fromos Posted October 18, 2012 Share Posted October 18, 2012 Hello guys this may seem like a newbish question I've been reading BSH for a while and recently watching cafe racer on sky and I've noticed they use a airfilter im unfamiliar with I no what the stock filters look like on most bikes and the mesh type k and n but what the stainless steel ones that look like the end of a exsaust with the mesh inside they look hollow any links or anything would be apreciatedUsualy found on the vintage bikes. Quote Link to comment Share on other sites More sharing options...
Tango Posted October 19, 2012 Share Posted October 19, 2012 I think you are talking about velocity stacks. ...a trumpet shaped metal device.....sometimes with a mesh grille across the end. Doesn't filter the air at all......so not very practical for a road bike.... was popular with old race bikes.....that needed an engine rebuild after every race....lol. Quote Link to comment Share on other sites More sharing options...
mattycoops43 Posted October 19, 2012 Share Posted October 19, 2012 Tango's right, but a lot of performance engines still use them, but underneath a foam sock filter. the stack is shaped to improve velocity into the carb and increase power. BMW's etc have them inside the air filter/manifold system. Quote Link to comment Share on other sites More sharing options...
fromos Posted October 19, 2012 Author Share Posted October 19, 2012 Cheers guys I was just intrested in them maybe learn stuff about them they must be a bit tricky to fit I assume I just use k an n myself they look pretty old school thanks alot guys much apreciated Quote Link to comment Share on other sites More sharing options...
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