Anyone drive 4x4 - (NB)

[PGD]

Hi guys, just bought a Nissan Navara and the book says, where fitted you should have either "manual free wheel" hubs or "automatics".

I've had a look at my hubs and appear to have neither, so what type of hubs do I have and what implications does that have to driving in 2H, 4h or 4L ?

Cheers

Peter

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[hlb]

If you have manual hubs you will have a screwy turny thingy on the wheels. If not it's auto. With all four wheels locked up you tend to go straight on at bends, so dont try this at home!! Select wot drive you need for the conditions. Mostly 2H. only 4L for towing massive weight over plowed field....../forums/images/icons/smile.gif

<hr width=100% size=1> Flags Solly MFBR</font color=red>
Haydn

 

[britemp]

You will have automatics on a Navarra.

First thing you need to know is that 4WD is only for slippy surfaces, ie mud, sand, ice etc but not wet roads. If you use 4WD on a surface with any grip the transmission will wind up and break fairly quickly. The system is identical to the old Series Land Rover transmissions from years ago with no centre differential like the modern ones to allow you to use 4WD on tarmac, so be warned.

The free-wheeling hubs are designed to allow the front axle to free-wheel when in 2WD - this is designed to save a little fuel, but it's marginal. The upshot with auto hubs is that when you select 4WD they will automatically lock to allow drive to the front axle. They usually take several revolutions of the axle to lock, so select 4WD a few yards before you hit the sticky stuff or you might still be in 2WD before they click in. Likewise when you come out of the mud and select 2WD they should unlock, but in practice they sometimes don't - reverse a few yards and they will unlock.

I think all this is correct - it's 2 years since I drove one so it's all subject to my increasingly vague memory! /forums/images/icons/smile.gif


<hr width=100% size=1><< Sig removed at request from Kim Hollamby - he thought it might scare forumites! >>

 

[Talbot]

Recommend a one or two day course with <A target="_blank" HREF=http://www.borda.org.uk/>BORDA</A> (British Offroad Drivers Association) great fun, and you learn a lot about driving a 4x4 in interesting situations!

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[britemp]

Good advice - or just go along to any AWDC event - have a play and ask plenty of questions!

<A target="_blank" HREF=http://www.awdc.co.uk/>http://www.awdc.co.uk/</A>


<hr width=100% size=1><< Sig removed at request from Kim Hollamby - he thought it might scare forumites! >>

 

[PGD]

Hummm , cheers for all the advice but on the Navara with auto hubs I've seen they say Automatic on them (hubs), mine don't, they have no adjustment , just shinny Nissan covers, 6 bolts to hold on the wheels and a noraml looking central black dome, hub looking thing.

I was just a bit worried as it says not to drive in 4H or 4L without the correct setting and to drive in 4x4 for a few miles each month to lubricate all the bits.

The other bit that worries me is that the book says "Where fitted" so it implies neither will be / can be fitted and you end up with something else ??? hence the question, what else ??? I have neither that matches the description.

But it drops into and out of 4x4 quite happily and you notice the difference.


Think I will have a word with local dealer that sold me the car - sorry truck /forums/images/icons/wink.gif and the local 4x 4 club.

And yes, a quick training course would be worth while, I know a few bits but not enough to start towing the boat which I want to do.

Cheers again

Peter

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[Kawasaki]

what year is the car? Is it UK or an Import? Is it auto or manuel .Diesel or petrol? Give me the info, last 15 years selling and teaching 4wd. Might be able to help.

<hr width=100% size=1>50

 

[plombier]

Peter, I thought the Navara's had a limited slip diff which allows them to use FWD on tarmac/hard surfaces. I was thinking of getting one to replace my old long-in-the-tooth Fourtrak which does have manual hubs.

As Kawasaki said post the details of the beast please.

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[PGD]

Ok, 03 plate 20 k on the clock, diesel, 2.5 l, all Navara's are. Manual box 5 speed, with 2H, 4H and 4L can drop in and out of 2H and 4H at up to 50 mph - cool!!! Double cab pick up configuration.

Don't think she's an import, was new at first registration, one owner only.

Needs new head unit for Panasonic radio CD - any ideas, last bloke lost it /forums/images/icons/frown.gif

Peter



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[britemp]

If you are in any doubt as to what type of hubs you have, just select 4WD and drive on a loose surface for a hundred yards or so a month and whatever you have will get a regular lube!

Just out of interest, how heavy is your boat and trailer?

<hr width=100% size=1><< Sig removed at request from Kim Hollamby - he thought it might scare forumites! >>

 

[britemp]

The one I drove had just a part-time 4WD system so no road use unless Peters is different spec. A limited-slip diff would make no difference as that is an axle device designed to reduce cross-axle slip. To allow 4WD on hard surfaces you would need a central diff that is either manually fully lockable or a viscous diff capable of fully locking automatically - a device allowing a limited amount of slip would be ineffective in an inter-axle role, rather than a cross-axle one.

. . . . . .takes off off-roading anorak and hangs it up! /forums/images/icons/smile.gif


<hr width=100% size=1><< Sig removed at request from Kim Hollamby - he thought it might scare forumites! >>

 

[PGD]

Ref the boat, Fairline Holiday, weighs 1.85 as designed, + 50 gal diesel + kit + 12 gal water so when we did the props we worked on 2.25 te wet, plus trailer say 2.5 - 2.73 te.

Navara will tow 3 te hence the purchase. Was planning to rent / borrow the trailer.

Cheers

Peter


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[PGD]

what the..... post flies over head /forums/images/icons/smile.gif

No I do get the drift. Ha !



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[plombier]

Don't worry, Peter - I know what Britemp is talking about. Sorry B - got me drives crossed there for a while. My FT has man. hubs which could only be used on the soft for cornering. On the hard in fwd - twang, crunch, grind, etc. etc.!!!

I was under the (mis)aprehension that the Navara could run in fwd OK on the hard.
However, I do believe that it is the most powerfull of the truck-type FWD's towing up to 3000kg which is why I was contemplating one.

Peter, is yours a turbo diesel?

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[britemp]

I wasn't implying you'd buy a motor that wasn't able to tow your boat, I was just interested to hear the actual weight of your boat as having seen one, they look heavy! /forums/images/icons/smile.gif


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[Jools_of_Top_Cat]

try ebay, I bought my CD changer from there, though I did stipulate proof of purchase from the seller.

I have a subaru legacy, AWD. If you have no controls maybe you have a similar setup. The AWD system means the computer decides how best to regulate the power. On the road I will be generally 50-50 to the front wheels. Though if a wheel starts slipping it will move power to the other three and so on.

I once got 3 wheel bogged down in a mushy field while trying to turn the car around on a farm lane. Only one wheel on the tarmac lane. Well SWMBO had got out while I drove the car back out. She said only the single back wheel was turning, which meant the car had put 100% into the single wheel.

I have to say, this car grips like on rails, there is no oversteer as some 4x4. You do not feel motorway puddles, there is no pull. I only wish I had bought one sooner. Big estate too!

<hr width=100% size=1>Julian

<A target="_blank" HREF=http://www.topcatsail.co.uk>

</A>

 

[britemp]

I much prefer the Navarra to the Mitsibushi or Ford ones - many of the import companies will supply a 200bhp version of the 2.5 turbo-D instead of 133! The new Isuzu crew cab pick-up is worth a look with a 3.0 turbo-D.

Having said that, none of them are a match for a Land Rover Defender which can tow 3500kg or 4000 with a coupled brake setup and be in 4WD all the way from your drive to the slipway and back - well worthwhile with an all up weight 6.5 tonnes! /forums/images/icons/smile.gif


<hr width=100% size=1><< Sig removed at request from Kim Hollamby - he thought it might scare forumites! >>

 

[britemp]

I used to run a Scooby-Doo Imprezza turbo - great fun!

The Subaru AWD system isn't actually controlled by a computer - it's got a centre viscous locking diff and a rear axle viscous limited slip diff, all mechanical.

When you were in that muddy lane the centre viscous detected no traction at the front axle and transferred drive to the rear axle. The limited-slip rear axle then re-directed the torque from the line of least resistance (the spinning rear wheel) and to the only wheel with traction. You were lucky it was a rear wheel with grip - the front has no limited slip so if only one front wheel had grip you'd still be there! /forums/images/icons/smile.gif

Things like the Subaru would suit 90% of big 4WD users much better than their big off-roaders, but I guess it's fashion!

Better take that anorak off again, it's already hot in here. . . . . . /forums/images/icons/wink.gif


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[PGD]

Hi no worries about the question, didn't mind. It's a great truck just haven't worked out the 4x4 bits yet.

Doesn't have one of those progressive things Jools mentioned, you have to do a gear shift to get 4x4.

Peter

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[PGD]

hi yup 2.5 l turbo diesel

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