Exhaust leak
 

Have an exhaust leak from around the drivers side head.

Got a new set of headers and UP pipe courtesy of Ultrex and changed it over but I'm concerned my problem is worse than just a shattered up pipe. The exhaust leak hasn't gone and sounds very tinny.

Got a couple of pics attached to see the mount area. This bolt in particular has gone on twice as far as the rest and still isn't tight. Have a feeling the head side is corroded quite badly and I'm just pulling the stud out with every turn.

[IMG]http://tapatalk.imageshack.com/v2/15/03/01/bbb5cb6aa68be98137bd3cff14f0704e.jpg[/IMG][IMG]http://tapatalk.imageshack.com/v2/15/03/01/ce8e66ba6a52f1b7e34093ced467a06f.jpg[/IMG][IMG]http://tapatalk.imageshack.com/v2/15/03/01/0b05c7d85fcf696ad7f3c539d7ef0b1d.jpg[/IMG]

Put another nut on that stud that keeps coming out/loose, tighten the nut up so it's against the existing bolt/nut then grab a socket an a bit of elbow grease and tighten up that bolt until the stud is in the right length and the nut is on tight, then just un-do that 2nd bolt and take it of.

Also chuck on heaps of high temp sealant!

Hope that helps champ


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Don't use high temp sealant unless you want your car to stink like hot rubber for an hour after you turn it off. All you need is a genuine subaru gasket on each side, they are like 13 bucks each, and have a metal seal and composite flange.

If you're gonna drop your headers to change gaskets anyway, clean the threads and make sure the studs are threaded up far in the block. Don't use any anti seize unless it's very high temp (1000C+) or it will stink and smoke.

Tighten the bolts to (35Nm? check your years service manual) then after a few drives tighten them again. Alternate between cylinder banks when tightening.

Good luck :)

See the gunk around the head? Is that high temp sealant? Looks to me like it was holding the studs in place which I'm hoping I'm wrong.

ok wow, just seeing that. If that's the case, that could indicate a serious crack in the head, so it's probably causing the header flange to not sit correctly.

I've got fresh gaskets on and 2 studs in particular won't tighten. You can see how much stud I've used and it was after I saw the green shit.

I'm going to drop the headers again and see if the head is ok. Helicoil it properly. Hope the head isn't completely screwed.

Let us know how it goes mate, I'm interested to hear what it is!


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I was hoping someone on here could tell me lol ... might have seen it before :)

I did my up-pipe and headers, I didn't have any cracks or excessive sealant, but I one of my studs were coming loose an started un-screwing. I just put 2 bolts on and that fixed the stud from coming loose and just took of that 2nd bolt.
Hopefully the block/rocker covers aren't cracked man!


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Exhaust leak
 

I'll check this weekend. Was pretty deflated after spending 2 whole days changing them over.

Did it by myself and had old nut problems. Rounded nuts etc. Every knuckle has a chunk out haha