loud whistling noise under load and boosting

[cambo]

I checked with a local mechanic today and hes discovered a crack in the pipe connecting the exhaust manifold to the turbo, the pipe itself is approx. 2-2.5" in diameter. Does anyone know what the part number is soes that I can quote it to my ford dealer to see if it is under warranty?

[greasltn]

I don't know the part number off hand, but it sounds like the up-pipe. Which side is it?

[jascott]

You mentioned a whisteling noise. Any chance this sounds like an exhaust leak type sound, when under load? I have this and am trying to track it down...

[cambo]

We found the leak to be coming from the up pipe on the passanger side at the rear of the motor which is impossible to get to, I can see that the expansion joint is covered with soot, I also found out that this part is covered under warranty thank god, wish me luck!

[Tarheel_6.4L]

Originally Posted by jascott

You mentioned a whisteling noise. Any chance this sounds like an exhaust leak type sound, when under load? I have this and am trying to track it down...

Can you smell exhaust in the cab? I had a loud whisteling noise and it turned out to be a hole in the charge air cooler. Hopefully you find it because if yours sound's like mine, it's annoying as crap.

[jascott]

I've checked the up pipes and don't see any soot anywhere. I've also checked the boots and don't see any holes.

I read somewhere else that the cab has to be lifted or the tranny dropped to change the up pipes.

[cambo]

well, my cab has to come off now!truck is back to stock and going into ford on tuesday, what a ****in nightmare!

[First_Ford]

I don't understand how it is easier to remove the cab than to remove the trans and change it that way.

[cambo]

ya ford ended up pulling the transmition instead of yanking the cab off, but they covered it all and with little hassle

[harley1rocker]

wonder why ford went that route? i mean,pullin the cab just to get to somthin minor seems like a hassle...does any one know how the 6.7 is? do you have to pull the motor to get to the injectors???