Airbox lid airflow mod

[warmeck]

so i am wondering what size drill bit i have to use to drill a circle in the airbox lid to increase the airflow? also if i do this what else would i have to do to accommodate for it. heres some pics!

also if you could show me in paint where i would drill the wholes im thinking inbetween the squares?

 

[JBRoc01blaster]

I would buy the uni lid vents, there only $10 for 6 vents and that way you won't have to clean the air filter any more than normal !

 

[warmeck]

I would buy the uni lid vents, there only $10 for 6 vents and that way you won't have to clean the air filter any more than normal !

the vents basically cover the wholes right?

 

[79 bronco]

This is what i did to my lid back when i was using the stock air box. It still was not enough air for my motor!





I recommend something like this >>> Outerwears Airbox Cover Red 20 1024 03 Yamaha YFS200 Blaster 88 02 | eBay

DON'T forget about rejetting your carb!

 

[warmeck]

This is what i did to my lid back when i was using the stock air box. It still was not enough air for my motor!





I recommend something like this >>> Outerwears Airbox Cover Red 20 1024 03 Yamaha YFS200 Blaster 88 02 | eBay

DON'T forget about rejetting your carb!

thanks yeah i can see thats a lot of holes and you said barely any increase in airflow so i might not be interested in doing this now lol having second thoughts

 

[mud runner]

you could just take the lid off

 

[JBRoc01blaster]

Those outerwears covers are nice, they allow virtually the same amount of air flow as removing the lid but offer filtration. The only thing that scares me with those are their ability to filter water ... I know they're water RESISTANT but with the riding I do in mud, puddles and creeks I would almost guarantee dangerous amounts of water would make its way into my motor. The Uni vents have removable filters that can be oiled, and I use Maxima FFT which is dust and water PROOF. Before you purchase the outerwears I would strongly consider your style of riding and make sure that is the route you want to go !

 

[Blaaster]

If you take the lid off you need to increase the main jet by two sizes.

 

[phragle]

If you take the lid off you need to increase the main jet by two sizes.

Provided it was jetted right in the first place. Unless you are comfortable with jetting, do not touch your airbox lid. If you do you will more than likely be here in 3 days posting "help, my blaster blew up and I don't know why, can I fix it for less than $5.00"

 

[tyami87]

ok ik this thread is old but for all u guys why would u cut drill holes in the airbox lid why not drill the holes in the bottom of airbox thers already 1 hole in the bottom to drain any water that may make its way into the airbox

 

[Larry's Shee]

ok ik this thread is old but for all u guys why would u cut drill holes in the airbox lid why not drill the holes in the bottom of airbox thers already 1 hole in the bottom to drain any water that may make its way into the airbox

Because there's supposed to be a valve on the hole you squeeze to let water out. Top area is somewhat protected by the seat. Most save the money for the vents and just remove the lid. Either way you must re-jet. More air=more fuel