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Catalytic Coverters by 2008...Bummer

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Old 12-15-2005, 08:52 AM
  #11
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Wink Re: Catalytic Coverters by 2008...Bummer

Quote:
Originally Posted by Airpacker
A typical oxidizing catalytic convertor needs to reach 600 degrees F to start functioning. Its basically a chemical furnace. The fact that most marine engines run at 12 to 1 a/f ratio will also be a huge problem to overcome with a cat. Cats like 14.7 to 15.2 to 1 to function properly. At 12 to 1, the life expectancy of the cat would be somewhere between short and none.
Absolutely correct. Can you imagine how many oxygen sensors we'd go through with an A/F mixture THAT rich?
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Old 12-15-2005, 11:14 AM
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Default Re: Catalytic Coverters by 2008...Bummer

I cannot go into detail, but actually some cats are working quite well.
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Old 12-15-2005, 11:21 AM
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Default Re: Catalytic Coverters by 2008...Bummer

Quote:
Originally Posted by Back4More
Was reading about the EPA and CARB pushing the 5-gm HC=NCx Standard to be in place by 2008.
This means Catalytic Coveters for marine inboard and stern-drive engines...but at the next meeting considerations are being made to exempt engines over 500hp. I'm sure the CARB Board of directors will include all marine engines regaurdless the amount of power.
Better buy that big power boat before 08.
Tough to enforce and easy to by-pass...

I mean they sell catalytic by-pass pipes for cars that look like converters what do you think I would do for my boat! This is the set up on the car...
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Last edited by GLH; 12-15-2005 at 11:23 AM.
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Old 12-15-2005, 12:13 PM
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Default Re: Catalytic Coverters by 2008...Bummer

Some of the new PWC's have some form of catalytic system. I think the Honda PWC has it.
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Old 12-15-2005, 04:54 PM
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Default Re: Catalytic Coverters by 2008...Bummer

i think yams have them on there outboard motors or were trying them out at one time .
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Old 12-15-2005, 04:57 PM
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Default Re: Catalytic Coverters by 2008...Bummer

My 2000 Yammy gp1200r had a cat converter on it...... till I ripped it out.....
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Old 12-15-2005, 06:15 PM
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Default Re: Catalytic Coverters by 2008...Bummer

I believe the argument by the EPA was that if we mandate it, then the technology will exist. Kinda like Cali requiring electric cars.
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Old 12-15-2005, 10:51 PM
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Default Re: Catalytic Coverters by 2008...Bummer

some body drop a bomb on the epa and carb please !
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Old 01-15-2008, 08:20 PM
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Does anyone have more details on this? Someone must have photos. Talk at the boat show yesterday was that it is coming next year and will involve redesigned exhaust manifolds followed by water cooled catalytic converters and then likely into through prop exhaust.
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Old 01-15-2008, 08:53 PM
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A form of catalytic convertor has been on 2 cycle equipment for the past 2-3 years and has not created too many problems. Most people do not even know it is there.
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