Exhaust leak, or something else? Videi inside
 

Ok guy's I hate asking, but have racked my brains long enough. I have what anyone would call an exhaust leak. The tick tick tick tick sound that is so annoying. Heres the build set up. Stock twins running non sequential. Rather new build with just over 5000 miles

What I have done to look for it:
Removed everything from the Exhaust manifold to the Mid pipe.
Checking the exhaust manifold gasket for signs of fanning or obvious break/wear.
Check the exhaust manifold to turbo gaskets for signs of fanning or obvious break/wear.
Check Down pipe gasket for signs of fanning or obvious break/wear.
Changed gaskets, even though no signs of fanning or obvious break/wear.
Checked turbos for cracks extending past the gasket, or that are just really large. Compared cracks to the 3 set of other turbos that are good, and there really isn't a big difference from mine to the other 3 sets.
Looked and looked and looked for anything that just didn't look right. Tomorrow I'm planning on putting on one of the other sets of turbos to see id by chance that is the case. Myself and others really dought it is. But, it's the next step so far. Check out the video and have a listen. Maybe it's some fluk thing one of you guys has run into that is not an exhaust leak but sounds like one. I have had these on and off to check different things 3 times with no resolve. Any thoughts are greatly appreciated. And no I'm not going single............................................ .................yet.
http://s99.photobucket.com/albums/l2...t=MVI_0890.flv

Joe I will come over and see if I can help,does the car run right?

Car runs fine. The exhaust note changed a little. Late last night the thought of the exhaust itself going bad on the inside was brought up.?????????? Killing me.

It's not a "tick" sound at all. The exhaust note has changed. The RB dual tip has a very mellow sound with mid and low range. For a straight through (DP, MP, into RB dual tip) it is not loud at all. Best sounding for any type of stock-type twins.

Now it sounds like an exhaust leak at the DP/MP, or even possibly at the DP/turbos. Radical change in sound.

I have not listened to the video yet...but I have heard the car inperson.

Tony

I've spent a lot of time looking for leaks. Some things to note:

flanges can be bent or warped. Really crappy trying to get them to seal when they are like this.

used metal gaskets don't seal very well. I've used a thin knife to spread the layers of a used gasket, which helps, but a new gasket is superior. Only use the metal mazda gaskets.

Mating stock to aftermarket exhaust parts can result in very little gasket overlap.

My best technique for investigating exhaust leaks is to take it all apart and carefully inspect the gaskets for soot that shows blowby. Or, before final tightening each flange, use a .001 feeler gauge to poke all around the gasket to look for places that aren't getting clamped.

Dave

Great input and thanks for taking the time to reply. I hadn't thought about warping. I know I'm running these turbo's very hot ( and we are only woking on the tune, we've yet to max them.) 5 will check closer for warping.
All gaskets are metal and in very good shape. You mention looking for soot blowing by. That is what I meant by "fanning". When the soot blows out the leak, there should be a fan shape made from the soot. Same thing though. I know what you are saying.

I should add I have also poked all over the area in questing with the car running, with a stethoscope.

mine is doing the same thing after my trip back from summit racing...
havn't got a chance to look at it yet my prelude is under the knife right now(timing belt)
do you have a perfect boost pattern?? (i do)
my sounds the same ....without having it apart yet...im guess its a gasket..

mine will be on jack stands wed. when the hondas done....
keep us/me posted on anything you find....

brad

Boost, I believe, is fine. I have not gone over 10lbs since this popped up.

was wondering if you found anything...
got my fd on jackstands ...starting to pull y-pipe, etc...
just don't want to over look something if you found out what yours was...

brad