Yamaha neos 2stroke air filter

[Cabbage2882]

I have a standard air box on my 125 neos 2stroke what would be the best air filter for my bike as my air box connects to my back box (variator) or should I just drill holes in my airbox

[Easy-X]

a) this should be in the Workshop thread

b) the best air filter is the one specified by the manufacturer

c) drilling holes?! do you also like goat and live under a bridge?
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Cabbage2882]

[iooi]

[Easy-X]

Normally you would unbolt it from the bike, open it up and replace the paper filter. Are you saying your air box is totally sealed, i.e. glued together?
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Evil Hans]

[P.]

Pics? Do you have the odd recirculation pipe that goes up to the air intake/somewhere.

Drilling holes would be a very bad idea.

Buying something faster/keeping this stock would be the 2 best options for you. I would not attempt to carve up bits of an airbox.

[1198]

If you’re trying to drill holes to increase flow and therefore power, unless you’re planning on other mods I wouldn’t trouble. More holes are likely to screw up the running.
I imagine someone will be coming along soon to explain further - to give you a damn fine teffing (in BCF lingo).

[Riejufixing]

[Cabbage2882]

[Riejufixing]

[Easy-X]

You're trying to get over 65mph out of an old 2 stroke scooter

Yes! Go for it, nothing bad could happen

BTW, if you succeed in replacing/modding the air box have fun re-jetting the carb
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Riejufixing]

[-]

2 Stroke's are very sensitive to jetting. Any slight modification to the air filter will make massive differences to the mixture and without up jetting to suit, will end up seizing it. On a 2T, the engine oil is delivered in the fuel mix, not from the oil in the sump as in a 4T.

To give an idea, on my old TZR250 race bike, just removing the internal trumpet (a rubber intake hose) from inside the airbox meant main carb jets needed changing from the standard 230's to 320's.

To get a 2T producing more power is fairly simple if restricted where the thing can be de-restricted, but a lot more involved if not, such as porting, reeds and expansion chamber.
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TZR250 2MA road, TZR250 1KT road, TZR250 2MA race, TDR250, YZF-750R Boost colours.
Jaguar S Type 3.0 V6 Sport R, VW Transporter T5 GP LWB Shuttle 140ps DSG.

[Fizzoid]

[Easy-X]