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General Category >> Rubber Side Down! >> Air box delete mod
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Message started by Lucaisrussell on 01/15/13 at 08:10:34

Title: Air box delete mod
Post by Lucaisrussell on 01/15/13 at 08:10:34

Hey everyone! So one of the first mods I did to my bike was take off that big ugly air box and threw a little air filter on the carb. It was a long arduous task to get it tuned correctly (did it myself, no help, by trial and error) but, I've got it to where I'm happy with the way it performs. For the rest of you that have done this mod, I was wondering about what you've done with all the lines that run into the carb. I'll post a few pictures of what mine looks like and what's achually done incase anyone else is interested in doing something similar. Also my bike was a cali model and I used to have a charcoal canister.
1. White spacer mod( I just used some sand paper and shaved half off my stock yellow spacer)
2. Main jet 145 not sure on the secondary but I think it's a 55.
3. Emgro air filter from bike bandit $15
4. Exhaust is pretty much strait pipe besides a home made baffle.
5. You can see what I did with the hoses in the pictures but the vaccum to the pet thingy is hooked up, I've got the emissions and 1 float bowl breather capped off, one float bowl breather open.

I couldn't find any write up on the Internet about how to do this and it was a pain in the butt for me to figure it all out so if you'd like I could do a step by step write up with pictures on how to do this mod.

Title: Re: Air box delete mod
Post by Lucaisrussell on 01/15/13 at 08:13:16

In this picture you can see where I didn't plug it up. If I do the bike won't run, I'm not sure why but if you know please tell me

Title: Re: Air box delete mod
Post by Lucaisrussell on 01/15/13 at 08:14:49

One last picture of the overall bike

Title: Re: Air box delete mod
Post by justin_o_guy2 on 01/15/13 at 08:20:47

Someone discovered that there are some pod filters that cover a port cast into the carb. If yours wont run with that vacuum line plugged, somethin aint right,,
Id pull the air filter mount off the carb & study it, compare it to the tube that went to the air box. Look to see if it covers anything the original tube didnt. It otta not require that vac line be open. It wasnt before. The vacuum just went to a diaphragm & sucked it back. It didnt leak vacuum,it didnt suck air thru that tube before like it does now. It was, for all intents & purposes, blocked off, before you pulled the air box.

Title: Re: Air box delete mod
Post by thumperclone on 01/15/13 at 08:24:50

is that the bowl vent youre trying to plug up??

Title: Re: Air box delete mod
Post by Lucaisrussell on 01/15/13 at 08:38:44

Yes, I've got two bowl vents, one plugged up one open. I don't see why having both vents plugged up would matter but it does. I've inspected the carb many times and I heard that there might be some sort of check valve system in the air box but I don't know. She'd some light on this for me.

Title: Re: Air box delete mod
Post by verslagen1 on 01/15/13 at 08:53:13

61584E4C445E5F585E5E4841412D0 wrote:

If you got the vents plugged up, the gas can't fill up the bowl and air can't clear out of the line and gas can't flow into the intake as designed.
I'd put back both vents and run the vent lines like stock.
They tuck up into the backbone, in a tip over, gas will go into the frame.
no check valve in the air box.

Title: Re: Air box delete mod
Post by justin_o_guy2 on 01/15/13 at 08:59:33

Dooooh! Thats a Bowl Vent,,?? Daaaangitt,,,

Did I mention Ive been sick? Im avoiding doing anything that requires decisions/thinking,, Need to put a switch in the water filter system, I was Thinking Id do it today,, but after that little stunt, I may just pass,,

Title: Re: Air box delete mod
Post by Lucaisrussell on 01/15/13 at 09:53:56

Thanks verslagen1, that makes more scents. But of course before I ever got this bike running, I took the air box and charcoal canister out then rebuilt the motor so I'm not sure how the stock lines would have vent. Are you saying just stick some hose on there incase of a tip over for fuel to leak out in a different spot?

Title: Re: Air box delete mod
Post by verslagen1 on 01/15/13 at 11:35:14

1F2630323A2021262020363F3F530 wrote:

The lines are about 6" long and stick in the frame above the carb.
Added bene is the float sticks it doesn't flood out the top as bad.