Exhaust Gasket/manifold Borked? [video]

[diamondjo]

So after giving it a quick (yet within the speed limit) squirt up to mount henry bridge I was promptly stuck in traffic for 45 minutes and after a while I started noticing this really weird noise whenever I pushed the accelerator. You hear it under normal circumstances on big old fords and that kind of thing and I once heard it on my wife's car when her exhaust gasket went. I had all these thoughts going through my head of "maybe the fans weren't hooked up after I had the FMIC installed and I've partially cooked the head", "maybe the heat has finally killed the old coil packs".

I can't help but think giving it a hard drive and then immediately idling it for 45 minutes has done some major bad stuff . I couldn't even stop the engine because we'd crawl forward every 30 seconds or so.

Have a listen; what do you think?

-- Should also add; no accusation intended by the "fans" comment, just one of the many possibilities that race through your head when your car is in pain and you can't pull over

-- Also: REALLY SORRY for cross-posting. I originally posted this in WA and almost as soon as I did, I realised that was a bit silly because it's not really the right place to post is it? I only posted there because that's kind of where I hang out. Oops!

[Sheriff Wan]

Is the car driving properly?

You wouldnt have done any damage just giving it a bit then crawling in traffic - its a car not a precious rare form of transport

If you suspect an exhaust leak try applying some soapy water over the area and see if it bubbles.

[boostn0199]

Thats the turbo to manifold gasket gone had same sound with mine, put your hand around where the gasket is and pull the trottle you will feel air on it, if you want a quick fix and dont wanna take it off to change the gasket rub sum exhuast cement around the flange but yeah ull have to redo that every now and then when it wears off.

[sickr33]

if you do use soapy water make sure you apply when manifold is cold to touch!

if you do it when it is too hot you run the risk if it cracking!!!

manifold to turbo gasket? NO!

it is the manifold to head gasket. you hear that tick tick tick on the down rev?

that is the exhaust gases leaking every time the exhaust valve opens!

if it was the manifold to turbo gasket you would hear a constant drone/leak not a ticking sound!

have you done any damage? NO!

do you have to change it? NO!

having said that if it was me i would change it because it would piss me off and you may be loosing a bit of response/performance

[boostn0199]

if you do use soapy water make sure you apply when manifold is cold to touch!

if you do it when it is too hot you run the risk if it cracking!!!

manifold to turbo gasket? NO!

it is the manifold to head gasket. you hear that tick tick tick on the down rev?

that is the exhaust gases leaking every time the exhaust valve opens!

if it was the manifold to turbo gasket you would hear a constant drone/leak not a ticking sound!

have you done any damage? NO!

do you have to change it? NO!

having said that if it was me i would change it because it would piss me off and you may be loosing a bit of response/performance

Your wrong when you said its not the turbo to manifold gasket, I had exact same sound on the revs and it was the turbo gasket, you will even get that tick noise on the revs if you have a exhust leak at the cat to the exhust except it wont be as loud and you will heat more at the back of the car then in the engine bay, but in this case my bet is the turbo gasket.

[mad082]

could be any of the gaskets really. on my 180sx i had i had the turbo actually come loose on the manifold. or it could be that you have broken some of the exhaust manifold studs, turbo studs or dump pipe studs/bolts or even where the dump pipe meets the front pipe.

when the car is cold grab a torch and check all the studs on the manifold/head to see if they are all there. some are hard to see so sometimes it's easier to just feel for them (hence why i said to do it when cold). also look around for carbon build up as you should be able to see evidence of where it has been leaking, even after just a short amount of time.

[perzn_34]

when i checked my car for pre purchase check the mech sed it had a exhaust manifold gasget leak, and missing a few bolts on the dump and turbo joint. ive been drving around for few months can feel the exhaust leak.

i can feel the missing bolts but i dont know how i can find out about the gasget leak?

[mad082]

the gasket will be leaking where the bolts are missing. simple as that. since it has been driven with missing bolts the gasket will be stuffed where the bolts are missing so you will need a new gasket either way.

[perzn_34]

nah the bolts are missing wer the dump pipe conects to the turbo... >> im thinking of just getting a after market 3 inch dump

the exhaust manifold gasget is aparently leaking but i have no proof, i cant hear any exhaust sound in the engine bay >>> dont know wat to doo

[boostn0199]

Well if you fix the dump and still get the leaking noise then you know its from your exhust manifold, dont know about you but I couldnt stand the sound for 1 day driving so replaced it next day and youll be losing some boost and power to.

[perzn_34]

i cant realy hear anyy noise from the dump pipe or the exhaust manifold gasget..

anyone know how much is the labour to change a dump pipe rufffly?

[mad082]

depends on whether the missing studs/bolts are broken off in the turbo. if they are then it will be much more expensive than just getting a different dump pipe.

[perzn_34]

sh!!!!t tru that ill go check now u got me worried mate lol

[perzn_34]

the holes on the turbo part is empty so the bolts probs got unscewed and came of. its just the two bolts on the buttom.

so howmuch would the labour cost be to install aftermarket dump pipe?

[mad082]

it isn't hard to do yourself. take maybe an hour and save yourself about $80 in labour.