Hello All.
When buying a foam air filter like ITG or Pipercross. There is an inner measurement and an overall measurement. Is there a set distance the inner should be away from the mouth of the air ram? I seem to remember reading somewhere that there had to be a 25mm gap but can't find the write up again.

I read minimum of 25mm as well so went for the big one, bit of a shame though as i now have to chop a whole in the bonnet.

Yes thats what I'm trying to avoid. At the present I have 108mm long trumpets with gauze on them. I'm planning to fit 65mm trumpets and a foam filter but if the inner size has to be 25mm more it will mean that the outer size will protrude through the bonnet.
This diagram seems to tell a different story.
Rescued attachment File0003.jpg

piddy
i was told at least 25mm with my pipercross & iam sure its also what it said on the instructions

so mine looks like this
Rescued attachment PICT0026.JPG

I've got the ramair on the blade carbs and its going to stick through the bonnet a bit, well actually a lot.

Would have been even more i i didnt have to move the eng over a few mm to stop the oil filter and steering shaft getting together
Rescued attachment zetec eng 001.jpg

25mm, so mine looks like this (Blackbird carbs on Zetec)

[Edited on 1/5/07 by givemethebighammer]
Rescued attachment airfilter.JPG