RAIs

[discojools]

Anybody experienced both the LR RAI and Safari Snorkel on their cars? Just wondering if there is any difference in wind noise. Prefer the look of the LR one and I believe there are kits available to make them waterproof.
Had Safari on my D3 and noticed a slight increase in wind noise.

As a side note I tried to order Dolium 80ltr fuel tank and wheel carrier today but was told that none were available and won't be for 3 months. Bit disappointed!

Jools.

[ADMIRAL]

Hi Jools,

There was another recent post on this subject. I posted some comments on the Safari snorkel. Do a search and I'm sure you will locate it. I doubt you will get a definitive comparison data, without a side by side test in identical vehicles. Once the windows are up, you would be hard put to hear any real noise with the Safari. ( my experience in 2.7 D4 )

[Redback]

I've had experience with both, our D4 has a Safari Snorkle and a mate has the RAI, the RAI makes a sucking noise, although not really bad, and usually only heard when the drivers window is down, it can be heard under heavy accelleration with the window up.

My personel opinion is they are pointless if they are not sealed, which they aren't, what is the point of a perferated tube from the airbox and not sealing them at any of the joins or at the airbox:spudnikwhat:

Defeats the purpose of Raised Air Intake if it's sucking air from under the bonnet:confused:

[Dorko]

Got the LR RAI and its quiet as a mouse.

Mates got a Navara with a Safari Snorkel, its noisy with the wind hitting the mouth. So he bought a filter and its quiet as mine.

RE: the RAI is great to keep dust out of the filter, especially when following someone offroad. It might not be water proof, but i dont care as i dont exactly think the Disco is built for swimming anyway.

Dorko

[discotwinturbo]

My safari is noisy with window down.....nice sucking noise.

[Mike_S]

Yep, nice V8 induction noise with my LR RAI if I have the window & foot down. Quiet otherwise.

[dominicbeirne]

Anybody experienced both the LR RAI and Safari Snorkel on their cars? Just wondering if there is any difference in wind noise. Prefer the look of the LR one and I believe there are kits available to make them waterproof.

Hi Jools,

I believe all part numbers are the same for D3 and D4. If using LR's RAI don't change the elbow at the filter under the bonnet. That is perforated but the one provided when built new from the factory supposedly isn't.:unsure:

As a worst case you could seal the elbow supplied with the RAI kit and voila - snorkel - or so I believe. This is what the blokes at Austral in Brisbane are saying to me at any rate.

Cheers


Dom

[jonesy63]

I had RAI on my D3 and now have Safari Snorkel on my D4. The RAI was noisier for intake noise with the drivers window down - due to intake being at the back. Wind noise from speed is about the same on both - can't tell the difference with roof racks on! :D
Cheers,
Rob

[Platypus]

I was speaking with the guys from Ritters at the 4WD show last week and if they fit a RAI they'll seal it as per snorkel.

[Disco4SE]

I was speaking with the guys from Ritters at the 4WD show last week and if they fit a RAI they'll seal it as per snorkel.
I have heard the same thing.

BTW: Has anyone noticed a difference in either power or economy??

Cheers, Craig

[discowhite]

I have heard the same thing.

BTW: Has anyone noticed a difference in either power or economy??

Cheers, Craig


my OE LR RAI is sealed, easy 20min job.
i reckon it suits the D4 shape better.
yes it makes some induction noise, mainly only noticed in low speed low range driving, i mainly drive with the windows up so i dont see the problem.
as for power, dont think it lost any power as such, but it did increase the length of the turbo lag. bluefin fixed that thou.
economy couldnt tell.

cheers phil

[101RRS]

my OE LR RAI is sealed, easy 20min job.


I understood that getting the pipe out that joins the intake to the airbox is a real pain - your 20min job comment indicates it is relatively easy - did you seal all the little holes in this pipe or replace it with something else.

The main reason I ask is that I will be fitting an RAI in a couple of months and want it waterproof.

Also the main chamber in the airbox has a rubber one way valve in the bottom that in theory should let water out but not in, I assume this can be left as is. There is a secondary chamber that just has a drain hole at the bottom but has no valve so in theory can let water in - I assume this is sealed to keep water out - I will probably put in a one way valve in this hole as well. Water can still make its way down a snorkle (particularly if it faces forward - not an RAI issue) and this water needs to be able to drain away in the airbox.

Garry

[Dirty3]

Has anyone purchased the LR RAI local? If so, at what price are the dealers asking or should I just go online and save a few $$?

[dominicbeirne]

I understood that getting the pipe out that joins the intake to the airbox is a real pain - your 20min job comment indicates it is relatively easy - did you seal all the little holes in this pipe or replace it with something else.

The main reason I ask is that I will be fitting an RAI in a couple of months and want it waterproof.

Garry

Hi Garry

Hopefully these bits and pieces may be useful for you.

DISCO3.CO.UK - View topic - Waterproof RAI? (http://www.disco3.co.uk/forum/topic50219.html)

DISCO3.CO.UK - View topic - Removable Snorkel (http://www.disco3.co.uk/forum/topic14190.html)

Land Rover Discovery 4 - Raised Air Intake Extra Parts - LR013711LR020024 (http://www.landroverpartsstore.co.uk/discovery-8/land-rover-discovery-4-raised-air-intake-extra-parts-lr013711lr020024.html)

Cheers

Dom

[101RRS]

Thanks Dom,

Looking at the pdf instructions I can see why it only took a short time to install the RAI.

Looking at those links, posters have said that the airbox is sealed but seemed to have missed the secondary small chamber that has an open hole at the bottom - it is only the main chamber that has the little one way rubber valve at the bottom. So the airbox is not sealed.

Cheers

Garry

[Graeme]

Are the extra parts, the elbow and tube, required?

[discojools]

From what I have seen in this discussion am I right in saying that the 3ltr does not have the drain hole at the bottom of the air box like the 2.7?
Maybe this is why the elbow has holes in it specifically for the 3ltr so that any water that enters the RAI can drain through the elbow. I have just had a look at the airbox on my 2.7 D4 and there is a drain whole about 5mm diameter in the compartment on the front of the box. There is no one way rubber valve though and it appears to drain into the cavity between the body and the plastic mud guard. I was sure there was a one way valve on my D3. Can anybody confirm this? I can't see that this would be a problem when driving through water but could be if the car was left in water for a long period of time.

Thanks to everybody for their info.

Discojools

[discowhite]

I understood that getting the pipe out that joins the intake to the airbox is a real pain - your 20min job comment indicates it is relatively easy - did you seal all the little holes in this pipe or replace it with something else.
yes mate, i replaced it with some 65mm(?) convoluted air pipe. think you can get it from pirtek etc? just undo the staples:eek: the hold the old ends in place and refit with the new pipe and sikkaflex. the hosee its self comes out easy. push the inner guars bit in and pull it all out the air box end (after the air box has been removed)
after that use a piece of high density foam to make a seal between the inner guard and the RAI body, again sikaflex the foam to the inner guard, then when to refit the RAI it will push on the foam and make a seal.
The main reason I ask is that I will be fitting an RAI in a couple of months and want it waterproof.

Also the main chamber in the airbox has a rubber one way valve in the bottom that in theory should let water out but not in, I assume this can be left as is. There is a secondary chamber that just has a drain hole at the bottom but has no valve so in theory can let water in - I assume this is sealed to keep water out - I will probably put in a one way valve in this hole as well. Water can still make its way down a snorkle (particularly if it faces forward - not an RAI issue) and this water needs to be able to drain away in the airbox.
i didnt touch the valve, might do one day? from what i remember i thought it was in a different chamber, or had a wall between it and the filter, like a dam wall?

Garry

cheers phil

[101RRS]

Phil -Thanks for that good information. Was intending to wrap the old hose with that waterproof tape that moulds on bonds to itself but if the right size hose is freely available then that is the way to go.

The secondary chamber in the airbox does have wall/dam on it which is about 2" high. Not likely to be an issue when actually fording but if you came to a stop, even for a short period of time, water would come in that hole and fill the little chamber and overflow into the bottom of the main chamber and slowly fill up the airbox (whether there would be an air pocket at the top stopping water going into the engine I am not sure - you would have to plan for the worst and hope for the best.

Not sure why they designed it like that - I assume that it is to help water exit if the little valve in the main chamber stays closed and lets water out if it has been sucked in via the external inlet in the guard.

Cheers

Garry

[discojools]

After speaking to a couple of LR specialists I have decided to be boring and go for a Safari as it comes with a replacement for the porous pipe and saves quite a bit of hassle, uncertainty and is a better price. Garry, I could not see the rubber one way valve in the main airbox.. Will have a look again tomorrow. They may have deleted it on newer cars.
Thanks for the advice anyway.

[Graeme]

Can anyone confirm that the RAI for the 3.0 can be fitted without purchasing the extra fitting kit? Duckworths UK are still saying that the fitting kit is required but is that because the 3.0 is different or just because LR list it as needed?