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Advice on using a Snorkel with LPG

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Rossko:
Let's guess you have a mixer-type LPG system.   If it were a multipoint type it would be unaffected.

A mixer type will be affected by the change in freedom of airflow, but that should be able to be tuned out easily.  You will need to re-tune the LPG system.
The vital thing to avoid with the snorkel is introducing a ram effect, as already pointed out, which would introduce air pressure changes to the situation as well.

lcruiser100s:

--- Quote from: Rossko on March 24, 2010, 09:41:20 ---Let's guess you have a mixer-type LPG system.   If it were a multipoint type it would be unaffected.

A mixer type will be affected by the change in freedom of airflow, but that should be able to be tuned out easily.  You will need to re-tune the LPG system.
The vital thing to avoid with the snorkel is introducing a ram effect, as already pointed out, which would introduce air pressure changes to the situation as well.

--- End quote ---

I have a mixer type LPG system on a straight 6 with a snorkel. with the LPG tuned properly it is unaffected and my ram is facing forward. I have done aprox 30,000 miles with no problems. I have heard that if the LPG is out of tune it will be affected.

saintsboy:
i have a 3.5 v8 disco with single point lpg system on it and a mantec style snorkel and it had no effect on the running at all
 :lol:

mark-d:
i saw a d2 v8 with a snorkel on ebay the other week

Range Rover Blues:
I've got a safari snorj=kel on Blue, which is a V8 with LPG.

A couple of years ago we did an experiment to prove what I knew all along, this talk of ram-air is rubbish!

Blue runs with an old-school mixer system, it relies on the vacuum generated by the engine to regulate LPG flow, it needs the restriction of the "injector" ring too do this and any chang ein air filter or inlet will effect it.  having air pressure under you bonnet can cause problems too so I sealed the leading edge with an old door rubber.

The issure with a snorkel though is the extra restriction on air flow, this accounts for a pressure change 10 times or more than that created by so-called ram-air.

If you run the snorkel all the time then get the LPG retuned, or do like I did and connect the LPG to an elbow on the side of the airbox, make a blank plug for the fornt of the airbox and only fit it when you go wading, at low revs Blue will run on LPG or switch to petrol for wading (it's easier to burn so less likely to missfire anyway).


http://www.mud-club.com/galleries/Range-Rover-Blues/6004-RRB-Snorkel/

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