Ok a I am just short of pulling my whole engine apart just to find this horrific engine noise. It was suggested that my main thrust bearings might have been thrown, so I dropped my oil pan and found nothing wrong under the block. cranks good, no metal shavings, large metal pieces, or any play in the rods. Where should I go from here? I have looked at my head as well. cams seem fine, can't see any problems with my valves either. I am about to drop my tranny and see if something is busted in there. I am a noobie with cars so I need to know if an expert can make any more suggestions on where to look for this rattle sound in my engine.

 

When does this sound? Idle, WOT, etc.?

 

well during idle it is faint, but with gas its really bad and very loud.

 

Is it a "knocking" or "banging" or "scraping" or "vibrating" type of sound?

 

ya is the noise you hear high pitched or is it like a low thud type noise? it could even be a leaking exhaust gasket like on the o2 housing to turbine housing, etc.

you can youtube for sounds also to give you an idea.. ie.. lifter tick, rod knock, exhaust leaks, etc

 

ok got a sound bit I took before I tore the car apart. Its not great cuz I did it off my droid so you will need to run it off quicktime. PM me if you want me to send it to your email via droid because I cannot attach the file

 

youtube vids suggest it isnt rod knock or lifters....I know I have an exhaust leak for sure. This just sounds like something else.

 

Great news everyone but also bad news....the turbo is bad. tons of shaft play but the noise sounds exactly the same as the ones on youtube with similar issues

 

If you have a loose or missing bolt on your 02 housing, the gap can make a loud clicking noise like your valve train is shot, or your bearings are toast. It can get really loud with very little gap.
If you take some vacuum hose, and use it like a stethoscope..put the hose in different areas and you should be able to find out where it's loudest, and pinpoint the problem.

N

 

glad you figured it out.. now when putting back on the oil pan use good RTV like RTV ultra gray and do not tighten down the pan right away just get it on partially snug then wait 25min then tighten the rest of the way.. will avoid any kind of leaks from occurring.. when you try to tighten right away when rtv is still wet it squeezes all the rtv out the sides..



you're to late lol. he figured it out.. but yes ill second what you said, the o2 gasket when leaking sounds horrible.

 

yah lets hope I am right about this fixing the issue. perfect excuse to upgrade the turbo setup