Go Back   EcoModder Forum > EcoModding > Motorcycles / Scooters
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 08-09-2019, 06:18 PM   #11 (permalink)
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,092

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,307
Thanked 2,023 Times in 1,380 Posts
Quote:
Originally Posted by Stubby79 View Post
You could also find one for a Geo Metro, which has a similar sized engine, and splice it in.
That's another good idea, a Geo Metro being just a 1 liter engine.

__________________
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.



  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 08-09-2019, 06:53 PM   #12 (permalink)
home of the odd vehicles
 
rmay635703's Avatar
 
Join Date: Jun 2008
Location: Somewhere in WI
Posts: 3,323

Silver - '10 Chevy Cobalt XFE
Thanks: 347
Thanked 661 Times in 494 Posts
Quote:
Originally Posted by California98Civic View Post
That's another good idea, a Geo Metro being just a 1 liter engine.
Itís easier if the pipe diameter is spot on, length can be made up with flex hose
  Reply With Quote
Old 08-09-2019, 07:02 PM   #13 (permalink)
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,092

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,307
Thanked 2,023 Times in 1,380 Posts
Quote:
Originally Posted by rmay635703 View Post
Itís easier if the pipe diameter is spot on, length can be made up with flex hose
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.



  Reply With Quote
Old 08-10-2019, 05:37 AM   #14 (permalink)
EcoModding flying lizard
 
Daschicken's Avatar
 
Join Date: May 2012
Location: Georgia
Posts: 724

Cibbie - '88 Honda CBR 250R
Motorcycle
90 day: 46.74 mpg (US)

Rarity - '06 Honda Accord EX V6
Team Honda
90 day: 35.22 mpg (US)

Baby viff - '86 Honda VFR 400R
Motorcycle
90 day: 42.15 mpg (US)

Latios - '08 Suzuki SV650SF
Motorcycle
90 day: 73.02 mpg (US)
Thanks: 573
Thanked 257 Times in 172 Posts
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.
__________________
-Kaze o tatakaimasen-

Best trip in V6: 52.0
Best tank in V6: 46.0
Best tank in CBR: 61.3
Best tank in VFR: 62.5
Best tank in SV: 83.9

Quote:
Originally Posted by MetroMPG View Post
You can lead a fashion-conscious horse to unusual-looking water...

  Reply With Quote
Old 08-11-2019, 07:11 PM   #15 (permalink)
JSH
AKA - Jason
 
JSH's Avatar
 
Join Date: May 2009
Location: PDX
Posts: 1,552

Adventure Seeker - '04 Chevy Astro - Campervan
90 day: 17.3 mpg (US)

Dieselgate - '14 VW Jetta Sportwagen TDI
90 day: 38.24 mpg (US)
Thanks: 78
Thanked 895 Times in 596 Posts
The stock Honda exhaust already has a catalytic converter.
  Reply With Quote
Old 08-12-2019, 06:14 PM   #16 (permalink)
Master EcoModder
 
Join Date: Feb 2010
Location: Elmira, NY
Posts: 1,709
Thanks: 302
Thanked 320 Times in 267 Posts
It would be more complicated than just bolting on a unit. Check with the dealer tech people about the electronics involved.
  Reply With Quote
Old 08-14-2019, 12:25 AM   #17 (permalink)
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,092

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,307
Thanked 2,023 Times in 1,380 Posts
Quote:
Originally Posted by Grant-53 View Post
It would be more complicated than just bolting on a unit. Check with the dealer tech people about the electronics involved.
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.



  Reply With Quote
Old 08-14-2019, 09:56 PM   #18 (permalink)
EcoModding Apprentice
 
Join Date: Jul 2012
Location: Colorado
Posts: 190
Thanks: 0
Thanked 9 Times in 8 Posts
Quote:
Originally Posted by JSH View Post
The stock Honda exhaust already has a catalytic converter.
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.
  Reply With Quote
Old 08-14-2019, 11:00 PM   #19 (permalink)
Too many cars
 
Gasoline Fumes's Avatar
 
Join Date: Oct 2009
Location: New York State
Posts: 1,348

CRXFi - '88 Honda CRX XFi

Insight 256 - '00 Honda Insight
Team Honda
Gen-1 Insights

Insight 5342 - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 65.78 mpg (US)
Thanks: 839
Thanked 618 Times in 365 Posts
Quote:
Originally Posted by TurnNBurn View Post
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.
Is the catalyst still inside it? A previous owner might've gutted it.
__________________

  Reply With Quote
Old 08-14-2019, 11:39 PM   #20 (permalink)
EcoModding Apprentice
 
Join Date: Jul 2012
Location: Colorado
Posts: 190
Thanks: 0
Thanked 9 Times in 8 Posts
Quote:
Originally Posted by Gasoline Fumes View Post
Is the catalyst still inside it? A previous owner might've gutted it.
It doesn't look touched. All bolts seem to be untampered with

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com