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help me my supra jumps when turning


Guest hodgson1234

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Guest hodgson1234

I have just purchased a 1994 supra import 3.0litre non purchase

 

it has 19" alloys and coil overs and its rock hard ride but in a straight line the car pulls great the clutch doesnt slip but when you turn right or left no matter what speed the car jumps the back ends seems to slip and jump up and down especially if you are stood still at a junction or pulling out of a car parking space and you turn left or right it really jumps?

 

when you put you clutch in it stops jumping one garage says its the coil overs and alloys they are too big but i think its something bigger please help me!!!!!!!!!!!!1

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Guest hodgson1234

yea i meant non turbo sorry!!

 

but the car drives great the diff doesnt make a noise it never slips and in a straight line its great it only does it going left or right!!!

 

thank s for the help can i get the diff re cond then

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Get a friend to watch the inside rear tyre as you turn, at walking pace, on full lock, in a circle. If the inside wheel is skipping (trying to turn faster than it needs to), you have a tightly set plate type, none stock, LSD. Get used to it or buy a stock type, or a less aggressively set plate one, like a TRD. There's almost certainly nothing you can do except perhaps use an LSD additive. All this assumes it's the REAR tyres that are skipping. is there also a loud banging / rattling as it happens? At above 30 MPH, on anything other than a tight hairpin bend, the LSD should be all but inaudible thosugh, I see you say at ALL speeds.... ????

 

The wheels are too big, as well ;)

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Guest hodgson1234

the dif doesnt knock or bang but when you set of from stand still with full lock on the car really jumps badly as if it cant grip i think its def a lsd. it also does it when you reverse in a straight line as if the cogs are slipping?

 

the only way i can describe it is that its like the abs is stuck on?

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IF your SUPRA is an Auto then the push from the rear wheels, which is always present, can cause sliping on full lock on wet or on salty roads. Mine started to do this when I changed the tyres which don't grip as well as the older pair. I know they are less grippy because the rears also have less grip which is noticable on WOT. Its like ABS pulsating effect.

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hard core diff? im new to all this please expand

 

He means any kind of un-shitty diff.. i.e. why would someone put a specialised aggressively-set plate-type lsd on a non-turbo car.

 

I'm not suggesting n/a's are shitty :blink: just interpreting for you ;)

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He means any kind of un-shitty diff..

yeah, 'hard-core' as in 'men-only', a diff that doesn't really diff:d

Totally inappropriate if your mother needs to drive to the stores, but could shave seconds off each lap on a track if you know what you're doing.

Race-only stuff.

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Guest hodgson1234

the faster you go ie up to 30mph the better the car is if i pull away from a junction and go left or right the back wheels jump like they get no grip but if i put the clutch in its fine the car goes round smoothlly no jumping. the slower you go the worse it is especially at walking speed but if you let the clutch of and give it no revs so the car pulls away by letting the clutch out the car doesnt jukmp its weird. i know the car has an upgraded twin plate hks clutch dont know if that helps at all. normal driving i.e 30 upwards going left or right the car is very smooth in a straight line its A1 and pulls very well.

 

I think the car has been messed with in japan and i will have to live with it or sell it i think thank you all for your help im sure the car has LSD?

 

regards

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It sounds like its a clutch problem, I have changed 4 HKS twin plates, either for my own uprated stock clutch, or a Giken twin plate package, as the owners (quite rightly, IMO) couldn't live with the dradful clutch judder. The OS Giken twin plate in my Skyline drives almost like a stock clurch, my uprated single platers drive exactly like a stock clutch. Unless, by some miracle, you have got all the considerable amount of bits that are binned when fitting the HKS clutch, it's pretty expensive putting another clutch in a MKIV. I keep alll the required bits on the shelf though.

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