New Hilux slipping down driveway

Hi Roachie, Thas how I have it parked now, but I still feel that in 2WD it should not creep backwards like that.
Cheers.

Yeh, I guess it depends exactly HOW steep your driveway actually is and what the weight of the hilux is too (although it sounds like it's probably bog-stock if it's new). They don't need time to "break-in" as far as this aspect is concerned....in fact if anything, the motor should be at it's tightest when new.

The grade of the slope is the biggest factor. I got a real surprise a few years ago when doing a driver training course at Spear Creek (near Pt Augusta). One of the exercises was a "stall recovery". I was driving up this quite steep hill in my (then) 4.2TD Patrol which was heavily weighted with accessories. The idea was to simulate a stall whilst driving up this hill. I was in low range 1st gear. I stalled the engine (as required) and applied the foot brake & handbrake, switched off the ignition, moved it into reverse gear, disengaged the handbrake and gradually released the foot brake. This should have left the vehicle "hanging" safely on the engine-compression (engine is still off). What surprised me was that, even in low-range reverse gear, the engine started to loose compression and did small "lurches" down the hill. It was safe enough as I still had the brake pedal covered; but totally unexpected. I ordered a set of Mark's Adaptors low-range cog replacements the next day....and they now reside in the transfer case of my Chev-powered Patrol for the same reason.

"low-range 1st gear....heaps more compression effect"

No - compression effect only works at speed, otherwise you would not be able to turn the motor over slowly with a spanner on the front nut to check the tappet clearances. At rest the only thing holding you on a slope is the friction in the motor and drive train - the more of that friction you have the higher the fuel consumption so we don't want too much of that do we. You will always have some leakage past the piston rings, even if it is only through the few thou gap between the two ends of them.

The more the motor is run in, the lower the friction, so the worse that creep will be. If your drive is that steep maybee you should have a chock that you can place loosely behind one of the wheels for safety - or trade it in for an automatic so you can put the gear selector in park.

PeterD

PeterD

? .....engine at top dead centre may assist in some situations...but i thought it was the gearing ratios when in low Which May stop it from rolling backwards or frontwards

Its got everything to do with compression and gearing ratio
roachiw would have had the compression but the patrols dont come with low range (not a real one anyway)
the new Hilux has the ratio but not the compression new crd come with lower compression

Yeh, the Patrol's 2.02 low range is a bit of a weakness, but nothing that about $1200- can't fix.

I now have the 2.86:1 low range (43%)......could have gone for the 3.743:1 (85%), but thought that would be just too much reduction for my needs.

Fishing for a bit of a bite and got 1
the 75 series had the same low range but didnt seem to be an issue
Probably because of a low 1st gear?
I really notice the difference in low range gearing with underground utes between a 75 and a 79

Onya Davoe....good cast mate.... got me hook, line and sinker!!! hohohoho

well there ya go...i dont know anything

Hi, Olcoolone its A TD 4x4 Hilux. The drive way would probably be around say 30-35 degrees where the ute is parked.

cheers.

Does it creep back in lumps or is it smooth? If it's smooth the clutch may be slipping??

Notso,
It more of a creek back in lumps situation.

If the hill is steep it is a problem with most vehicles except automatics (if you park them in park.)

PeterD

why?
weather you are in 1st or reverse or forwards or backwards it will make zero difference as your motor will quite happily turn backwards against compression if its not going
to be pedantic you are always better off using reverse as it is usually the lowest gear

Not true unfortunately Daveo.

While it may be true for some Toyotas, Some manufacturers spec a reverse gear ratio that is between 1st and 2nd. So 1st is the lowest gear. In many Toyota's 1st and reverse are the same ratio.

http://www.marks4wd.com/vehicle-information/lc-fj40-info.htm

In the Patrols for instance 1st is 4.2:1 and reverse is 3.9:1

http://www.nissan.com.au/patrolcab/specifications.asp

Compression does aid staying on hills but you need to remember it will creep. We uitilise this compression or engine braking when we teach a key start stall recovery, it utilises all methods of braking, compression, hand-brake and foot-brake.

For those who don't know what a key start stall recovery is, it would be worth checking out a good 4wd course, it may save your life.

Cheers

Dave O

i guess i was referring to the hzj utes as it is what i drive normally and as i said it was being pedantic because there wouldnt normally be enough in it to make a noticicable difference
certainly the rest of the statement is true.
after an identical staterment to a simular question in the name of science i parked a ute on a steep hill high range 4x4 and weather it was is 1st or reverse it still rolled back doing 1 "chug" every 13 seconds

as to weather a vehicle will creep in any short term time frame depends on factors such as gearing, steepness of the hill, weight of vehicle.
certainly when we did the training for work none of the tojo utes crept

Yes I've noticed some will creep on my training hill and others won't.

hahahahaha, I think he's been left at the kiddies creche over the xmas break....... even his mother needs a break from him occasionally.....

Lucy, How your post helps I will never know.

The whole things got me stuffed !!, A decent handbrake will hold anyway, if the handbrake dosen't hold and its in low range first or reverse and still creeps then to me the handbrake is useless or the driveway is so steep the weight of the vehicle is taking over, and the thing is sliding! run for your life.....lol.

Cheers Axle

Axle, The example I was giving is when its in 2wd 1st gear,it slowly creeps back without hand brake ( I always apply brake) but I am wondering if it should do this, me thinks not. I am keeping it in 1st L4 and there is no creep.
Cheers.

seb, meet Lucy: often the fingers start typing WELL BEFORE the brain is engaged.

Dio, no damage nothing happened ,read the post properly.

Chris maybe your a little bit THICK read my post again. & I always use the park brake, its something that happened before I applied the park brake the ute did not roll out of the drive way. What the hell has one of your stupid mates leaving a ute in D with the brake on got to do with my post.
SNAPPER HEAD.

Are these not your own words????


"I have a steep driveway that I park on & just noticed that if I drive up & leave it in 1st gear ( switched off) it will slowly continue to creep back down the drive, unless park brake is engaged"

You do redeem yourself with this
" I know the brake should always be applied but should it not be able to hold in 1st with out the brake"

Mate all i am saying is that there are people out there who will do this! I dont want you to be in court because you couldn't be bothered to put hand brake on because "My other 2wd ute never did this".

The weight factor comes into this the more weight the more pulling force applied to running gear hence slippage!
Newton's first law! "for every reaction there's an equal and opposite reaction"

Sorry if i was a bit harsh but i read it out to my wife and she also picked up on it!

Oh No i am not thick but i do call it how i see it!!!

Chris, Yes they are my words. I still don't see where I have said that I actually park my ute this way. In a follow up I also said.

The example I was giving is when its in 2wd 1st gear,it slowly creeps back without hand brake ( I always apply brake) but I am wondering if it should do this, me thinks not. I am keeping it in 1st L4 and there is no creep.
Cheers.

Maybe I should have made my post more clear.
I was simply testing it out to see if it held, & yes my petrol 2WD never did this does not mean it was parked without the handbrake. I always park any vehicle in gear & parkbrake applied on flat areas also,Looking at the drive this morning it may not be as steep as I first mentioned. I don't trust parking brakes, just like any other part of the vehicle they can fail, hence my concern.
Cheers.

Seb, WHO CARES? JUST USE YA HANDBRAKE. Gee, why are my tyres flat, but only on the bottom. I thought they were supposed to be round?