Desolation
Adventurer
I am wondering if anyone has tested their snorkel for flow restriction, and what results you came up with. In looking at many of them they look to be on the small side...
Just curious
Just curious
Snorkeling data.
- Thread starter Desolation
- Start date
FlatlinesUp
Adventurer
I don't have a snorkle, but I do have a leaf blower with a lot smaller motor than my 2500hd and the tubing on it is approx the same size as most snorkles I've seen and you can't hold your hand in front of it, so, I'd say it probably flows pretty well.
that and I've never seen posts/mention of "I put my snorkle on and it turned my truck to a turd"
But, like you, I'd like to see/hear some data if anyone has done so
that and I've never seen posts/mention of "I put my snorkle on and it turned my truck to a turd"
But, like you, I'd like to see/hear some data if anyone has done so
chasespeed
Explorer
If its that important to you, one thing you could do....
Get the cross sectional area of the vehicles stock air intake tubing.
This is Pi x r2=A Pie, times radius squared equals area
So, if your intake tube is 3inches across...
So, your radius is 1.5...
Multiply 1.5x1.5 =2.25
2.25x3.14=7.065
7.065 square inches
NOW, as long as the snorkels cross sectional area is the same, or larger, it shouldnt be restricted.
This does NOT take into account the friction coefficient of the air moving through the system.
BUT, I am sure someone somewhere figured all this out for ya.
Chase
Get the cross sectional area of the vehicles stock air intake tubing.
This is Pi x r2=A Pie, times radius squared equals area
So, if your intake tube is 3inches across...
So, your radius is 1.5...
Multiply 1.5x1.5 =2.25
2.25x3.14=7.065
7.065 square inches
NOW, as long as the snorkels cross sectional area is the same, or larger, it shouldnt be restricted.
This does NOT take into account the friction coefficient of the air moving through the system.
BUT, I am sure someone somewhere figured all this out for ya.
Chase
xcmountain80
Expedition Leader
It's more efficient than an intake manifold full of water. There is no science or math needed to establish general common sense that an engine sucking air will run better than an engine sucking water (in the form of a wave, pool, river, etc.).
A
A
Desolation
Adventurer
LOL!
I suppose that I should admit to many years in racing and engine design and development.
I can easily calculate the cross sectional area and boundary layer effects, and the various other factors. Of course, I would have to have one to measure.
I was simply curious (because I have never seen flow ratings on the various brands) if anyone had ever taken the typical installed snorkel system and plumbed a vacuum gauge in to it above the filter to see what the pressures were under various operational conditions.
I really am just curious that is all.
I do not own a vehicle that there is one available for, and I do not in the real world know anyone that is running one. I really can not justify buying one just to satisfy my idle curiosity it just is not that important.
Silver dude
Xplorer
I'm also curious, mainly I'm worried about the throttle response.
Desolation
Adventurer
THAT is a good Point!
UK4X4
Expedition Leader
High level air intakes are firstly designed for extending the range between air filter change or clean outs.
ie normally air intakes are located in the wheel wells, probably the dustiest place possible.
one short dunk into a bowl of fesh fesh and your "filter" just lost 30% of its flow.
Do it 4 times in a day on a desert crossing and you have some trail side cleaning to do
The raised air intake did'nt see 1% of the dreaded talcom like powder.
The added benefit in preventing hydro lock comes with the turf.
There are no rivers in Oman, but every 70 series has a raised air intake.
The filter too is HUGE, same as my Nissan, a bucket sized circular filter, with probably double the surface area of a flat square intake filter.
ie normally air intakes are located in the wheel wells, probably the dustiest place possible.
one short dunk into a bowl of fesh fesh and your "filter" just lost 30% of its flow.
Do it 4 times in a day on a desert crossing and you have some trail side cleaning to do
The raised air intake did'nt see 1% of the dreaded talcom like powder.
The added benefit in preventing hydro lock comes with the turf.
There are no rivers in Oman, but every 70 series has a raised air intake.
The filter too is HUGE, same as my Nissan, a bucket sized circular filter, with probably double the surface area of a flat square intake filter.
Hilldweller
SE Expedition Society
Plus temperature.
The under-bonnet environment gets very very warm when you're climbing a steep slope, sometimes in the neighborhood of 300 degrees. A raised exterior intake is providing much cooler air for the engine to breath, even if it's a searing 130 degrees outside.
The under-bonnet environment gets very very warm when you're climbing a steep slope, sometimes in the neighborhood of 300 degrees. A raised exterior intake is providing much cooler air for the engine to breath, even if it's a searing 130 degrees outside.
corax
Explorer
from Roger Brown's site - 4crawler "custom snorkel" - where he ran 2" PVC into the windshield cowl
4crawler said:
xcmountain80
Expedition Leader
Desolation
Adventurer
Ahhhh! The Jeep thing I don't understand. LOL!
xcmountain80
Expedition Leader
Given that that is accurate, then the numbers are about the same perhaps a little better?
A
Desolation
Adventurer
Interesting! Thank you!!
I have back crunched the numbers and the results fit with the limited data presented. Which is a good thing, and better when combined with overall dryer and cleaner air intake!
I still wonder based on my experience with the inefficiency (flow) designed into most (not all) factory systems just how efficient these systems are given the constraints they could remove on the OE design. For example remove everything in-front of the filter and test, then install the snorkel and test... Perhaps a different thread
Thanks again!