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Is it good to remove catalytic converters?

Discussion in 'VE Holden Commodore (2006 - 2013)' started by Hussien, Nov 15, 2013.

  1. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    How long do cats last? What happens when they fail?
     
  2. Pollushon

    Pollushon Boost gives me a bar....

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    About 5k after the blower goes on then sounding like marbles in a jar :)
     
  3. AirStrike

    AirStrike Administrator Staff Member

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    What happens when they fail, you buy new ones.
     
  4. one_and_only2004

    one_and_only2004 Turbo L98 FTW

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  5. maxthedralf

    maxthedralf New Member

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    quick note. if you want to gut your cats. pan all the crap thats inside them. its full of gold dust. :p
     
  6. AirStrike

    AirStrike Administrator Staff Member

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    They contain platinum, palladium and rhodium. If you could be assed sorting it all there is about $20 worth.
    No gold.
     
  7. Pollushon

    Pollushon Boost gives me a bar....

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    There's a bloke on FleaBay who states his cats contain Plutonium. I'm assuming he's confused that with Platinum, well, I hope so, or I'm sorry in advance Eastern Seaboard, weez goin kritikal.
     
  8. maxthedralf

    maxthedralf New Member

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    taken from wiki..
    Because of the external location and the use of valuable precious metals including platinum, palladium, rhodium, and gold, converters are a target for thieves
     
  9. Tasmaniak

    Tasmaniak Not a valid input....

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    Theres your problem there... a commumity based encyclopedia. There is a reason wikipedia is not a valid resource is the research field of amything.

    There is no Au in a catalytic convertor. The only thing gold can be a catalyst for is arguments between my wife and i as it converts our bank account into tiny digits.
     
  10. maxthedralf

    maxthedralf New Member

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    ok. let me take an extract from howstuffworks..

    In the catalytic converter, there are two different types of catalyst at work, a reduction catalyst and an oxidation catalyst. Both types consist of a ceramic structure coated with a metal catalyst, usually platinum, rhodium and/or palladium. The idea is to create a structure that exposes the maximum surface area of catalyst to the exhaust stream, while also minimizing the amount of catalyst required, as the materials are extremely expensive. Some of the newest converters have even started to use gold mixed with the more traditional catalysts. Gold is cheaper than the other materials and could increase oxidation#, the chemical reaction that reduces pollutants, by up to 40 percent

    -_- sigh.
     
  11. Tasmaniak

    Tasmaniak Not a valid input....

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    Lets not forget that Au melts at just over 1000c (dont remember exactly, besides it depends on its purety) so the first time you lean out your engine... the gold would pool at the bottom!
     
  12. maxthedralf

    maxthedralf New Member

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    ffs. its not 24k gold. it would be an alloy.. titanium also melts at 1000 but they still use it in cats to. also. let me tell you something. most exhaust manifolds are made from ether cast iron or stainless. guess what the melting point of cast iron is. here is a hint.
    Since the compositions of most cast irons are around the eutectic point of the iron–carbon system, the melting temperatures closely correlate, usually ranging from 1,150 to 1,200 °C (2,102 to 2,192 °F), which is about 300 °C (572 °F) lower than the melting point of pure iron.

    if you can melt the gold in a cat. id have greater worries on my mind. -_-
     
  13. bosmonaut

    bosmonaut New Member

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    VE's will have an engine light come on straight away with hollowed out cats as they have 02 sensors both sides of the cat (4 in total) they are mapped from factory to recognize the presence of a cat and are adjusted accordingly. if you remove them your check engine light will be on all the time and the ESP will be permanently off. Unless you have it tuned and re calibrated and very few mechanics will do the tune cause its illegal for a road car. Just put hi flows in its a heap less hassle.
     
  14. Tasmaniak

    Tasmaniak Not a valid input....

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    I would've been quite happy to have this discussion with you and concede I was wrong... until you let your ####wit slip through with that statement.

    "Let me tell you something".... you can bash your knob as much as you want now mate. You're a ####wit that can't handle a debate without "telling someone something" or a "ffs" and the only thing your telling something to now is a brickwall.
     
  15. AirStrike

    AirStrike Administrator Staff Member

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    Oooo Mr Max knows how to google.
    Maybe do some more gooooogling on your favorite wiki, titanium melts at like 1600.
     
  16. phillmac

    phillmac New Member

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    But it all must be true as he learned it from the iternet
     
  17. Pollushon

    Pollushon Boost gives me a bar....

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    Don't get me started on Adamantium and Unobtanium.
     
  18. phillmac

    phillmac New Member

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    Seen a melted modern Ducati that was started by the cats heat. Another owner posted photo's of mufflers inners glowing bright red. Have not searched what temp the bikes melt at but my std pipes will stay in shed unless defected.
     
  19. ari666

    ari666 250,000 hits

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  20. ari666

    ari666 250,000 hits

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    so the size of the waffle inside the cat makes no difference to the melting point? no, i guess not youre probably right. a 5mm cast iron manifold would surely melt at the same time as a 20 micron waffle of ceramic/platinum composite.

    p.s. aussie cats do not contain gold. this is coming from the guy who used to buy and recycle my cats.
     

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