Damo's GU IV 4.2 STS

[Rip'n'Shred]

I've also read a few posts on various forums about the restriction in the snorkel just before the airbox. Every post I've read talks about the Nissan Airtek snorkel, but I have a Safari snorkel.

I decided there was only 1 way to find it if the Safari had a similar restriction. I dismantled what seemed to be 1/2 the front end to get to the tubing between the snorkel and the airbox. I ended up removing the whole snorkel to clean up the guard and the hole and ensure the join was sealed 100%.

Whilst not as bad as the Nissan Airtek snorkel restriction, the Safari also drops down the diameter of the pipe at the last elbow before the airbox. I found the airbox inlet to be 3.5inch which is pretty close to 90mm. The diameter of the snorkel before the restriction is also 90mm.

So I cut off the flange from the airbox and the restrictive part off the snorkel. I hunted around for 2 days trying to get a silicone 90 degree 3.5 inch elbow with no luck. Plenty on ebay, but nothing local and I needed the vehicle back together for a trip away. So I used some 90mm pvc pipe, a 90mm elbow, and some rubber joiners with house clamps from local plumbing supply store. The end result was very pleasing. Unfortunately I didn't take many pics but here's some from the drawing board stage after removal.





So now I have a 3.5 inch snorkel all the way to airbox with K&N filter and a 3.5 inch outlet on airbox lid to turbo. It had definitely helped to let the engine breath easier. Even the snorkel mod seemed to help a bit.

Still hope to get a 4 inch snorkel and airbox one day.