Carpokes Porsche Forum

Tom wrote: Fri Oct 15, 2021 2:28 pm DGUNS -- any interest in doing a cat-back muffler comparison? I'm still using the old SFR group buy muffler, but have been ready for something new for a long time. It's just really hard to get a sense of what the various options actually sound like on car....

DGUN951 wrote: Fri Oct 15, 2021 2:39 pm

Tom wrote: Fri Oct 15, 2021 2:28 pm DGUNS -- any interest in doing a cat-back muffler comparison? I'm still using the old SFR group buy muffler, but have been ready for something new for a long time. It's just really hard to get a sense of what the various options actually sound like on car....

I’d love to…. I’d have to see if anyone is willing to loan me some for testing

chris white wrote: Fri Oct 15, 2021 8:04 pm Most common failure is the goddamn sealing at the turbo mount. Here’s the hint - if everything bolts up with zero stress when it’s cold you may have issues when it’s hot. The entire loop from head to turbo expands by over 1/4” when hot….it pushes until the turbo cocks on the mount and leaks. That’s why you need a crow bar to line up the two flanges immediately after the header

DGUN951 wrote: Fri Oct 15, 2021 8:58 pm
Thanks for the tip I’ll keep an eye out… I’m not too worried, my old setup didn’t leak and This new one has a expansion joint on the up pipe that should easily handle 1/4 of movement. Also using his Dual gasket setup that’s supplied with the voodoo turbo hardware kit. BTW wouldn’t that engine mount tab on the down pipe help reduce movement by basically bracing the turbo? 3 mounting points instead of two?

chris white wrote: Sun Oct 17, 2021 6:49 am

DGUN951 wrote: Fri Oct 15, 2021 8:58 pm
Thanks for the tip I’ll keep an eye out… I’m not too worried, my old setup didn’t leak and This new one has a expansion joint on the up pipe that should easily handle 1/4 of movement. Also using his Dual gasket setup that’s supplied with the voodoo turbo hardware kit. BTW wouldn’t that engine mount tab on the down pipe help reduce movement by basically bracing the turbo? 3 mounting points instead of two?

You have a good point about the third point, I guess it comes down to proper use of a crystal ball to predict how long you will leave it in place!! Ease of serviceability vs robustness of mounting…my crystal ball is a little fuzzy on that!

DGUN951 wrote: Sun Oct 17, 2021 7:14 am

chris white wrote: Sun Oct 17, 2021 6:49 am

DGUN951 wrote: Fri Oct 15, 2021 8:58 pm
Thanks for the tip I’ll keep an eye out… I’m not too worried, my old setup didn’t leak and This new one has a expansion joint on the up pipe that should easily handle 1/4 of movement. Also using his Dual gasket setup that’s supplied with the voodoo turbo hardware kit. BTW wouldn’t that engine mount tab on the down pipe help reduce movement by basically bracing the turbo? 3 mounting points instead of two?

You have a good point about the third point, I guess it comes down to proper use of a crystal ball to predict how long you will leave it in place!! Ease of serviceability vs robustness of mounting…my crystal ball is a little fuzzy on that!

I mean… I guess all that time next to the particle accelerators as a kid didn’t do much if you need to use magic to figure stuff out