I added a Safari Snorkel to the 90 late in 98 - a few months after a narrow escape in Lake Rerewhakaaitu. The lake level was 1 metre up on normal, but I didn't notice until we were committed to a now very underwater track. We made it about 300m, and then decided to turn around. I managed to climb through some scrub out of the water to plan our retreat and dry out. Only problem was, we had to go back the way we came. After dosing the electrics with CRC we set off - after 100m the engine stalled, but a popped back into life with a flick of the key. After another 100m, it happened again! Again the 90 started and we got through the last section without a hitch. Phew!

The snorkel was easy to fit, but I'm still finding more things that need waterproofing. I've extended and re-routed the breathers on the diffs and the carbies - strangely enough the carbies have breathers which caused my problems in the first place (Underwater, the breathers couldn't supply atmospheric pressure, so the carbies acted up, stopping the motor briefly. Not what you need in deep water.)

If you want to buy a snorkel, have a close look at the parts book first. The entry point where the snorkel goes through the bodywork, and the hose routing need some thought. Things like brake boosters and air conditioning can be in the way. 

For dusty trips, a pre-cleaner can be mounted on top of the snorkel, it saves cleaning the main air filter every day.

The snorkel does work. At a recent club trip the water was over the bonnet on one obstacle. That's getting a bit too deep, but we got through fine.

The airflow may be restricted by a snorkel though. I haven't noticed it, but for higher-performance motors a 3" pipe is too restrictive at higher revs.

June 2002 - noticed that the steering arm had been rubbing on the snorkel hose and had worn a 1" hole in it. A new hose has been fitted and carefully routed. Any points wher it might rub are protected by rubber shields now.