Here is my experience with air filters on the Yamaha Blaster...
I experimented with MANY different ones...
#1 K&N
#2 No Toil
#3 Stock
#4 UNI FILTER
Uni Filter is my favorite with the stock air filter second. Any oiled foam is the best in my opinion (except for the notoil).
Please read on as I explain...
I'll pass on the K&N. The reason is because that little washer they give you that prevents the steel tube of the cover from sinking into the plastic,can get pulled out of the plastic threaded base when fitting the air filter,and can go un-noticed. This happened to my buddys blaster. That little washer made it through the carb,through the reeds,down into the crank case,and was able to bounce up into EVERY (all 4) tranfer ports and kiss the rings (in all four places) and lock them into the grooves. Instant "no compression". I was able to save the cylinder. Amazing what a "soft" 2 cent washer can do. Thank god it wasn't a "grade 8" washer. This probably wouldn't have happened if the washer was glued into place. In my opinion,they don't filter the dirt as well,so I would recommend an "outer wears" pre filter if your going to use a K&N filter. The draw back to this whole set up is the cost of the filter,and outer wears pre-filter. Your talking around $60 + In my opinion that ridiculous. I can get three (3) INCREDIBLE
Uni-filters for that!
I thought the Notoil filter was a good concept untill I noticed that it was choking off the air do to its thick filtering oil. I had to go down 3 to 4 jet sizes to compensate for the loss in air flow. I lost power because of this stupid air filter.Thats ridiculous. I thought that maybe I put too much of they're oil (actually a parafin mix) on the filter,so I tried they're "spray",but this also did not fix the problem,So I tried they're "Non-alcohol" based spray and liquid,and still was in the same boat. No thanks Never again. Neat concept,but it didn't work for me. I tried more than half a dozen times to make it work. ..Same results. I shouldn't have to go down on my main jet after changing the air filter. Go figure.
As for the stock filter...WORKS GREAT! It has that fine "Hair" on the outside to help catch the fine stuff. Yamaha used this style for a reason. IT WORKS! and IT BREATHS WELL! The reasons I like the Uni filter over the stock one,is because its "RED",and I can see how dirty it is,...its a "Two stage" filter ...it has an "inny" and a "outy" layer,and the glued seams hold up to every solvent I've thrown at it,even though most of the time I use the "Uni Filter" cleaner.
Hope this helps you out. Notice I didn't just say "Uni Filter" as my answer? Those kind of answers SUCK! I just explain "Why".
I hope this helps you out in your decision making.
. It was horrible. I replaced it with a k&N and the bike would not run. I did a little research and read that with this particular filter i wouldnt need to change the jetting. Any ideas why the bike didnt like the K&N. I hope UNI works better for me, being that its more similar to the stock one. Any suggestions anyone could give me I would appreciate.
