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  • 304 SS exhaust system

    It's been a few years since I've posted on here, but I've been building a ton of stuff and now have a CNC plasma table to boot.

    Here's something I'm working on right now.

    Removed the front pipe and mid pipe, beginning the 3" front pipe section...


    Coping with the plasma cutter and a template. I find running low amperage with a 45A nozzle yields less cleanup on the inside of the tube. I'm sure it'd be even easier if I had some anti-spatter spray as well.


    It's tight.
    Thermal Arc 185TSW, Lincoln SP135+, 4-post automotive hoist, 2x media blast cabinets, 50 ton press, 80gal air compressor, 4-1/2"x6" bandsaw, 4'x4' Torchmate CNC table with plate marker, Hypertherm Powermax 65 plasma cutter, ultrasonic cleaning stations

  • #2
    I used to have a tough time with SS, but now I just love it, I know I can always improve though.



    Rough mock up. There will be a v-band in the long straight section to break up the front pipe from the mid pipe.



    Should be putting down 550awhp when the owner is done with it, it's an R32 Skyline.
    Thermal Arc 185TSW, Lincoln SP135+, 4-post automotive hoist, 2x media blast cabinets, 50 ton press, 80gal air compressor, 4-1/2"x6" bandsaw, 4'x4' Torchmate CNC table with plate marker, Hypertherm Powermax 65 plasma cutter, ultrasonic cleaning stations

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    • #3
      Hey man looking pretty rad. Should have taken video this looks interesting.

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      • #4
        Thanks! I haven't taken any vids of it...but I just have to weld up the hangers tonight and the car is coming off the hoist tomorrow. Will have some photos of the entire setup on and off the car. It's been a while since I've had a customer that wanted a full SS exhaust system, so it was a delight to build this setup as he was very particular and I like that in a customer. I think there is approximately 25' of welding in the whole exhaust system, the entire 4" portion was all 15 pie cut sections and there was quite a few to weld in place.

        I should have completed pics up shortly.
        Thermal Arc 185TSW, Lincoln SP135+, 4-post automotive hoist, 2x media blast cabinets, 50 ton press, 80gal air compressor, 4-1/2"x6" bandsaw, 4'x4' Torchmate CNC table with plate marker, Hypertherm Powermax 65 plasma cutter, ultrasonic cleaning stations

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        • #5
          Just needs the muffler welded on.




          I'll post more pics when it's up on the car.
          Thermal Arc 185TSW, Lincoln SP135+, 4-post automotive hoist, 2x media blast cabinets, 50 ton press, 80gal air compressor, 4-1/2"x6" bandsaw, 4'x4' Torchmate CNC table with plate marker, Hypertherm Powermax 65 plasma cutter, ultrasonic cleaning stations

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          • #6
            All bolted up and ready to go!

            Seal of approval.



            Thermal Arc 185TSW, Lincoln SP135+, 4-post automotive hoist, 2x media blast cabinets, 50 ton press, 80gal air compressor, 4-1/2"x6" bandsaw, 4'x4' Torchmate CNC table with plate marker, Hypertherm Powermax 65 plasma cutter, ultrasonic cleaning stations

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            • #7


              Might not look like much, but the bracket was cut on the CNC table. Quicker and easier than doing it by hand.


              Lightly polished SS tip welded onto the muffler


              All done!
              Thermal Arc 185TSW, Lincoln SP135+, 4-post automotive hoist, 2x media blast cabinets, 50 ton press, 80gal air compressor, 4-1/2"x6" bandsaw, 4'x4' Torchmate CNC table with plate marker, Hypertherm Powermax 65 plasma cutter, ultrasonic cleaning stations

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              • #8


                Thermal Arc 185TSW, Lincoln SP135+, 4-post automotive hoist, 2x media blast cabinets, 50 ton press, 80gal air compressor, 4-1/2"x6" bandsaw, 4'x4' Torchmate CNC table with plate marker, Hypertherm Powermax 65 plasma cutter, ultrasonic cleaning stations

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                • #9
                  Where did you source the tube and what muffler is that? What engine is this behind?

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                  • #10
                    Why all the pie cuts vs. elbows or bending? None available?
                    MM250
                    Trailblazer 250g
                    22a feeder
                    Lincoln ac/dc 225
                    Victor O/A
                    MM200 black face
                    Whitney 30 ton hydraulic punch
                    Lown 1/8x 36" power roller
                    Arco roto-phase model M
                    Vectrax 7x12 band saw
                    Miller spectrum 875
                    30a spoolgun w/wc-24
                    Syncrowave 250
                    RCCS-14

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                    • #11
                      Originally posted by Pepe View Post
                      Where did you source the tube and what muffler is that? What engine is this behind?
                      It's a Dynomax muffler, it was chosen by the customer. Tubing was sourced through a local vendor, they give me fairly good pricing for small quantity orders. The exhaust is built for an R32 Skyline that is being heavily upgraded.

                      Originally posted by MMW View Post
                      Why all the pie cuts vs. elbows or bending? None available?
                      Customer wanted that style, it was a lot of welding required but it was a lot of fun! Most systems I am building are with mandrel bends, they aren't difficult to source or cost (compared to labor cutting and welding). I honestly prefer pie cutting, if the customer can afford it.
                      Thermal Arc 185TSW, Lincoln SP135+, 4-post automotive hoist, 2x media blast cabinets, 50 ton press, 80gal air compressor, 4-1/2"x6" bandsaw, 4'x4' Torchmate CNC table with plate marker, Hypertherm Powermax 65 plasma cutter, ultrasonic cleaning stations

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                      • #12
                        Originally posted by Conrad_Turbo View Post
                        Just needs the muffler welded on.




                        I'll post more pics when it's up on the car.
                        Hi Mate, I own an R32 GTR Drag Car, just sold my 4" mandrel bend stainless exhaust and I purchased 4" titanium tubing 1mm wall and 4" titanium V band rings, I just wanted to know how u cut the angles on the tubing?? a cold saw or band saw?? and What angle did u use for your pie cuts cause that looks really really good,

                        Cheers Matt
                        Racebred Enterprises

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                        • #13
                          Originally posted by matthewe2108 View Post
                          Hi Mate, I own an R32 GTR Drag Car, just sold my 4" mandrel bend stainless exhaust and I purchased 4" titanium tubing 1mm wall and 4" titanium V band rings, I just wanted to know how u cut the angles on the tubing?? a cold saw or band saw?? and What angle did u use for your pie cuts cause that looks really really good,

                          Cheers Matt
                          Racebred Enterprises
                          Just saw this now so I might be a bit too late. I cut all the angles on the bandsaw. IIRC I'm pretty sure it'd be 15, that way you can stack up to 45 and do jogs with the cut tubing.

                          You can see more on my site: www.mint-design.ca
                          Thermal Arc 185TSW, Lincoln SP135+, 4-post automotive hoist, 2x media blast cabinets, 50 ton press, 80gal air compressor, 4-1/2"x6" bandsaw, 4'x4' Torchmate CNC table with plate marker, Hypertherm Powermax 65 plasma cutter, ultrasonic cleaning stations

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                          • #14
                            very nice work. 18 gauge? Also, what kind of settings were you using?

                            I'm sure the settings are more of a personal thing with tig, but i'm kind of new to welding, and this is the kind of stuff i want to do down the road.

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                            • #15
                              Very nice work.

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