Thread: Snorkles

Originally Posted by RonMcGr

Yes I did, home made filter and housing, sucking air near the bonnet.

I think snorkel up near the roof is going to pick up cooler air and less dust.
The top of the snorkel will also draw FAR more air than the tiny funnel sitting behind the head light in my Disco 1.

FWIW, Norm Dewis drove a Jaguar XK120 in Belgium, 1953, and won the highest speed for a production car.
He was in Brisbane at one time and told us they removed the drivers side headlight and put a funnel in it's place, leading straight to the twin SU's. He got that car that normally did a 120mph, to do 173 mph. He achieved that by the funnel and sitting on the floor with no windscreen.

Compressed air does work.

Yes ram air does work, when you're doing between 200-300km/h. At legal speeds it does nothing but collect insects.
At 100km/h the maximum air pressure increase possible is 0.4% of atmospheric.

That link shows the stock air intake on a V6 Grande can be improved upon. I bet without a 2m long snorkle on it'd do even better.
But remember, intake restrictions on a petrol engine do not harm fuel economy. You can make that intake as open as you like and not get any improvement.

I've checked out the dust cloud when following other vehicles on gravel roads, a snorkle aint going to help there. If you want a cold air intake, there are ways to do it without adding 2m to your intake tract.

Originally Posted by Dougal

Yes ram air does work, when you're doing between 200-300km/h. At legal speeds it does nothing but collect insects.
At 100km/h the maximum air pressure increase possible is 0.4% of atmospheric.

That link shows the stock air intake on a V6 Grande can be improved upon. I bet without a 2m long snorkle on it'd do even better.
But remember, intake restrictions on a petrol engine do not harm fuel economy. You can make that intake as open as you like and not get any improvement.

I've checked out the dust cloud when following other vehicles on gravel roads, a snorkle aint going to help there. If you want a cold air intake, there are ways to do it without adding 2m to your intake tract.

Okay, I can see your point of view!

Keep smiling and have a good day

Luke,

The tests you did was closer to the truth
The Snorkel does have a big impact on the air flow to the engine.
I'll let you know what it does to my asmatic disco
On it's own it is okay, but under load it ????

Maybe Phil has more info.

Cheers,

Originally Posted by RonMcGr

FWIW, Norm Dewis drove a Jaguar XK120 in Belgium, 1953, and won the highest speed for a production car.
He was in Brisbane at one time and told us they removed the drivers side headlight and put a funnel in it's place, leading straight to the twin SU's. He got that car that normally did a 120mph, to do 173 mph. He achieved that by the funnel and sitting on the floor with no windscreen.

Compressed air does work.

An earlier post in this thread mentioned a point about "air rams" not helping a carby engine, as the carby would have to be tuned for the different air/fuel mixture (which would change as you increase speed i assume)... Anyone know anything about this (before i make a snorkel for the carby'd Bulldog...

thanks to both Luke and Ron for providing some actual data rather than just opinions... of course the best set-up for a ram air effect (for those of us unlikely to do deep water crossings) is a short direct air flow into the airbox. On my S1 Disco, I had a Safari snorkel head going straight through the bonnet into the airbox. Not pretty, but effective. I'm obviously not keen to do that on my S2 Disco, and don't think I'll start butchering the front grill/headlight area to put in a cold air intake...looks like I'll be getting a 'proper' snorkle set-up this time... I guess one alternative would be a GU bonnet scoop feeding into a cold-air intake which wouldn't look too bad...(and was actually how I tidied up my S1 Disco before selling it)

Just thought I would post some pics of my setup showing stormwate pipe fittings and othe PVC fittings available at your local hardware or plumbers supplies, only cost a few bucks and has lasted OK for 2 years now, Regards Frank.

Cant get pics up from Gallery, has it been changed, haven't had problems before, any tips appreciated, Thanks Frank.

Can check out pics under "T" in the Gallery section, go to "Tank"

Originally Posted by Tank

Just thought I would post some pics of my setup showing stormwate pipe fittings and othe PVC fittings available at your local hardware or plumbers supplies, only cost a few bucks and has lasted OK for 2 years now, Regards Frank.

Cant get pics up from Gallery, has it been changed, haven't had problems before, any tips appreciated, Thanks Frank.

Can check out pics under "T" in the Gallery section, go to "Tank"

I found your pics OK. I did a search in the Gallery section for picture by Tank.

I was hoping when you mentioned PVC pipe that you had made the whole thing from PVC including the external part.
I have considered making a snorkel for my 300Tdi Defender from PVC and wondered if anyone could think of any reason why it would be a bad idea.
My thinking was that there are so many sizes and so many angle fittings available it should be possible to get just the shape I need.
I also thought that if I made a new plate for where the air intake is in the mudguard, I could return the vehicle to standard just by putting the original plate back.
I figure that if I bump into a tree or something, it doesn't matter if it breaks because I still have the original air filter doing what it always did.
I thought it would be easy to seal and pretty cheap to make.
My main concern was the heat in the engine bay, but your experience suggests that is not a problem.

Any thoughts on the subject?

Originally Posted by Tank

Just thought I would post some pics of my setup showing stormwate pipe fittings and othe PVC fittings available at your local hardware or plumbers supplies, only cost a few bucks and has lasted OK for 2 years now, Regards Frank.

Cant get pics up from Gallery, has it been changed, haven't had problems before, any tips appreciated, Thanks Frank.

Can check out pics under "T" in the Gallery section, go to "Tank"

Hi Frank,

Interesting set up

How do you find the extractors?
More heat inside the cab?
Noise?

Cheers