have been around. It's not new.

To set the record straight - Not once did I ever make any claim about being the first, the fastest, or the best at anything. My ego and my penis are of normal size.
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Old 01-31-2004, 11:34 AM   #83
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...I rightfully take credit for my accomplishment. Get off your god damn high horse.
Does anyone else see the irony here?
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Old 02-02-2004, 11:14 PM   #84
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Impreza WRX STi ANSWER ME FAST PLEASE!

I have a 2004 STi and was going to let my mechanic friend port the waste gate with the turbo still on the car.

It does not come apart like my old WRX, so if you were real crafty and careful could you do this?

Hes going to try it tommorrow 2/3/04.

So if you get this message PLEASE email or PM me right away . Thanks greg

Just in case my email is:

galtorfer@saffairs.msstate.edu

I think my email address is already in NASIOC, but just in case!
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Old 02-03-2004, 12:27 AM   #85
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Default Re: ANSWER ME FAST PLEASE!

Quote:
Originally posted by DangerousWRX
I have a 2004 STi and was going to let my mechanic friend port the waste gate with the turbo still on the car.

It does not come apart like my old WRX, so if you were real crafty and careful could you do this?

Hes going to try it tommorrow 2/3/04.

So if you get this message PLEASE email or PM me right away . Thanks greg

Just in case my email is:

galtorfer@saffairs.msstate.edu

I think my email address is already in NASIOC, but just in case!
thats ghetto. what if shavings get on the turbine/shaft/seals? id want to thoroughly clean and blow it all out. i would suggest picking up some spare nuts and bolts, especially that stud on the lower left (driver side) as these things can strip and break. also some wd40 or your favorite penetration lube.
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Old 02-03-2004, 01:15 AM   #86
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Impreza WRX STi Instructions?

Is there any thread or web site with step by step, hell pictures would be even better on how to port the waste gate

Does the entire turbo have to come off or does just part of it? It looks like one solid piece.
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Old 02-04-2004, 07:15 AM   #87
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I hear from a lot of people that the turbo exhaust housing side can come off, without taking the entire turbo off. I did not do that personally, I took the whole turbo off. But they say you can just loosen/take-off that clamp in the middle of the turbo and pound/tap the turbo apart,.. gently. Then you do not have to take off most of the hoses. Because, when you put back the turbo, lining up and connecting the hoses is really a pain.

Not really sure which way is the easiest method: splitting the turbo or just taking the whole turbo off.
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Old 02-04-2004, 09:36 AM   #88
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I used to creep up to about 21psi between 5-6000 RPM with a straight hose from the turbo outlet nipple to the wastegate actuator. After mildly porting the wastegate, my creep is down to about 17psi at 7300rpm. I can live with that.

First, remove the circlip attaching the wastegate actuator rod to the flapper arm.


For my VF34, the flapper door is 1.221" in diameter. The non-modified wastegate hole diameter is .986". Assuming I wanted to keep a .050" lip for the flapper door to sit on and seal, that gave me .134" to work with.


Remove the 10mm nut securing the clamp, then remove the clamp securing the exhuast housing.


Instead of allowing the exhaust housing to fall, I tapped around it lightly until I could slightly move it with my hand, then gently wiggled it off the rest of the way. You don't want the housing to touch the blades on the turbine wheel.


No need to worry about marking the exhaust housing or center section before you remove the exhaust housing - there is a small roll pin in the bottom of the center section to align the exhaust housing when you re-install it.
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Old 02-04-2004, 09:36 AM   #89
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The unmolested wastegate opening. You can see how much area we have to work with by the shiny portion of the sealing surface.


My final hole ID was 1.078". I removed .092" of material from the lip - about 2/3rds of what I could've removed. In my case, the flapper door didn't sit exactly centered on the opening - it sat a bit toward the outside (toward the pivot point) - so I concentrated more on that side of the hole.

There is considerable room for improvement besides simply making the opening larger. I rounded all corners and edges inside, and removed all flow trips to make a very low resistance path for gasses to flow through the wastegate.








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Old 02-04-2004, 09:37 AM   #90
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Quote:
Originally posted by DangerousWRX
Is there any thread or web site with step by step, hell pictures would be even better on how to port the waste gate
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Old 02-04-2004, 11:57 AM   #91
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Thumbs up Thank you! Very impressive!

I believe i came out better than anyone in STi history with my mods.

Had the cat back on. We took the trubo off, ported/polished it. Found a factory blemish on the waste gate door that would not let it close totally so i never had total boost, around 13.2 PSI since day one.

Now with the Helix cat free down pipe and the INCREDIBLE JOB my mechanic did, im getting 15.5 pounds of boost and it feels like a new car.

Its really impossible to explain the difference. Its that big, my mechanic called me and was like, 1. You not going to believe how bad this casting is on this turbo, 2. after he was done he drove the car also and down right could not believe the difference.

We also did the perrin light weight crank pully, and that FREE vishnu "How to reset your factory computer for more horse power trick" and it worked just as they said.

IM SO HAPPY! I get read line in 3ed, 4th , and 5th dam near like 2nd now. Talk about amazing.
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Old 02-04-2004, 12:16 PM   #92
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Great news man - congrats.

-st
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Old 02-04-2004, 03:04 PM   #93
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Quote:
Originally posted by DangerousWRX
I believe i came out better than anyone in STi history with my mods.

Had the cat back on. We took the trubo off, ported/polished it. Found a factory blemish on the waste gate door that would not let it close totally so i never had total boost, around 13.2 PSI since day one.

Now with the Helix cat free down pipe and the INCREDIBLE JOB my mechanic did, im getting 15.5 pounds of boost and it feels like a new car.

Its really impossible to explain the difference. Its that big, my mechanic called me and was like, 1. You not going to believe how bad this casting is on this turbo, 2. after he was done he drove the car also and down right could not believe the difference.

We also did the perrin light weight crank pully, and that FREE vishnu "How to reset your factory computer for more horse power trick" and it worked just as they said.

IM SO HAPPY! I get read line in 3ed, 4th , and 5th dam near like 2nd now. Talk about amazing.
1- What is your diameter now?
2- could you post me a link for vishnu trick?

thanks
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Old 02-04-2004, 03:52 PM   #94
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For those that just remove the exhaust side on the car......



[size=large]MAKE SURE THE OIL RETURN LINE IS IN PLACE! before you put everything back together.[/size]

You'll have to take it all apart again to fix it.

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Old 02-10-2004, 06:52 PM   #95
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i dunno if its been posted.....too lazy to read.....

but i have an HKS downpipe.....with a plate where the wastegate exits....and i dont have have any boost creep....

my mods are.....HKS Downpipe.....and removed axle-back

no boost creep....no problems.....thank you HKS
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Old 02-16-2004, 03:12 PM   #96
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Quote:
Originally posted by BoostedBoxer
i dunno if its been posted.....too lazy to read.....

but i have an HKS downpipe.....with a plate where the wastegate exits....and i dont have have any boost creep....

my mods are.....HKS Downpipe.....and removed axle-back

no boost creep....no problems.....thank you HKS
what year is your sti? is it an 04? i have a hks downpipe and i'm creepin bad. Little help please...cause if this gets worse with warmer weather...i'm screwed! I'll have to buy a bigger turbo. I have been thinkin bout sendin the turbo to deadbolt but dont have the technical skills for removal and re-assembly....which means my shop would be gettin some good labor$$ from me. anyone? anyone?
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Old 02-16-2004, 03:13 PM   #97
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and i kept the stock cat-back to avoid the creep thing...but that didnt work for me.....still creepin...and when i go wot on the highway in 5th and 6th i get fuel cut...HELP!
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Old 02-17-2004, 08:50 AM   #98
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Quote:
Originally posted by salisburyv
and i kept the stock cat-back to avoid the creep thing...but that didnt work for me.....still creepin...and when i go wot on the highway in 5th and 6th i get fuel cut...HELP!
Some people (including myself) experienced boost creep with a downpipe + stock cat-back configuration. I ended up getting the wastegate ported. You probably should. Ask around, there must be a reputable garage around your area. (I did mine at Godspeed Inc.)

When the weather gets warmer, the boost creep issue might get a little better (not worse).
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Old 02-17-2004, 04:01 PM   #99
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Quote:
Originally posted by salisburyv
Little help please...cause if this gets worse with warmer weather...i'm screwed!
Boost creep is worse in colder weather it gets better in the heat.

BTW Im running an hks downpipe I was wondering if anyone has reached fuel cut in 3rd gear with any turboback exhaust. Im asking because Im thinking of runnng open downpipe for autox events where the car will rarely see 3rd gear and never 4th. Almost all 1st and 2nd.
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Old 02-17-2004, 04:27 PM   #100
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I had fuel cut in all gears down to 1st gear but the temp was down or around the negatives. I have a TSX DP and 3" borla hushback, no cats.
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