Charles@dundonmotorsports

Yes. I can do titanium as well. I would expect the cost to be 3x that of our current retail price after sourcing and or having the valves, flanges, vbands made and the bends purchased. Welding TI bumps the cost up a bit as well just from the process to weld it correctly.

usctrojanGT3

Curious, how much weigh does the set up save compared to the OEM set-up with the oem catted headers and side mufflers?

911_RS

And maybe save another 10lbs??

Nizer

Now it's getting interesting!

How about Robert's question on bending vs welding of tubes?

Charles@dundonmotorsports

since this uses the stock center muffler, there is no weight savings there, The headers weigh almost the same as the stock ones with cats, give or take, so the side mufflers are the major weight savings. I think it is like 35-38lbs lighter than stock? I would have to check money2536's thread again as he weighed everything.


Currently these headers have welds at the flange, and at the step only. I have worked to minimize the number of welds already. I can go a step further and get custom tooling made to bend the tubes out of one piece of tubing, and then create another tooling fixture to clamp the tube and hydro form expand the secondary part out for the step. This would eliminate all of the welds on the header tubes.

The slip fit collectors I would leave because of heat expansion,

the secondary side pipes I can do the same but again it is several pieces of custom tooling per piece to get them done. on the side pipes it would only eliminate the one weld in the middle of the 3" pipes. the 2" and flex into the top of the center muffler would still be the same.


20ga TI would be slightly lighter than 20-22ga Inconel yes, I would expect the headers to go from weighing 10lbs each to about 4lbs each, and the secondary side pipes from about 6lbs to about 3. that makes it about 14lbs give or take. again I am just making estimates based on the material weight differences.

911_RS

It won't crack at some point right? Due to the heat under there...

Jamie@dundonmotorsports

Everyone keep in mind the custom tooling to hydroform etc, is in the $xx,xxx range. So not for the faint of heart...

Charles@dundonmotorsports

In my experience cracks generally happen from thermal expansion and vibration. .025-.035" wall inconel still retains a lot of strength if it is prepared and welded correctly. The product also must have been built correctly and installed correctly as to have no preloaded stress when all bolted down.

Titanium has roughly 2x the strength of aluminum but has the similar weight and can be very brittle and more often than not can crack from vibration combined with poor weld quality and contamination.

bronson7

I'm just sitting back in the wings enjoying all this stuff. Thanks boys for all the education. Really enjoying following this thread.

Nick Yoskin

Hey Jamie is there anymore vids or data coming out soon?
Always up for some vids!

consolidated

How much louder is this system than a rear bypass? Sorry if I missed it somewhere.

Charles@dundonmotorsports

It's louder, but sounds better! i think Matt said its 30-40% louder. Maybe someone else said that too.

Nick Yoskin

YOU SAY YOU WANT TI?! HERE YOU GO.
Buddy who has some skills for sure.

Charles@dundonmotorsports

Yup. Now build a full set of headers from pie cuts.

I would actually get TI bends to build my stuff instead of pie cuts. Pie cuts are A LOT cheaper for the material but there sure is a lot more welding.

Nick Yoskin

Oh yeah for sure, pie looks pretty for after turbo section but headers, never.