[boduc]

Stupid question. I have done this on other bikes before, but for the life of me I can't remember what to do with the breather hose from the tank. The two vacuum hoses that connect to the intake manifold would just be plugged up.
Any one here done it to the 1098?

 

[vinman]

I did, there are two hoses side by side coming from the gas tank. One that goes to the charcoal canister and one that just routes down to the bottom of the bike. I used a y hose connector and simply connected both boses coming from the tank to the one hose routed to the bottom of the bike. The service manual has a clear picture of it. PM me your email and I'll forward you a picture of it.

 

[boduc]

Oh ok cool, that make sense. Thanks!

 

[lee]

What is the benefit of removing the cannister?

 

[Yossarian]

1. You're not hauling it around with you (less weight).
2. You eliminate a vacuum leak in the throttle bodies.

 

[vinman]

not much of a weight savings (3.2 lbs) but it helps. and yeah, you plug up the vacuums on the throttle bodies which should help.

 

[lemmy999]

1. You're not hauling it around with you (less weight).
2. You eliminate a vacuum leak in the throttle bodies.

3. You get to make Al Gore angry

 

[CAG]

3. You get to make Al Gore angry

 

[Oldracer27]

3. You get to make Al Gore angry

Maybe his son was in a hurry to get daddy his weed ...... :friday:

 

[Visitor Q]

How about a write up on how to do this?

Thanks.
Jason

 

[Visitor Q]

1. You're not hauling it around with you (less weight).
2. You eliminate a vacuum leak in the throttle bodies.

Can you explain more on number "2"? What does eliminating a vacuum leak in the throttle bodies do?

Thanks.
Jason

 

[Smeegle]

I'm interested to see where this post goes too...what's the purpose for the canisiter in the first place? Environmental stuff?

 

[Visitor Q]

Yes, more info. please.

Jason

 

[Yossarian]

The canister has charcoal in it. Its purpose is to absorb gasoline vapors which originate in the tank. These are vented via a line to the charcoal canister. A second vent line from the canister leads to the atmosphere in case the charcoal becomes saturated. During engine operation, the vacuum in the throttle bodies draws some air through the small lines attached to the charcoal canister. As the air flows, it causes some of the gasoline that's trapped in the charcoal to vaporize and thus it gets pulled into the throttle bodies and burned in the engine. The whole system is meant as a means of controlling unwanted gasoline vapors that occur when the bike is not operating.

It's not a lot of flow into the throttle bodies, and it's not necessarily at the correct mixture level. If the charcoal is "dry", all you are doing is pulling extra air into the throttle bodies. By blocking off those lines or entry ports you are eliminating the vacuum leaks, and only air that's been through the air filter, along with the correct mixture of gasoline from the injectors, is getting into the engine.

 

[Visitor Q]

The canister has charcoal in it. Its purpose is to absorb gasoline vapors which originate in the tank. These are vented via a line to the charcoal canister. A second vent line from the canister leads to the atmosphere in case the charcoal becomes saturated. During engine operation, the vacuum in the throttle bodies draws some air through the small lines attached to the charcoal canister. As the air flows, it causes some of the gasoline that's trapped in the charcoal to vaporize and thus it gets pulled into the throttle bodies and burned in the engine. The whole system is meant as a means of controlling unwanted gasoline vapors that occur when the bike is not operating.

It's not a lot of flow into the throttle bodies, and it's not necessarily at the correct mixture level. If the charcoal is "dry", all you are doing is pulling extra air into the throttle bodies. By blocking off those lines or entry ports you are eliminating the vacuum leaks, and only air that's been through the air filter, along with the correct mixture of gasoline from the injectors, is getting into the engine.

Will any of this cause the bike to run better or worst?

Do you know what page of the service manual has this information?

Jason

 

[Yossarian]

My service manual lists the torque specs for the bolts but I am not seeing any info regarding the canister itself. The canister is on US-spec bikes, not sure about the rest of the world.

Removing it will not cause the bike to run worse; if anything, it'll run better.

 

[Visitor Q]

My service manual lists the torque specs for the bolts but I am not seeing any info regarding the canister itself. The canister is on US-spec bikes, not sure about the rest of the world.

Removing it will not cause the bike to run worse; if anything, it'll run better.

Where is it located on the bike? Can you take a picture of it?

I will make the change to my bike and write up set by set instruction if you can point me in the right direction with it.

Jason

 

[Yossarian]

Pic

Here's a picture:

 

[DucatiGuy]

Jay, the evap/can is located behind the right side (brake side) fairing. You cant miss it. It'll be dead in front of your face. It's a black box approx 6" high and 3" wide. Here's the one I removed from my girls Monster...

Minus the bracket, it should look just like it...

The reason why I removed it from my girls Monster was more for cosmetic reasons, as it was a giant eye sore. On the 1098, you can't see it. As for the claims the bike will run better or you'll gain more power, it's nothing that you'll notice, not even on a dyno. The "extra" gas vapors that it traps are so minuscule, that when introduced back into the TB's, it's impact is very very little (after all, we're talking about a vapor here). Most of it is sucked right in within seconds of start up. IMO, unless you're tracking / racing your bike and need to reduce weight, or don't want to deal it with (in the way for engine work), I would just leave it alone....

 

[mrinflux]

unnecessary removal

As for claims the bike will run better or you'll gain more power, it's nothing that you'll notice, not even on a dyno. IMO, unless you're tracking/racing your bike and need to reduce weight, or don't want to deal with it, (in the way for engine work), I would just leave it alone.

Agreed