Build a Better Mouse Trap
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Club Member
Joined: Sep 2009
Posts: 2,290
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I'm seeing where the 2010 Yamaha models do have Cats, 3 way honey comb type what ever that means.
Will hit the Yamaha forums to see if they are having problems or into dumping CATS before posting again! Someone needs to check the 2010 Honda and 2010 Kaw's just to double check. I knew the standard was for 2010 and and assumed it would be for all motorcycles imported or manufactured in the U.S.
Should have got some more info before posting but still some interesting post!
Will hit the Yamaha forums to see if they are having problems or into dumping CATS before posting again! Someone needs to check the 2010 Honda and 2010 Kaw's just to double check. I knew the standard was for 2010 and and assumed it would be for all motorcycles imported or manufactured in the U.S.
Should have got some more info before posting but still some interesting post!
Advanced
Joined: Aug 2009
Posts: 54
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From: Phoenix AZ
I believe S&S is manufacturing EPA emissions certified engines.
http://www.sscycle.com/modules/catal...&z_catalog=%3D
http://www.sscycle.com/modules/catal...&z_catalog=%3D
Elite HDF Member
Joined: Nov 2009
Posts: 3,886
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On the 2010 Dynas, such as my Super Glide, the cats are in the mufflers. The big touring bikes have the cats in the headers. The cats aren't the only things supposedly causing the alleged heat problem....the fuel to air mixture is also much leaner to meet the EPA standards...which results in a much hotter engine. Is it a big deal? I don't know.
Road Warrior
Joined: Jul 2008
Posts: 1,286
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From: Arizona
Consistent combustion chamber temperature regulation is the best way to control emissions....read that as water cooled. The last air cooled VW Beetle sold in the US was in 1979, and is was equipped with a catalytic converter. They do not sell air cooled vehicles in this country any longer...they are all water cooled....and catalytic converter equipped as well.
Automotive electronics are light years ahead of what motorcycles currently have but it will trickle down, because the auto makers have to meet more stringent emission requirements sooner than the motorcyle manufacturers have to. Some cars are using electronic controlled thermostats to more consistently control engine temperature, and respond to changes in engine temperature quicker. New cars require little to no warm up time compared to older cars. Cold engines require richer mixtures, this is the period when emissions are highest....today's heated O2 sensors are online as soon as the engine is started to reduce warmup emissions.
Tech23
Automotive electronics are light years ahead of what motorcycles currently have but it will trickle down, because the auto makers have to meet more stringent emission requirements sooner than the motorcyle manufacturers have to. Some cars are using electronic controlled thermostats to more consistently control engine temperature, and respond to changes in engine temperature quicker. New cars require little to no warm up time compared to older cars. Cold engines require richer mixtures, this is the period when emissions are highest....today's heated O2 sensors are online as soon as the engine is started to reduce warmup emissions.
Tech23
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Club Member
Joined: Sep 2009
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2010 Cats
It seems the Kaw touring is having a heat problem, they are advertising pipe covers and mid frame heat deflectors to keep the heat off the riders leg!
I can't believe the big air cooled Yamaha touring is still carbureted! We lost the carbureter option with Harley after 06. They claim some kind of 3 way cat, honey comb style construction but there is no way they are meeting the 2010 standard carbureted.
I check my plugs on the 2010 and they are chalk white, so are the 02 sensors. I know that engine is lean and the ECM controlled EFI has it at 14.6 in the closed loop idle to 4000 RPM Range. I don't believe Yamaha is meeting that standard with the carb but if they are I don't see why Harley did not give us our carb option.
It is a really easy fix to drop a cat and richin up the AFR with a Carbureted bike. The richer AFR does give you some cooling plus dropping the CAT. Harley added the EITMS "Electronic Idle Temperature Management System" it kicks in at 285 deg F. a clear admission the engine's are running hot. Yet people come on here and will tell you the big baggers are not running hotter than normal.
It is about extended engine life as much as anything else. Harley needs to come up with some other method of meeting those standards other than a Cat. Or give us our carb option back!
I can't believe the big air cooled Yamaha touring is still carbureted! We lost the carbureter option with Harley after 06. They claim some kind of 3 way cat, honey comb style construction but there is no way they are meeting the 2010 standard carbureted.
I check my plugs on the 2010 and they are chalk white, so are the 02 sensors. I know that engine is lean and the ECM controlled EFI has it at 14.6 in the closed loop idle to 4000 RPM Range. I don't believe Yamaha is meeting that standard with the carb but if they are I don't see why Harley did not give us our carb option.
It is a really easy fix to drop a cat and richin up the AFR with a Carbureted bike. The richer AFR does give you some cooling plus dropping the CAT. Harley added the EITMS "Electronic Idle Temperature Management System" it kicks in at 285 deg F. a clear admission the engine's are running hot. Yet people come on here and will tell you the big baggers are not running hotter than normal.
It is about extended engine life as much as anything else. Harley needs to come up with some other method of meeting those standards other than a Cat. Or give us our carb option back!
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Club Member
Joined: Sep 2009
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The Truck is Water Cooled
We have no problems with cats on our water cooled engine! On air cooled engines they hold in heat, especially on air cooled engines that are already running hot from a lean AFR.
On a Harley they also kill the signature sound and power! You take the Cat off a Harley and richinup the AFR you get a little more low end power and get some cooling benefit.
The CATS on the Harley Engine design is an engine killer! The EITMS is just a bandaid to get you through the warranty period. I can't see any kind of extended engine life with an engine running this hot.
If Harley can dump the cat and still meet Emission standards they will increase sales in tough economic times, they need to work on this.
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Road Master
Joined: Jul 2008
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Type 113-cubic-inch (1854cc) air-cooled 48° V-twin; pushrod OHV, 4 valves/cylinder
Bore x Stroke 100mm x 118mm
Compression Ratio 9.48:1
Fuel Delivery Twin-Bore electronic fuel injection;throttle position sensor
Ignition TCI: Transistor Controlled Ignition
Transmission 5-speed; multiplate wet clutch
Final Drive Belt