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Thread: New Catalytic Converter Fabrication

  1. #11
    Senior Member Azmodon's Avatar
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    Sure thing :P I've got enough left over material to make 1 more pair anyway - but I do want to do quite a bit of testing on them, I have 1/4" x 1/2" bar that can be added as a reinforcing rib if it sees any deflection. The computer stress test said it should be fine but that's perfect world lol.

    Welding of the cat is complete, just need to notch the slip joint so the clamp can really squeeze on there.

    Used damp paper towel to protect the core, they only started to smolder by the very end, the dry ones/ those with acetone on them on the work bench weren't so lucky lol

    tacked in, mind the gap
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    Due to heat issues (**** gas), had to stack tacks. I tried to do tig style laywire... while using the mig... it sort of worked but not easily enough to be reliable (was using 3/32, if I had thinner stuff it would've been easier)
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    smaller end - same deal
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    1/32 gap between flange and outer tube, 1 root and 3 caps later
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    What the bigger side ended up looking like after 2 more rows of tacks (one above the joint, then one at 90 to the body, directly on the cats lip)
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    Used vertical stitches on the short side, it seemed to hold up better to the heat.
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    Last edited by Azmodon; 02-28-2019 at 03:08 PM.

        __________________________________________

        click to view fuel log View my fuel log 2015 Micra SV automatic: 7.1 L/100 km ... 39.9 mpg (Imp) ... 14.1 km/L ... 33.3 mpg (US) ...


  2. #12
    Senior Member Azmodon's Avatar
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    The overall length target was 13.125" ... I'm pretty happy with it

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        __________________________________________

        click to view fuel log View my fuel log 2015 Micra SV automatic: 7.1 L/100 km ... 39.9 mpg (Imp) ... 14.1 km/L ... 33.3 mpg (US) ...


  3. #13
    Senior Member Azmodon's Avatar
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    I don't like how I've made this a combo- thread of Cat + tabs... may need to modify this when I finish the other side...

    Got one side done, but then GoT came on, so now that the rain's finally stopped I may be able to finally put the other side on and actually test them out / re-align my tires as I'm currently toed out like 3 degrees lol

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    Looking at this now I'm wondering if an even easier fix would have been to mount rod ends to the lower control arm, or just use the end links for a honda's rear end that are like 2 inches long and reinforce the mounting surface. Would lose about 30% of the leverage but it'd be better than nothing.

        __________________________________________

        click to view fuel log View my fuel log 2015 Micra SV automatic: 7.1 L/100 km ... 39.9 mpg (Imp) ... 14.1 km/L ... 33.3 mpg (US) ...


  4. #14
    Member Bobaganousch's Avatar
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    Wicked work! What size front sway bar are you planning on running?
    N/A Subaru Addict...
    First Nissan Commuter

  5. #15
    Senior Member Azmodon's Avatar
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    just the stock one for now, it had been disconnected since I swapped suspension (ordered the 'no sway bar tab' kind), I may swap it out but am more focused with the rear end right now.


        __________________________________________

        click to view fuel log View my fuel log 2015 Micra SV automatic: 7.1 L/100 km ... 39.9 mpg (Imp) ... 14.1 km/L ... 33.3 mpg (US) ...


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