flat out

thanks for looking i have a xr3i with a rs turbo engine in it. the gear box in it has yollow writing on it so it,s come from a scrap yard at some point.
Is there any way of knowing if it,s just a standard xr3i or a lsd gear box with out taking the box off. if i do have to to take the box off ( HOPEFULLY NOT) what do i look for.
thanks again
chris

JesseT

Put the gear in neutral and jack one front wheel up from ground. Now try to spin by hand the wheel as fast as possible. If you can get it to spin a round in less than 4 seconds, then you don't have an LSD.

flat out

thanks alot mate i will give it a try. TOP MAN
cheers chris

vroooom ptssssh

Im sure you gotta have it in gear.

jack one wheel off the ground and select first gear, wheel in the air shouldnt turn much at all before the diff locks.

that works for my car and is how I got told to check it.

other option is to do a burnout and see if both wheels leave a black line

PeterRST

iTrader: (1)

But that way you won't be able to turn the wheel because you'd have to turnover the engine aswell. Neutral sounds right to me.

Alex_86

iTrader: (2)

jack both front wheels up in the air and turn one of the wheels one way,the other one should then go the same way


yes have the car in Neutral

PeterRST

iTrader: (1)

I think it should go the same way. You shouldn't be able to turn one wheel forward and one wheel backwards at the same time if you have an LSD.

Alex_86

iTrader: (2)

yes meant the same way!

PeterRST

iTrader: (1)

Another way I can think of testing: Thrash it through a nice and narrow 90 degree corner. If it doesn't understeer into a lamp post, tree, wall, etc. you'll most likely have an LSD fitted...

Alex_86

iTrader: (2)

ops, i did not have one

PeterRST

iTrader: (1)

Awaiting "breaking S2 RST" thread in the parts section...

JesseT

No no no, you all make this too complicated and unreliable. It's so simple to jack one wheel up in neutral and just "feel" the tyre turning. With no LSD it will spin at whatever speed you spin it with. With LSD the wheel has much resistance and no matter how much force you use to turn it, it just turns very slowly in a sticky way.

Alex_86

iTrader: (2)

what is so complicated and unreliable with jacking both wheels up and se if they go the same way?

JesseT

Well, it's twice the work and with no LSD they can also go the same way.

Alex_86

iTrader: (2)

twice the work? just set the jack under the car, roll bar f.eks and turn the wheel... it takes 1min. andnot on the lsd boks to the rst

flat out

thanks for looking boys but im in a bit of a knot now. i liked the idea of booting it thru a bend . but the cars not running for a minute it,s my project car. can enyone be 100% sure which one is right coz theres a couple of different ways up there.the thing is i can get my hand on a lsd box chaep off my mate and i want to snap it up before he sells it.
thanks again
chris

Grandad racer

always a good idea to have a spare gearbox, if your mates got a cheep one id grab his arm off. s2 turbos are prone to eating gearboxes!!

PeterRST

iTrader: (1)

Do what JesseT said!

To check whether the one you're about to buy is fitted with an LSD just look through the hole where the driveshafts go. If you can see straight through it it's got an LSD. If there is a bolt in the way it hasn't...

flat out

Cheers mate that sounds like the easiest way to find out. I have to put a new driveshaft in coz the one shaft has snaped. I may as well rip the other side out to have a look. top advise
thanks
chris

PeterRST

iTrader: (1)

I guess you won't need to take the other one out aswell.

Just for the record:

BC gearbox without LSD

flat out

cheers mate it will save me some time thank alot.
chris

luxembourgrst

is it normal to have a little play between and a knocking noise if turning the Wheel forward and then backwards…?
thank you

Caddyshack