Outer Limits 4x4 Board

Micka wrote:In the case of the MK, all available power will be sent to the rear diff if the front hubs are not engaged, so be carefull doing this. It would be wise to limit the throttle input as any sharp stomps on the go button could see your rear diff meet its maker .

OK. So how is this scenario any different to driving an MK in 2wd?

Either way, all available drive is going to the rear diff - and the rear diff doesn't care if the front prop shaft is turning or not.

Scott

Days of our lives move over here comes OuterLimits.

I just spoke to DR Phil and he will be on here later tonight to help us. He would be here earlier but he is at MereMale trying to un confuse the poor bloke.

LudaCris

ludacris wrote:Days of our lives move over here comes OuterLimits.

I just spoke to DR Phil and he will be on here later tonight to help us. He would be here earlier but he is at MereMale trying to un confuse the poor bloke.

LudaCris

Oprah will be on later to console those poor souls that have not realised that it is OK , with care to use low range with front hubs unlocked.

just buy a 40 and mod it for low 2wd.

i've done the same thing as the land rover owner in this thread, put my 40 in 4wd to work on it and forgotten and driven for miles... got a wierd chirping rumble noise which made me wonder what was going on...

but that case went strong for another year till someone drove it 150 k's with no oil

ludacris wrote:Days of our lives move over here comes OuterLimits.

I just spoke to DR Phil and he will be on here later tonight to help us. He would be here earlier but he is at MereMale trying to un confuse the poor bloke.

LudaCris

ludacris
As for Days of our lives, never stoooooooped that low so don't know what to compare to

But what worries me more is that u know how to get into contact with Dr Phil, I'm not gonna ask y u did or still do for But can't understand why u sent him to my place tho
Me just glad u didn't send Dr Feelgood, as my wife feels that. oooooops did i say that out aloud

Mere

NJ SWB wrote:

Micka wrote:In the case of the MK, all available power will be sent to the rear diff if the front hubs are not engaged, so be carefull doing this. It would be wise to limit the throttle input as any sharp stomps on the go button could see your rear diff meet its maker .

OK. So how is this scenario any different to driving an MK in 2wd?

Either way, all available drive is going to the rear diff - and the rear diff doesn't care if the front prop shaft is turning or not.

Scott

Micka is right. The reason the manufacturer states not to engage low range without having the front hubs locked is because of torque stress on the rear diff/axles etc....

Lets use some hypothetical values. Just say low range is twice the ratio as high range, so therefore double the output torque is available at the rear diff when low range is selected in any one gear. So, without engaging the front hubs, the rear diff will have to be able to handle twice as much torque, because the front diff is not sharing some of the extra stress.

As Micka said, it wont be a problem providing you don't abuse the throttle, i.e. foot down or jerky motions. If you use all available power, then you will break something, because the manufacturer originally designed the running gear to handle the increased torque loading over 4 axles, not 2.

Oooops . I did not relise I was letting the tongue slip. It is Dr Patient privledge to keep my private Problems secret So you will never know.

ISUZUROVER wrote:I once drove 30km to work with my landrover (series - part-time 4x4) in 4x4 high range. I had put it in 4hi to work on it and hadn't noticed when I jumped in to drive to work - only noticed when I was parking at work because of the steering feedback. The whole trip was on ditumen, including some highway driving. That was about 7 years ago and the T-case is still going strong.

And before anyone asks, my landie doesn't have FWH.

I drove from Bathurst to Windsor in my Rangie towing the Buggy comming back from W.E.Rock with the Centre Diff Lock still engaged. The light was not on and the stick was in the disengaged possition. Not sure what caused this problem yet but i removed the front shaft in Windsor and drove 2 blocks and then the centre diff dis-engaged so then drove back to Bris with the Centre Diff Lock engaged. Driving from Bathurst to Windsor caused no real problems and was only noticable turning tight at slow speeds. I am still driving it around with the front shaft removed. Have to pull the transfer out to find out what caused the trouble.

carts wrote:

NJ SWB wrote:

Micka wrote:In the case of the MK, all available power will be sent to the rear diff if the front hubs are not engaged, so be carefull doing this. It would be wise to limit the throttle input as any sharp stomps on the go button could see your rear diff meet its maker .

OK. So how is this scenario any different to driving an MK in 2wd?

Either way, all available drive is going to the rear diff - and the rear diff doesn't care if the front prop shaft is turning or not.

Scott

Micka is right. The reason the manufacturer states not to engage low range without having the front hubs locked is because of torque stress on the rear diff/axles etc....

Lets use some hypothetical values. Just say low range is twice the ratio as high range, so therefore double the output torque is available at the rear diff when low range is selected in any one gear. So, without engaging the front hubs, the rear diff will have to be able to handle twice as much torque, because the front diff is not sharing some of the extra stress.

As Micka said, it wont be a problem providing you don't abuse the throttle, i.e. foot down or jerky motions. If you use all available power, then you will break something, because the manufacturer originally designed the running gear to handle the increased torque loading over 4 axles, not 2.

What he said.

Micka