K&N Filter

[Mark82]

Just fitted a K&N to my s1 elise, sounds great. But notice that at the base of the filter is a 90 degree pipe, is this normal? Beleive that it could be for drainage. Just seems strange to have a hole - kinda defies the filtration idea?!?!

Oh yeah, bought the filter second hand, hence the querry!

Cheers

[TIPPER]

I'll have a look at mine in the morning.

[shangani]

If the hole is between the filter and the throttle body, then there is a problem - you could be sucking dirt into the intake manifold which will have dire consequences for the engine.

The normal K/N cone filter is uncovered and is just a cone at the und of a rubber pipe from the throttle body. If the filter is in a housing - like a hurricane - then it is not unusual to have a hole in the bottom of the housing to allow water to drain out.

Something sounds odd - post a picture and we might be able to give better advice.

[Mark82]

how do i post a pic on here? stupid question i know

[Mark82]

Pics here....

http://photos.yahoo.com/markwynne

[shangani]

I have never seen that on a K/N cone filter. Did that connect to some other part of a different car? - I take it this kit wasn't on a lotus before you got it?

The lotus kit (eg the one sold by Bell-colvill) is closed off across the back of the filter except where the 80mm pipe clamps on and it doesn't have that extra pipe. That appears to allow dirty air to bypass the filetr. Not good for the engine - you should consider putting the old airbox back in or closing off that pipe somehow, but if that is allowing unfiltered air into the throttle body, it is v bad.

[Mark82]

Yeah, was run on an s1 elise.... so who knows!?!? was going to just seal up the hole. the install looks right...