Ok. So, not having any luck sourcing another company offering a vented valve cap, I decided to make my own. Actually, I made two...
Here's how I did it:
02 sensor extender - m18 x 1.5 thread and 37mm long.
M18 1.5 to AN10 banjo fitting
Welded onto cap and primed
Hole cut out of oil cap lid + painted
Just waiting on the banjo bolts to arrive. I personally prefer the banjo bolt setup, rather than a straight pipe or vertical fitting, because I have about 50mm of clearance between the bonnet and the oil cap in the 360. I will post a photo of it all together once I'm done. I had to pay for my machinist friend to weld the 02 sensor extension on, which almost doubled the cost of making them! But each one cost approx $55, not including my time. $35 in fittings and $20 in labour.
