[slownugly]

Haha so how do you know your straight valve wasn't modified?? Because they don't have part numbers either!!!

Even though all of my z1s have the original part numbered lower part you are suggesting they came from the factory with 2 pcv valves?

What year is your vx? Can you take a pic of your bottom fitting? My 92 and 93 engines had the blue valve. The other 2 are out of 94s and they have brown valves. Maybe if yours is a 95 they flopped them that year.

TomO nailed it in the first paragraph of his thread.

"Make sure to check the vacuum/PCV hose going into the black box on the back side of the engine block to see if your PCV valve is located there. If you are able to to remove it, clean it, and still have it work, then you may use it again or if you can obtain a replacement OEM style to use. If you can only get the 90* "normal style" then use this guide to "gut" your OEM straight PCV valve and install the 90* unit up on the intake manifold runners for ease of maintenance/cleaning/replacement in the future."

I wish I would have read it closer before.