Snorkel not suited to V8 running on LPG?

**bee utey** · 5th August 2010, 09:38 AM

Originally Posted by Utemad

Hi Bee utey. Further to the info you gave me previously, I'm going to fit a balance pipe as you describe here.

When you say it has to be fitted between your old aircleaner inlet and the hole at the back of the converter, does that mean on the dirty air side of the air filter?

What would be the best place to connect to the plastic airbox in a Disco 1 94-98 model?

Usually when I connect a balance hose to a snorkel set-up I drill into the adaptor where it goes through the mudguard. The picture is from another AULRO member's snorkel install. If you connect to the clean side of the element you will not get the same power/airflow relationship as you had before. You would then possibly need a smaller mixer on the manifold. As I said before, it is the total restriction of the intake (up to the balance hose) that determines the gas mixture. If you change the intake length to the balance point it will certainly change the mixture. When you have finished just turn the main mixture 1/4 turn in either direction and test drive. You want the minimum amount of gas to give you maximum power. Any more is a waste.

**Utemad** · 19th August 2010, 07:22 AM

I fitted the balance hose on the weekend. Bought the correct fitting for the unit but used old gas vapour hose and garden fittings for the rest of it.

Connected up as per Beeutey above but my snorkel is a Safari so different execution.

No more stalling so I'm happy with that.
I also tried turning the ram head backwards which worked well too.

**PhilipA** · 19th August 2010, 08:15 AM

I tested the ram effect of a snorkel at 80-100Kmh in my 93 RRC 3.9 with a Minihelic gauge with input in the pipe between the aircleaner and MAF, compared to ambient pressure inside the car. Snorkel is LRA with standard head facing forward.
The ram effect was barely discernable but positive at approx 1 inch of water at 80-100Km cruise with very small throttle opening.

Interestingly the difference in throttle resonse is really noticable if you turn the head around.
Regards Philip A

**Waxenwane** · 19th August 2010, 10:01 PM

Originally Posted by PhilipA

I tested the ram effect of a snorkel at 80-100Kmh in my 93 RRC 3.9 with a Minihelic gauge with input in the pipe between the aircleaner and MAF, compared to ambient pressure inside the car. Snorkel is LRA with standard head facing forward.
The ram effect was barely discernable but positive at approx 1 inch of water at 80-100Km cruise with very small throttle opening.

Interestingly the difference in throttle resonse is really noticable if you turn the head around.
Regards Philip A

Was it better or worse Phillip?

**PhilipA** · 20th August 2010, 08:24 AM

Was it better or worse Phillip?

I assume you mean the throttle response. It was as expected better with the snorkel top facing forward.
Very mild supercharging so more air for a given throttle opening. Fully sick man.
Regard sPhilip A
Just remember that if it is turned around you will have a low pressure area over the opening so the effect is magnified.
I couldn't be fussed to measure it.

**mmoff1970** · 7th April 2011, 07:04 PM

This also happens with forced induction and LPG the balance pipe solution does work

Thread: Snorkel not suited to V8 running on LPG?

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