[Philbilly]

Tell me, when a Vitara (93 model) is in 4WD Low, when you push the clutch in should it roll just as easy as when it is in gear but not in 4wd? I ask as mine near seems like you have the handbrake on when it's in 4WD and you try to roll it with the clutch in. It rolls really easy when in 2WD, clutch in, and in gear.

The car hasn't been run for a fair while in 4WD (like maybe a year), and when I done a few laps around the back streets it seemed to loosen up a bit- but not totally free-running if you know what I mean. So maybe it's just a little stiff and will loosen up with more use?

It's my first Suzuki so I don't know if this is normal...

Cheers,

Phil

[Teracis]

Does it do it in 4wd high?

[SuziBlu]

mate, same deal here, I always reverse up n out me drive in low range, easy as, but when I hit the black top and put me foot on the clutch, its like I have just hit the brakes.

Free wheeling hubs are out.

Never really bothered me, spoz there is an answer, so will watch here if someone can shed light.

It does it in ahead, but its reverse that is so very noticable

I also notice that turning tight in the vitara in dirt against doing it in a sierra, the vitara chew the dirt bad on the front outside wheel, be it a right or left hand turn, I have 3 mates with vitaras that come to my place in, they all do it, neither of the sierras I have do ?

It appears to me that the fronts do not turn parallel to each other.

Meh, its just a vitara.

[FullyZooked]

Are you driving on the road with 4WD low?

Transmission wind up could be the issue?

I know when im in 4wd low and press the clutch in the car rolls as normal.

[Teracis]

My thinking is, that in high range the coupling between the wheels and the gearbox is close to the same, and then whatever gear you're in makes the clutch spin when you're rolling with the clutch in. This is not super hard, even in lower gears in high range.

Now in low range, the reduction is far far greater, and therefore for the same gear in the gearbox (be it 1st or reverse) the wheels are turning which is multiplied by the transfer a lot more and the gearbox which makes the clutch want to turn way faster. This small amount of friction required to turn the clutch with the engine, becomes far greater as holding torque at the wheels due to the reduction in the transfer and thus it seems to not want to roll easily.

Just going over it in my head and that's how I see it, I've never tried to turn the input end of a gearbox by hand though so I don't know how hard it is, but regardless of how hard it is, with enough reduction, trying to turn the input by turning the output is always going to be harder.

If I've confused anyone let me know.

[Philbilly]

Teracis wrote:

Does it do it in 4wd high?

Just took it for another blat and in high range 4WD it seems a tad looser than low. Mucked around in low range again (just seeing how it would roll after building up a little speed and pushing the clutch in) and it seemed to roll a lot better this time. Not totally free, but not like having the handbrake on either. Dunno, maybe it's normal

Suziblu,

I know what you're saying, though mine isn't that tight I don't think. But still get that lightly touching the brakes feeling.

I did notice it gets worse when slow rolling (well, trying too..) around a corner. Again, maybe that's normal too.

"Meh, it's only a Vitara"

Cheers,

Phil

[Philbilly]

FullyZooked wrote:

Are you driving on the road with 4WD low?

Transmission wind up could be the issue?

I know when im in 4wd low and press the clutch in the car rolls as normal.

Yeah, I was on the road. Should that make a difference?

Cheers,

Phil

[Philbilly]

Teracis wrote:

My thinking is, that in high range the coupling between the wheels and the gearbox is close to the same, and then whatever gear you're in makes the clutch spin when you're rolling with the clutch in. This is not super hard, even in lower gears in high range.

Now in low range, the reduction is far far greater, and therefore for the same gear in the gearbox (be it 1st or reverse) the wheels are turning which is multiplied by the transfer a lot more and the gearbox which makes the clutch want to turn way faster. This small amount of friction required to turn the clutch with the engine, becomes far greater as holding torque at the wheels due to the reduction in the transfer and thus it seems to not want to roll easily.

Just going over it in my head and that's how I see it, I've never tried to turn the input end of a gearbox by hand though so I don't know how hard it is, but regardless of how hard it is, with enough reduction, trying to turn the input by turning the output is always going to be harder.

If I've confused anyone let me know.

So basically you're saying there should be more resistence simply due to the gearing? If so, that makes sence, and that would explain why in high 4WD it rolls a fair bit easier. Though Fullyzooked's (Vitara?) rolls the same in 4WD or not

Thanks for the detailed reply

Cheers,

Phil

[atari4x4]

4wd on Tarmac is a recipe for disaster, it should only be engaged in low traction situations like gravel.

I can notice a difference when I leave my front hubs locked in on the road & in 2wd, especially fuel economy.

[Philbilly]

atari4x4 wrote:

4wd on Tarmac is a recipe for disaster, it should only be engaged in low traction situations like gravel.


I can notice a difference when I leave my front hubs locked in on the road & in 2wd, especially fuel economy.

I went like 300 meters. Though I hear what you're saying.


Ok, but should the car roll the same in 4WD, clutch in, as 2wd, clutch in?

Cheers,

Phil

[SuziBlu]

Not really, you are turning an extra diff and axles when 4wd engaged, so greater resistance, not a real lot in it tho.

This is why you use more fuel when the hubs are in, even if its in 2wd, greater resistance, more to turn.

[atari4x4]

there will be some increase of resistance due to turning all the drivetrain from front CV's & diff, front tail shaft & the 4wd side of transfer case.

as an example 4wd's are very difficult to manoeuvre around a workshop buy pushing when in 4wd & trying to turn.

[royce]

No it wont, you are pushing twice as much stuff around and the reduction in the transfer makes the box turn twice as fast

[atari4x4]

even in high range?