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Old 06-20-2004, 02:28 PM   #1
munkis
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Default What headers are you running on your rs-t and egt bung??

It seams my stock exhaust manifold might be cracked, I have an exhaust leak somewhere...and ive narrowed it down to that area...I havent taken off the heat sheidls yet..but its a good chance...either that or a cracked a head

If they are cracked...I might just replace them with headers...good or bad thoughts on that?

If I just put another set of stock headers on anyone know where I can get a bung to weld on for the egt probe?

I cant tell if it comes with the autometer replacement egt probe kit.

thanks

Jay
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Old 06-20-2004, 02:41 PM   #2
Unsung Boxer
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ok there is a great way to tell where your exhaust leak is... run the vehicle and run your hand about 1" away from the pipe (be careful not to burn yourself) You can feel the exhaust leaking out.

It could be leaking behind the stock heat shields, so this may be easier said than done.

I really doubt you have a cracked head. But if you do, it should be apparent, when you pull the manifold off. YOu should be able to look up at it, and see any cracks. Really doubt it.

One thing your forgetting is the most obvious. The gasket between the manifold and the head. These are known to blow out, esp if you disturb them (i.e. taking the manifold on/off). They are relatively cheap from subaru (about 8 bucks).

The bung for the EGT probe, i believe is the same thread pitch as for the O2 sensor. This should be easy for you to confirm.

Holley makes these bungs, they are about $4 a piece. Try www.Summitracing.com or www.jcwhitney.com or Holley's website.

You cannot just use a nut because it is a pipe thread. Use antisieze on exhuast componants.

-Jake
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Old 06-20-2004, 03:25 PM   #3
no-coast-punk
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My manifold cracked under the heat shields, if you live in a wet climate moisture gets trapped there and they're really prone to cracking/rusting.

Be aware that if you move to aftermarket headers it will always hurt your spool times a bit, you pick up alot more power on the top end though.
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Old 06-20-2004, 03:28 PM   #4
kaos200
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just to clarify the egt and 02 bungs are different
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Old 06-20-2004, 04:30 PM   #5
munkis
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I guess I should start off with what happned...

Friday night I was having a bit to much fun with my car I shouldnt have been pushing it so hard but its hard not to when its so fast...

reason being my egts are a bit high when im near full throttle, full boost, and redline...tipping over 1600...

So I managed to blow out the gasket between the stock exhaust manifold and upipe, and bork something else, cause when I started up saturday morning it idle at 2k and I heard the exhaust leak..., It would not boost at all, and barly ran, and backfired louder than dynomite going off...

Limped the car to work..

Subaru didnt have the gasket i needed in stock, so I found a ford gasket (im a lincoln/jaguar tech) in my parts dept to that mateched up pretty dam good, so I put it in, and it still leaked, I took it back out and cleaned the two surfaces as best I could without taking the header off or the upipe out cause I didnt have time, and I couldnt get the egt probe out of the manifold.

Put the gasket back in and it seemed to work.

After that the car would idle like crap. and still woudnt boost.

I pulled the codes and amont the normal ones I always get I got two for the idle air control system...It didnt shock me cause the car never idled well to begin with..

partly because (i think), the idle air control motor is hooked up to the intake tube after the pcv hoses, It should be the first hook up after the maf, I think crankase vapors are clogging up the iac..

anyway so I unplugged the iac yesterday and it idled around 900 rpms, but at least it ran and I could drive it home, it still backfired like a son of a bitch but ran much better and I was getting arond 9psi of boost a little late..

So this morning I went out and started the car up, and it ran like crap... So I hooked the iac back up and it seemed to run ok. great!.

I then decided to reset the ecu. After I reset the ECU the car ran fine, idle is still a little off, but no worse than it was before.

I took the car for a shake down, and I coudlnt believe how much better it ran.

The other thing is the j&s is working now..it never use too...it retards timing now on heavy rev matching/double cluthing....like on the highway at 75mph from 5th to 4th or 4th to 3rd at lower speeds. Dont know if I should be worried about that but im gonna start a new thread on that issue.

so yea, now the exhaust leak has seemed to disapear...maybe the egr valve was getting stuck, *shrug* I have no codes now except for the 'normal' ones I alwasy get.

sorry for the long post.

but im still wondering about headers...

thanks Jake, i tottally forgot about summit racing, ill see what they have.

Jay
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Old 06-21-2004, 04:21 AM   #6
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like Kaos said, if the EGT bung is a differen thread pitch/pattern, the 02 bungs wont work.

find out what the pitch is, u can prolly get it from Autometer for dirt cheap. Email/call them.

-Jake
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Old 06-21-2004, 11:46 AM   #7
Hitokiri
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yo I have an extra autometer EGT probe bung and male to male adaptor piece that fits between the bung and the probe.

it is for the regular EGT probe NOT the competition probe! That why I didn't use it because it was the wrong thread for my competition probe.

I am near boston. If you pick it up you can have it.

Autometer will most likely ship you one for free if you call then and tell customer service what happened. They sent my the one I have for free. Didn't even charge me shipping. THEY RULE!!! Best customer service EVER!

autometer:
413 West Elm Street
Sycamore, IL 60178
Tel. (815) 899-0800
--
Fax. (815) 895-6786

later,

Todd
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