too much wheel spin
too much wheel spin
Author
Discussion

cerberarno

Original Poster:

88 posts

188 months

Wednesday 2nd February 2011
quotequote all
Is there a power lock on my 4.5 1998 or what ?

Today loads of wheel spin on the inside , didn't feel that earlyer...

I was playing a bit these days on the wet .... Did I break it ?


boss1uk

260 posts

203 months

Wednesday 2nd February 2011
quotequote all
Iv got hydrolock on my 99 4.5. Think they had lt slip anyway

Luckyone

1,091 posts

261 months

Wednesday 2nd February 2011
quotequote all
It depends on your road speed, the diff on the 4.5s works a bit like a clutch in an automatic. The faster the whole unit is spinning the more it locks the diff, you have to be doing about 70 for it to really work fully. This is part of the reason people get caught out changing lanes on the motorway this time of year.

So if you are going quite slowly & plant our right foot it will just spin up the inside wheel & do nothing else obvious (it actually transmits more torque to the other wheel, but it will never spin the other wheel at lower speeds), unlike a normal plate type LSD that will lock up the more you spin the wheel.

Kind of a pain in the ass really, but useful when you give it beans out of a junction curse it for not going sideways then realise there was a police car there all the time so it’s just as well you didn’t!

BCA

8,651 posts

286 months

Wednesday 2nd February 2011
quotequote all
Hydratrak. It always feels inconsistant in use - never locks fully when you want it to. Im not a big fan.

Quaife ATB is the answer.

cerberarno

Original Poster:

88 posts

188 months

Wednesday 2nd February 2011
quotequote all
OK
Thanks for that

Can we change internal parts or need to swap the whole diff ?

cerberarno

Original Poster:

88 posts

188 months

.Mark

11,104 posts

305 months

Wednesday 2nd February 2011
quotequote all
Have you checked the tyre pressures? Odd question perhaps, but I used to get loads of wheelspin pulling away at times and it was always low tyre pressures.
They were old tyres on the car when I bought it but loads of tread, air was leaking through the rubber yikes new set of tyres later and I've not had the problem since.

Cyclone1

2,614 posts

275 months

Wednesday 2nd February 2011
quotequote all
You can buy a non hydratrak diff, most 4.2's have these.

Jules

BCA

8,651 posts

286 months

Wednesday 2nd February 2011
quotequote all
Cyclone1 said:
You can buy a non hydratrak diff, most 4.2's have these.

Jules
A friction diff like the 4.2's is also IMHO superior to the Hydratrak, easier to come across than a used Quaife and cheaper. smile

itsallyellow

3,879 posts

249 months

Wednesday 2nd February 2011
quotequote all
How about a proper race BTR cone diff? We ran one in the cerb last year and it was very good. Plate diff this year though...