Chapter 6 - Exhaust Possibilities - Modified Stock-ish Pipe
So the longer-term plan is to build a pipe from scratch, using EngMod to get a good initial design. As you may have seen in other threads recently, I'm thinking of a couple accessories to add to it, but starting out, a good old fashioned expansion chamber. But, I don't feel like tin-snipping the pieces for it, having done that before. I plan to get it laser cut to save time and hassle, and end up with a better result, but that means I need to be pretty certain of the dimensions first - not quite there yet. Thankfully it will be pretty cheap, like $30 or so, for the laser cut pieces. So no biggie if the first design isn't perfect.
In the meantime, I wanted to throw a stock pipe on there from the Pro Sr. You can get new pipes from FMF or Pro Circuit I think, but I was pretty sure I'd be hacking into it to change the shape regardless, so didn't want to drop $200+ for that. Stock replacement was about the same, but then a used aftermarket pipe came up that I'd never heard of - from "Doma." Decent price for it, so I got it, and spent some time reconfiguring it to fit. Here's how it came to me, looking super ready for TIG welding on the header...
...and after hacking and rotating in three spots. Kinda sucked to get it clean enough for TIG:
And here it is mounted up, with some other stuff done in the meantime. Experimented with some TIG brazing here, where the stinger attaches (another cut and rotate), and where the muffler goes on. For now, muffler is not removeable, because I can't repack the thing anyway, refuses to separate. There are some other updates shown in this photo, but more on them later: