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Polishing Exhaust

Discussion in 'Exhaust' started by Fast Willy, Jul 11, 2016.

  1. Fast Willy

    Fast Willy Active Member Established Member

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    I've seen some of you guys polish your cat-backs in the past and was curious what you guys feel is the best way to go about this. I want to try and polish my magnaflow cat-back just curious if some of you have have any tips or tricks.
     
  2. JuStAkId

    JuStAkId Just roll with it Established Member

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  3. GodStang

    GodStang Well-Known Member Established Member

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  4. dom418

    dom418 Well-Known Member Established Member

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    I've done it but never again I can tell you that much. Many hours and numb fingers. Take it to a shop and have them do it, it will come out better and save you 16 hours of your life
     
  5. 04sleeper

    04sleeper Runs On "Liquid Gold" Staff Member Super Moderator

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    It's not for the faint of heart! LOL

    Let me know if you have any other questions.
     
  6. 03cobra#694

    03cobra#694 Want to play a game? Staff Member Super Moderator

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    :thumbsup:
     
  7. Fast Willy

    Fast Willy Active Member Established Member

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    Thank you very much guys I'll post my results once I'm done. Hopefully the Magnaflow turns out just as nice even though I believe thats 304 ss and the borla is somewhere in the 400? But I've read different things on this as well.
     
  8. MagnaFlow

    MagnaFlow Authorized Vendor Authorized Vendor

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    Our exhausts are all composed of 409 stainless, and should polish up nicely! We'd be interested to see some pictures of it when you're finished!
     
  9. 50stangpower

    50stangpower Well-Known Member Established Member

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    My magnaflow is all rusted. I thought 409 didn't rust?
     
  10. centerforce

    centerforce Member Established Member

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    .
     
    Last edited: Jul 21, 2016
  11. MagnaFlow

    MagnaFlow Authorized Vendor Authorized Vendor

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    It is possible for all stainless steel to develop rust in the right conditions, though it is uncommon to see our systems have it severe enough to effect the integrity. In most cases, any light surface rust can be removed by lightly scrubbing with a scotchbrite pad, or something similar.
     
  12. Fast Willy

    Fast Willy Active Member Established Member

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    Alright guys, I've been taking my time with this project as I want to get it right. Here are a couple pictures I've taken

    This is basically what I started with up close. The system only has approx 2k miles on it over that last 2 years or so. Here you can see the small dimples created by the madrel bender and I was on a mission to remove every bit of this.
    AF9578DE-8560-4344-8367-7382B18FA623_zps7v6fwjj3.jpg

    This was actually my first tool of choice to do this. I couldn't find a flapper wheel like 04sleeper recommends in his how to but this def did the job. the wheel is 80 grit.
    4FEAF692-0E80-4CEE-A65E-CF86934CCEDA_zpsfxqrtqr9.jpg

    And this is what it will look like after the wheel
    C6933AEF-36CB-4BAA-B310-7A5CCBDA4300_zpso1dpvrck.jpg

    From there I went to 100 grit with a DA sander, then 220 and then 400 all using a DA. From there I went to 600 by hand, then 1200 and then 2000.

    Once you get to the 600 grit the pipe starts to have a little shine to it but can still see plenty of sanding marks. I wish I would have taken a few more pictures of each grit but I was just so focused on the project at hand.

    Once reason I went with these grit choices is its basically all I could find at my local lowes believe it or not. Now that I am done with 1 side I wish I would have spent a few more different grits in between my choices. I.E. gone from 600 to 800 to 1000 and then to the 1200 then maybe 1500 to 2000 but over still a very good outcome.

    Here is a picture of the before and after
    41891035-B805-47B8-9D6A-6DBA1E63392E_zpsqchwvtxr.jpg

    One side is now done. Before I move forward I am going to try and located some different grit sand papers. The DA actually I would say saved me on this job for sure but be carefully to always keep it moving. I was able to remove all the dimple and scratch marks from the bending machine. I just didn't personally go crazy with that right around where the hangers are welded on, you don't see this area any ways.

    For polish I used mothers Mag aluminum polish and it seems to work great. I actually paired it with an old buffing pad I has from an old headlight restoration kit that I never used and this worked perfect. Hope you all enjoy. I will post up a few more pictures once I get this back on the car. I am only sparing about an hr a night right now on its and this side probably was around 4 to 5 hours.

    The hardest part to really get right is def the inside area on the bends.
     
    bobbyr51711 likes this.
  13. 1wild-horse

    1wild-horse Relax! I'm a Doctor! Established Member

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    if you have a buffer, you can adapt a cloth polishing wheel to it and speed up the polishing time. The secret to a good shine is the prep work. (sanding)
     

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