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  #11  
Old 19-01-12, 20:12
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I think if they have a frame that holds them away from the inlets then its not the same as traditional filter socks. I am running an ITG framed foam filter and on a rolling road it makes no difference fitted or not.....I does have 2" of clearance from the inlet trumpet ends though.
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  #12  
Old 23-01-12, 19:07
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Air filters are no more than rock catchers in the competition application. Any attempt at filtration will cause a pressure drop in the induction flow. A decent plenum chamber is without a doubt the tool for the job, but not always a practicality. I've used 'Wilco' tea strainers wired down to all four trumpets of my 2 x 45 DCOE Xflow Westie for some two / three years without any problem.
Be assured that a stone or even a small nut being sucked into the induction manifold WILL cause damage, if you are unlucky then it will be expensive damage ~ for the sake of a couple of quid put the tea strainers on !
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  #13  
Old 23-01-12, 20:03
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So is the brand new Pipercross I just bought going to be a waste of money. As far as I am concerned, if it stops anything from going in, I shall be happy. It only wants one gravel chipping and the engine could be wrecked. Neither can I understand why some competitors insist on running with the cam belt covers removed, could be they want to show of the fancy pulleys. A friend got a pebble in his, the belt slipped and wrecked the cylinder head.....
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  #14  
Old 23-01-12, 20:39
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Quote:
Originally Posted by kintryin View Post
unless they are supported with an internal cage/frame , They can be sucked in.
Agreed, a photo of a fellow competitors car once confirmed this fact.
A bit of bent welding rod threaded through the foam filters solved the problem.
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  #15  
Old 24-01-12, 08:46
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The new piper cross x range has reinforced sides to stop them being sucked in..
i use a pipercross box filter ive had no issuses..
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  #16  
Old 24-01-12, 09:11
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Quote:
Originally Posted by darcia1 View Post
The new piper cross x range has reinforced sides to stop them being sucked in..
i use a pipercross box filter ive had no issuses..
Thats right, mine is the same Darren.....
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  #17  
Old 24-01-12, 11:01
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Quote:
Originally Posted by redturner37 View Post
Thats right, mine is the same Darren.....
mine is more of a box design and is not domed like yours my good friend it gives more clearence around the throttles at either end
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