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Date: Thu, 07 Sep 2000 15:04:23
Subject: RE: Derbi Predator
From: Sycho Racer
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---Hahaha...You're right....although ram air with the K&N couldn't hurt.
After all, you'd have colder air in a less restrictive manner.

Ali

>Gaining power by drilling the airbox intake can only be achieved if the
>intake tube cross section area is smaller than the carburetor intake cross
>section area (a widely used restriction on Minarelli powered scooters BTW),
>however as Goran explained a wider main jet will be required. Any hole/tube
>wider than the carb will only make more intake noise and won't increase
>power. Same goes for "ram air" conversions.
>Why would anyone just remove the air filter instead of finding one with a
>lower flow resistance (e.g. a conoid K&N filter or similar) is still a
>mistery to me. Imagine small stone dust slowly grinding away the piston
>surface, tearing the bearings and scratching the cylinder sliding surface
>up
>to the point when the whole thing seizes. Probably and according to Murphy
>in a cold dark night in the middle of nowhere. But hey, you need
>performance..
> >list.


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