what will it take, bike rinning with no airbox?

[metalhed87v]

Got a busted 87 that I am gonna turn into a chopper. What will it take to have the bike run well with no airbox at all? The mods to the frame are not going to allow for the airbox to be used.

[bongobobny]

Hmmm, maybe 4 small air cleaners, or some fancy side ductwork to some airboxes like on a 2nd gen??

[twigg]

Got a busted 87 that I am gonna turn into a chopper. What will it take to have the bike run well with no airbox at all? The mods to the frame are not going to allow for the airbox to be used.

 

Four Pod filters (K&N) or similar, and a dyno session to get the jetting right.

 

It will still never run as smoothly as stock, but it will run well enough to be fine. This is because the airbox is not simply a box to hold the filter, it affects the airflow too.

 

You won't be too bothered by that and the pods and jetting (whiich may involve a larger main, check that first) shouldn't be too hard to work out.

[painterman67]

http://www.kloppenberg.us/chopper.html

 

this guy say what he did works. scroll down throught he pics.

 

David

 

http://www.cruisercustomizing.com/baron-custom-accessories-big-air-carb-kit-royal-star/part/BA-2000-00

 

this is for a royal star but something like this might work.............Ive seen pics but can find them where someone installed something similar on a 1st gen.

Edited February 19, 2012 by painterman67

[GaryZ]

Got a busted 87 that I am gonna turn into a chopper. What will it take to have the bike run well with no airbox at all? The mods to the frame are not going to allow for the airbox to be used.

 

The jetting is way too lean with the airbox removed. You might be able to put spacers on the main jets and get enough fuel . . . I would give it a try. What have you got to lose?

 

[Carbon_One]

Deffineately you're going to have to upgrade pilots and main jets and maybe even change needle height. Do the jets first and go from there.

Larry

[mmaleney]

Be sure to post a photo of your build, am sure someone will be able to come up with a way to get it worked out.

[reddevilmedic]

http://www.ebay.com/itm/Improve-MPG-4-Air-Filters-breather-Vmax-1200-V-max-Venture-1200-Yamaha-Save-/150763356803?pt=Motorcycles_Parts_Accessories&hash=item231a324283. i saw this on ebay.

[twigg]

http://www.ebay.com/itm/Improve-MPG-4-Air-Filters-breather-Vmax-1200-V-max-Venture-1200-Yamaha-Save-/150763356803?pt=Motorcycles_Parts_Accessories&hash=item231a324283. i saw this on ebay.

 

Ignore everything that ad says about re-jetting

[mmaleney]

Zagger may be able to help you he has a black chopper he put together no air box just K an N stacks he been runnin it down the road now for bout five years now

[jasonm.]

The jetting is way too lean with the airbox removed. You might be able to put spacers on the main jets and get enough fuel . . . I would give it a try. What have you got to lose?

 

"spacers on the main jets"...say what? I think you mean spacers on the main jet needles...Also the pilot screws will need to be turned out quite a bit...total 3 to 4 ccw