Catalytic converter’s

[RB28]

Does a 2019 242 Limited have Them

 

[jEt_jAk]

I don’t think any of them do as far as I know. I believe Rotax does though.

 

[Weeb]

I think my California 4 star engines have them.

 

[jEt_jAk]

You might be right on that.

 

[Ratket]

God damn Comufornia....

 

[swatski]

Huh!
I would have loved to have the catalytic converter in mine, now that we do a ton of wake surfing!
Catalytic converters very effectively remove CO from exhaust oxidizing it to carbon dioxide - CO is the shit that will kill you when wake surfing (without fresh air exhaust - like in our boats), but even when sitting on the swim platform while running it is a risk.

CATS have nothing to do with greenhouse gasses/global warming, btw, they do not reduce emissions of carbon dioxide (CO2).

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[Ratket]

Carbon Monoxide is no joke.

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We may cruise through every now and then when it’s quiet, but it’s usually crowded so we avoid it.

 

[biffdotorg]

Not to hijack this thread too much, but what is the difference in the ribbon, and a true cat? I think that is where the confusion comes from.

When I had the ribbon disintegrate years ago in a Yamaha GP1200r, my Yamaha dealer told me the catalyst failed. I could replace it for hundreds of dollars, (Currently over $1100 on the GP1300r) or do the D-plate. As 90% of GP owners eliminate the catalyst and put in a D-plate.

The reason I ask, is I did this on one of our two GP1300R's as well a couple years ago, and Yamaha still refers to it as a Catalyst Assembly. Or is this just as close to a Cat gets on a 2-stroke. As it looks identical to the ribbon in our 4-stroke boats.

I was thinking the primary purpose of the ribbon was being a spark arrestor.

Thanks for any education you can give me.

 

[Weeb]

A catalytic converter is on the exhaust to burn unburned fuel

 

[haknslash]

Ribbon is in the intake and acts as a spark arrestor.

Cats are on exhaust side. Catalytic converters aren’t to burn unused fuel but rather use unburned fuel and raw exhaust gases CO and turns the gases into CO2 and water for cleaner emissions.

 

[biffdotorg]

That's the part I didn't get. Thank you. And makes complete sense, as sparks going out an underwater exhaust is just sillyness. HA

 

[swatski]

Catalytic converters aren’t to burn unused fuel but rather use unburned fuel and raw exhaust gases CO and turns the gases into CO2 and water for cleaner emissions.

Well, Cats do burn unburned fuel - hydrocarbons, by oxidizing those along with CO to produce CO2 and water. That comes in handy in YJBs running "rich" from factory, I would think. Cats also reduce reactive nitrogen oxides, those are super toxic.
It's hard to find a negative albeit there is increased complexity and some power loss.

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[Spooling]

If anyone's interested in trying to add a catalytic. These are probably a good option.

Products - G-Sport by GESi - Catalytic Converter Parts and Accessories

 

[swatski]

If anyone's interested in trying to add a catalytic. These are probably a good option.

Products - G-Sport by GESi - Catalytic Converter Parts and Accessories

That is an interesting idea. I’m considering some version of FAE or fresh air exhaust(?) piping for our surfing needs.

I do not like turning the engines off when fully ballasted and listed, which of course exaggerates the exhaust issue between sessions/switching surfers.

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