Does taking off the airbox cover (over the filter) have an effect?

[blasterdubai]

Hi
I just took the airbox cover off my blaster, and it seems to be more responsive or powerful, something like that anyway. ( K&N filter )
Does taking off the airbox cover (over the filter) have any effect the performance of the blaster?
Please reply
Thanks

 

[Surfrjag]

yes you will usually get a little more response and power out of it because the lid is restrictive and sometimes you will need to rejet the carb. do a plug chop to check.

 

[royalt67]

Hell Yeah! Taking off the lid is like uncorking it. You DEFINITELY need to rejet. Put in a main jet at least two sizes bigger and then check your plug as mentioned above. When properly jetted for no lid, it will instantly foul plugs if you try to put it back on. That's how big of a difference it makes in airflow.

 

[blaster14072]

idk bout that dude my blaster is perfect a lil lean but i have my lid off and i didnt jet it had a stock jett but then i put a dg full pipe on it now idk i had to jet it again but i didnt get mine with outh the lid and it ran fine!!!

 

[sheeblast]

rejet it to gain the most from allowing more air into the engine.

 

[super noober]

idk bout that dude my blaster is perfect a lil lean but i have my lid off and i didnt jet it had a stock jett but then i put a dg full pipe on it now idk i had to jet it again but i didnt get mine with outh the lid and it ran fine!!!

lol well lucky you, the correct thing to do is rejet

 

[royalt67]

rejet it to gain the most from allowing more air into the engine.

Or don't and take a chance on seizing a perfectly good motor......

 

[myusername]

if i remember right, the opening for air in the lid is bigger than the opening into the reed cage, so wouldnt that mean the restriction would be there instead of the lid? i know on my drz, on a stock motor, if you put a 3"x3" square hole in the air box, it gives it more of an increase in power and responsiveness than the stock opening, or anything smaller than that or bigger than that. so i am wondering if it has something to do with the pulses and not restriction

 

[Surfrjag]

i think it does have more to do with pulse velocity going into the reed cage. if you have the lid on it will create more of a vacume in the intake area. chances are you need to rejet. at least put 1 size larger main jet in and see how it does.

 

[royalt67]

if i remember right, the opening for air in the lid is bigger than the opening into the reed cage, so wouldnt that mean the restriction would be there instead of the lid? i know on my drz, on a stock motor, if you put a 3"x3" square hole in the air box, it gives it more of an increase in power and responsiveness than the stock opening, or anything smaller than that or bigger than that. so i am wondering if it has something to do with the pulses and not restriction

Surfrjag:i think it does have more to do with pulse velocity going into the reed cage. if you have the lid on it will create more of a vacume in the intake area. chances are you need to rejet. at least put 1 size larger main jet in and see how it does.
Today 12:42 PM

In general, they ONLY restriction you want in an intake system is the carburetor and maybe the intake manifold (reed cage). The snorkel inlet on the stock airlid is significantly smaller that the cross section of the reed cage. The carb throat might be smaller (depending on carb choice) but the carb is designed to increase velocity through it (venturi effect) which negates that restriction to a certain degree.

The stock airlid sucks. Outerwears rock.

 

[blaster14072]

yeh dude idk i have seen many with it like that without the airbox lid and not pissed with and they runn good i didnt get it until i got a pipe reeds and a kandn so im not saying anything but i think youll be fine to take it off with out jetting it but if u want to go for it a jet is a couple buks

 

[sheeblast]

and i am telling you i have seen people fry pistons because they took the air box lid off and didn't rejet.
dont be a f*cking moron and rejet.

 

[CarGuy420]

and i am telling you i have seen people fry pistons because they took the air box lid off and didn't rejet.
Dont be a f**cking moron and rejet.

i:i i:i i:i i:i
151151515151515

 

[super noober]

and i am telling you i have seen people fry pistons because they took the air box lid off and didn't rejet.
dont be a f**cking moron and rejet.

agreed, dont listen to the ONE guy saying you will be fine. take a look around, we know our sh*t here lol I:I

 

[acezeesawtooth]

it will take you 10 minutes to jet it... it will take you days and 10x more money to rebuild that seized piston... do the jet... also with the air restriction the way that it is built is to creat velocity by going from large to small the venturi effect as mention and when it gets the reed cage it is at the optimum velocity and released into the head so by removing the air lid it opens for more volume of air to be sucked through the system at a greater velocity increasing performance.

 

[hudack]

yeh dude idk i have seen many with it like that without the airbox lid and not pissed with and they runn good i didnt get it until i got a pipe reeds and a kandn so im not saying anything but i think youll be fine to take it off with out jetting it but if u want to go for it a jet is a couple buks

and its because of people like you that dont want to take the like hour out of your day to rejet is why blaster and 2 stroke have a bad name anytime ANYTIME you get more airflow in or out of the motor rejet just put a bigger jet in it its easier than rebuiding a top end and spending the money to do it and one thing for you you say they run good they only run good for now wait til they fry a pistion i see it in there future very soon

 

[royalt67]

Yep, anything that adds more air, even the denser air of winter, is a possible need to rejet. Coming from a guy who seized a piston recently.....I really need to tear into that today....

 

[blasterdubai]

Damn, ive been riding really fast without rejetting... But ill just wait till my New exhaust comes next week (my bikes being painted).
And dont worry as soon as possible im going to post some pics, and get Blaster of the month!!!!!

 

[blasterdubai]

if i remember right, the opening for air in the lid is bigger than the opening into the reed cage, so wouldnt that mean the restriction would be there instead of the lid? i know on my drz, on a stock motor, if you put a 3"x3" square hole in the air box, it gives it more of an increase in power and responsiveness than the stock opening, or anything smaller than that or bigger than that. so i am wondering if it has something to do with the pulses and not restriction

Is that your bike with the chick on it??