Spacesaver And 2way Lsd

[whistla]

I was in a situation where my rear tyre went flat and i had to use the space saver to limp it back home.

I am running a KAAZ 2way LSD and have 18" (265/35/18).

Now to state the obvious, one side was the 18" and the other side had the space saver...

There was a constant need to adjust steering position to counter steer the force on the back under acceleration.

Could this have somehow damaged/forced/overheated my diff?

(about 20mins of 60kph driving, only 2-3 intersection turns)

[morlock]

Why do you ask? Have you fixed the tyre and notice problems with the diff?

[Duncan]

What size is the space saver? I'm really surprised it was a different diameter overall? The fact your regular wheel is 18" doesn't matter its the size (height) of the tyre that makes the difference.

[SLY33]

with 18inch wheel you are going to have an overall bigger diameter than the stock 16incher. The tyres you choose can be close, but generally still larger rolling diameter. My 19's had superlow profile rubber on them and they were still way larger than the stock 16inch rolling diameter!

[whistla]

I havent replaced the wheel yet as i need a replacement (the object on the road broke my rim).

So i havent had a chance to "test" if its ok, i am just concerned for the diffs well being

The rolling diameter of the 18 would have been SLIGHTLY larger than the space saver.

[wilch]

Most car manuals (of cars that have LSD's, staggered wheels front ot back, and a space saver), generally say that if one of the rears goes, replace it with one of the front tyres and put the space saver on the front so as to minimise the damage done to the LSD

1. Jack up front.

2. Remove front tire, replace front tire with the space saver.

3. Drop the front down.

4. Jack up the rear.

5. Replace the damaged rear with the front tire removed in step 2.

6. Drop the car down.

7. Limp home.

Sure the fronts are smaller than the rear tires, but they're bigger than the tiny space saver.

Getting back to your original post though, if you went home really slowly, not accelerating hard etc, then I'm guessing your LSD would be ok

[whistla]

Most car manuals (of cars that have LSD's, staggered wheels front ot back, and a space saver), generally say that if one of the rears goes, replace it with one of the front  tyres and put the space saver on the front so as to minimise the damage done to the LSD

1. Jack up front.

2. Remove front tire, replace front tire with the space saver.

3. Drop the front down.

4. Jack up the rear.

5. Replace the damaged rear with the front tire removed in step 2.

6. Drop the car down.

7. Limp home.

Sure the fronts are smaller than the rear tires, but they're bigger than the tiny space saver.

Getting back to your original post though, if you went home really slowly, not accelerating hard etc, then I'm guessing your LSD would be ok

<{POST_SNAPBACK}>

haha its ok, i dont need a crash course on changing wheels

It only dawned on me that i should have swapped the front to back after i took off and noticed what was happening.

Along with having an awful low car and skirts that minimise the ease in jacking up a car with a normal boot jack sort of didnt make me want to start over again.

Its all good *thumbs up*

Thanks for that tip though about the manufacture manual suggesting that, id say its a good point.

[PHATR32]

i always though it was bad to put a space save on the front, cause the front takes the weight when you brake etc. so in an emrgency brake youll kill your self.

you shouldnt be driving on the space saver anyways, its only to get you home or to the nerast tyre shop.

steve

[whistla]

you shouldnt be driving on the space saver anyways, its only to get you home or to the nerast tyre shop.

steve

<{POST_SNAPBACK}>

(o_0 )

...which is what i was doing

[Cubes]

I did a diff in like this. The size difference was bugger all, I had a stock 15" in as the spare, the wheels were 16" 225 50 16's.

It wasn't a 2way mech or a vis skyline diff. It was a cone type lsd VS v8 IRS diff.

I fitted the spare tyre, under acceleration the car would pull one way, under braking via gears the car would pull the opposite. Got home got the tyre fixed, fitted it up. Only drove 15km's.

I first noticed the diff the very first intersection after I had fitted back up the fixed tyre, I had already started to turn and was rocking back and forth on the clutch. The arse end had a slightly wobbly clunk feel. Pretty much what a 2way mech feels like. It also was no longer LSD but rather a single spinner, something that it had never done before.

1 stuffed diff. ~$1100 or there abouts for a rebuild.

Edited August 24, 2005 by Cubes