GU snorkel and bar

By the Nissan one do you mean the Safari that is shaped around the flare to form a triangular shape, or do Nissan have a model of there own?

The Nissan unit, made by airtek me thinks, is totally different in design to the standard safari and Airtek units.

The Nissan units slope up the windscreen frame from above the side-indicator beacon. The snorkel intake sits above the roof line, collecting the air from the high-pressure point above the windscreen.

I don't think that it does anything fantastic, but it certainly is better than paying for a new engine!

Surely the air taken in thru a snorkel would be cooler than under bonnet air! In which case it would be far richer in oxygen.
I am also trying to establish which brand of snorkel to fit, I was told by Airflow Snorkels, that the Safari collector has far better dynamics than the Airtec, increasing rather than hindering air flow.

Ok.

Think about this....

Turbo-charged Diesels, even with intercoolers, the intake tempurature is around 45-60 degrees, due to compression artifacts and heat-soak in the turbo and other components.

So, When I installed my system, I tested my intake tempuratures. On a 2.5 degree night, the intake temps were 43 degrees (fast idle for 20 minutes)

I put my snorkel on, with a Unifilter (my set up!) and again tested my intake tempuratures. The intake temps were down .1 degrees! This wasn't on cablibrated equipment, so I could not even say that this was an improvement, as the device was not accurate.

With this, the intake tempuratures haven't changed at all, the density of oxygen hasn't changed.

The improvements that I've seen are with the lovely induction noise, the sounds that the turbo makes through the snorkel/filter and the fact that I am not going to have a dead engine come water-crossing time!

Chris

I have just sold a SWB MQ that was also dual fuel and it ran like a charm on both gas and petrol. The GU I picked up on Friday at so far it also runs really well on both, although I havn't run it a lot on petrol, with unleaded currently at $1.09 Ltr who can afford too.