K & N filter

[beandip]

The small fuel line that runs up from the inner finder to a small divert er then one line runs to the back of the air box. This the fresh air supply to the gas tank. Drawing clean air from the air box. The small lines running from the tops of the SUs are vent lines . They allow the rise and fall of the fuel level and capture any fumes and spillage in the event of a shut off failure. The large hose coming from the valve cover , discharges gases and fumes into the air box so the engine can burn them . Adding just a little filter to the valve cover may vary well cause fumes in the cabin of the Z. There is a opening at the bottom area of the air box that is used if you are running a air pump, it is about a 1'' size. If you don't have a air pump you should plug this opening. I used a rubber cork from, the inside, Ace Hardware. Now there is a large hose connected to the intake manifold but it runs from the crankcase vent. This has a PVC valve at the manifold end and it must be retained. This is a one way valve that allows any build up of pressure to escape and be burned by the engine. Check and clean this valve from time to time. If it becomes clogged of stuck open , it could cause a lean issue. Blocked and it will cause the engine to acculmulate sludge. I hope this is of help. The stock air box on a mostly stock engine will build more power than the individual filters. E-2910 is the part number for the K&N filter that fits the air boxes. Gary :knockedou

[barth4567]

Running K&N in both my vehicles for a very long time. Never had a problem. In my opinion they are the best filters out there. :classic: