hi, i am putting an alloy rocker cover on my 1.3 xflow and replacing the filter box with a k&n one, what should i do about breather pipes?

Ran X-flows for 27 years in total on and off. 14 years in a Seven. In the Seven I had a pipe from the block breather and a pipe from the rocker cover that both terminated in a collection bottle. This was the basic requirement for track use and I never had an issue. But you must remove the valve from the block breather it its still there, won't work without vacuum.

Hi, thanks, there isn't a block breather on this, if you mean the one above the fuel pump then i don't have one, i think earlier 1300's might have had them but this one doesn't so i don't know where to run the pipe to, not sure i know what you mean about the vacuum though.

On my Lotus I run pipes from the cam covers back into the air filter/box.

What it blows it sucks back in.


Paul G

I'm putting a k&n on mine so i wont have any airbox connections, what am i supposed to do with the connection on the inlet? the one that used to go to the airbox?