Post by
Silvia007 »
https://forums.nicoclub.com/silvia007-u255.html
Thu Dec 30, 2004 8:16 pm
You don't want to cap it, if no pressure escapes your exhuast will spew out a smoke cloud large enough to to cover 3-4 city blocks. Anyway, the valve thing may be the boost sensor.
If you have a S13 SR, the oil catch can is located on the same side as the T in the valve cover towards the back of the engine. It's got two hoses connecting to it. The bottom fitting on the factory oil catch can goes down tot he block, the block has a fitting for the hose. The other hose goes to the T on the valve cover. The other fitting on the T then goes to the intake before the turbo.
You do not absolutely need a oil catch can but I would suggest betting one. Cusco catch cans are only $100 bucks. Cheaper on ebay.