08-09-2019, 07:18 PM
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#11 (permalink)
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Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
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Quote:
Originally Posted by Stubby79
You could also find one for a Geo Metro, which has a similar sized engine, and splice it in.
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That's another good idea, a Geo Metro being just a 1 liter engine.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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08-09-2019, 07:53 PM
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#12 (permalink)
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home of the odd vehicles
Join Date: Jun 2008
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Quote:
Originally Posted by California98Civic
That's another good idea, a Geo Metro being just a 1 liter engine.
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It’s easier if the pipe diameter is spot on, length can be made up with flex hose |
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08-09-2019, 08:02 PM
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#13 (permalink)
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Cyborg ECU
Join Date: Mar 2011
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Quote:
Originally Posted by rmay635703
It’s easier if the pipe diameter is spot on, length can be made up with flex hose
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Agreed, also it introduces a restriction on the flow that probably changes the exhause tune more radically than just introducing the honeycomb. If it undermines scavenging, then the CAT would possibly go part way to undermining the environmental and health benefits of emissions control, since the vehicle might become less efficient, no?
To be clear: I think adding the CAT is a good idea, for environment and health, in LV and in general. Less pollution is the better practice.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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08-10-2019, 06:37 AM
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#14 (permalink)
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EcoModding flying lizard
Join Date: May 2012
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Make sure you don’t already have one first. The VFR 800 got a cat in 2001(or 2000), SV650s got them somewhere around 2003-2006. It could be built into the stock muffler, the SVs’ are.
And to tell if a cat is working, measure pipe temperature before and after the cat. If the temperature goes up, the cat is working.
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Best trip in V6: 52.0
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Quote:
Originally Posted by MetroMPG
You can lead a fashion-conscious horse to unusual-looking water...
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08-11-2019, 08:11 PM
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#15 (permalink)
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AKA - Jason
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The stock Honda exhaust already has a catalytic converter.
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08-12-2019, 07:14 PM
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#16 (permalink)
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Master EcoModder
Join Date: Feb 2010
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It would be more complicated than just bolting on a unit. Check with the dealer tech people about the electronics involved.
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08-14-2019, 01:25 AM
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#17 (permalink)
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Cyborg ECU
Join Date: Mar 2011
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Quote:
Originally Posted by Grant-53
It would be more complicated than just bolting on a unit. Check with the dealer tech people about the electronics involved.
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I think it would be easier to just strap a cat onto the bike, like this? ... https://www.telegraph.co.uk/content/...pg?imwidth=450
Might be better as a horn?
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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08-14-2019, 10:56 PM
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#18 (permalink)
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EcoModding Apprentice
Join Date: Jul 2012
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Quote:
Originally Posted by JSH
The stock Honda exhaust already has a catalytic converter.
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I looked on my exhaust and what I thought was a "resonator" is indeed a cat. Sure doesn't seem like it's doing its job. My backpack and I stink after a ride. |
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08-15-2019, 12:00 AM
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#19 (permalink)
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Too many cars
Join Date: Oct 2009
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Quote:
Originally Posted by TurnNBurn
I looked on my exhaust and what I thought was a "resonator" is indeed a cat. Sure doesn't seem like it's doing its job. My backpack and I stink after a ride.
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Is the catalyst still inside it? A previous owner might've gutted it.
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2000 Honda Insight
2000 Honda Insight
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1988 Honda CRXFi
1994 Geo Metro
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08-15-2019, 12:39 AM
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#20 (permalink)
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EcoModding Apprentice
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Quote:
Originally Posted by Gasoline Fumes
Is the catalyst still inside it? A previous owner might've gutted it.
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It doesn't look touched. All bolts seem to be untampered with
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