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More air into air box

PostPosted: Tue Mar 05, 2019 3:14 pm
by WOO
Good afternoon
My early series 2 is now upgraded from a 125 to a 175 with a 22mm scootopia carb.
All runs nice with the original air scoop taken off so i have got a much larger GP scoop which will fit.
My air box has an 18mm inlet, i hear that you can drill holes in the box to improve air intake as well.
If that is the case does anyone know how many holes to drill, what diameter and presumably drill them near the top of the air box.
cheers

Re: More air into air box

PostPosted: Tue Mar 05, 2019 6:06 pm
by superhooper
Fit a GP airbox. It has a larger opening I believe

Re: More air into air box

PostPosted: Wed Mar 06, 2019 12:39 am
by Hoss
I drilled a lot of holes in the forward face of airbox about 12mm holes I think. I Also cut out as much of the baffle/inlet tube inside the airbox as I could

Re: More air into air box

PostPosted: Wed Mar 27, 2019 11:02 am
by hullygully
Try random 10mm holes on both sides of the filter box, then they're hidden by the tank & toolbox,
don't forget a quality breathe sweet airfilter also, aswell as removing the internal swan kneck, 8-)
but JET UP TO SUIT :shock:

Re: More air into air box

PostPosted: Wed Mar 27, 2019 5:57 pm
by lozmondo
theres one on ebay already drilled...not sure who is selling it though :? :D

Re: More air into air box

PostPosted: Wed Mar 27, 2019 10:11 pm
by Knowledge
Try buying one of these to cut your own holes. They are a lovely tool to use and perfect for this kind of job.

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F362061659406

No distortion and no burrs to clean-up, as it cuts a perfect circle every time.

Re: More air into air box

PostPosted: Mon Apr 01, 2019 12:32 pm
by Rich Oswald
lozmondo wrote:theres one on ebay already drilled...not sure who is selling it though :? :D


If it is the one I saw, it is sold.

Re: More air into air box

PostPosted: Mon Apr 01, 2019 9:51 pm
by daniel whiteley
Just modify the inlet to be 50mm like the bgm ones , when you cut the original neck off the inner baffle will come away easy enough

Re: More air into air box

PostPosted: Tue Apr 02, 2019 7:06 pm
by lozmondo
Rich Oswald wrote:
lozmondo wrote:theres one on ebay already drilled...not sure who is selling it though :? :D


If it is the one I saw, it is sold.


Nope :D