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Discussion Starter #1
Hey guys, I did the flapper mod and wasn't able to spend the cash to purchase one of those sharper looking covers that bolts onto the snorkel so I went to Lowes and for $1.50 picked this cover up and put it on. Let me know what you think.

Sorry if the picture isn't very good. But you can get them in Chrome or black.

They are crazy light and sit almost flush on the housing.
 

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Discussion Starter #3
It's a Hole Plug. Size is 1 3/8. I found it on the nuts and bolts aisle. The part # is 139432. All I did was press all the tabs done except for two the were directly across from each other and I kind of bent those out just a little. Than I worked the two tabs into the slots that the previous tabs would be inserted into and turned it. I figured if it stays it looks great and if it happens to fly off I'm out a $1.50. But it feels pretty snug in there.

Here's a picture of the plug.
 

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looks great... for $1.50 you can put a new one in every six months if anything
 

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Discussion Starter #7
Haha, I like the duc tape but I do believe that may set you back more than $1.50 if you have to buy a roll. But well done.
 

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I don't know, that duct tape is not the run of the mill silver...:D

Nice mod advice. You know that once you display this idea you are responsible for the durability test report;)
 

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On my bike the previous owner cut the vaccum hose and I can see the flapper is open, is the best way to modify the flapper to just completely remove the whole actuator and cap it off?
 

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Air tight?

Shouldn't this be air-tight?
I would think this contraption cap at high speed while you shut the throttle off too much pressure may send it up to your face.

Maybe if you can find an o-ring for it to seat on and then drill and attach the valve's spring/blade on to secure it?

Maybe even stick a little digital clock on it and cover the bolt head :)
 

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Discussion Starter #12
Maybe you can dab some super glue underneath it but last night I was riding at speeds over a 100 and that little guy stayed put.



Has anyone else tried this? I'm just curious. I love it but I may be a little bias.
 

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After all this talk, how can I tell if the previous owner did this ? The cover on my bikes looks a bit suspect to me...is there a way without tearing down the bike to find out ? Would pictures help ?
 

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After all this talk, how can I tell if the previous owner did this ? The cover on my bikes looks a bit suspect to me...is there a way without tearing down the bike to find out ? Would pictures help ?
Do you know about this site, http://www.rc51.org/

then go here http://www.rc51.org/valve.htm

I did the mod recently, it's pretty easy, and after reading thru that, you'll be able to tell if it's been done or not.
 

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ZeroGara got a good point. i think of the fact that you're not re-using the factory spring thingy that holds the cap securly to the airbox. it's gotta be a lot stronger than the two tabs you're relying on to hold it in place under an extreme condition. not critisizing, just saying...
 

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After all this talk, how can I tell if the previous owner did this ? The cover on my bikes looks a bit suspect to me...is there a way without tearing down the bike to find out ? Would pictures help ?
Look up the snorkel. If you see the flapper in there then it hasn't been done.
 

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Look up the snorkel. If you see the flapper in there then it hasn't been done.
Well, technically, just because you can see the flapper doesn't mean its functional. All you have to do is disconnect the vacuum hose on the cap of the airbox. That will disable the flapper. That would be a lazy way, but could be done.

It's all explained in detail on the link i included earlier
 

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Thanks Sub / Rob and Jon, I will take a good look this weekend.
 

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I think the ram-air effect is slightly higher pressure at high speed, just enough so you do not have lack of air in the airbox and even then I think at top end max speed WFO throttle the pressure is less than 1atm. When you shut the throttle off at high speed air accumulates and pressure builds at about 1.1-1.15atm = 1.5-2psi, not much. Without the ram air it may drop down to 0.7atm.
So any leak at that point where the snorkel is will disable the ram-air. It doesn't have to pop-off to leak.
 
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