Does the Hydratrak unit fit other Diffs/Crownwheels?

[ridds]

Just curious is the core swappable bewteen other non LSD diffs?

[ridds]

Anyone?

[Mr Completely]

Wish I could help

but

I'm too dull.

Good Luck

[Boosted Cerb]

A hydratrak and non hydratrak diff unit are swappable but I doubt they'd fit into other diffs, its a bespoke part made for that type of diff??

Although, I bet it'll fit into the usual suspects, Viper, Monaro, Holden diff's etc as they're are all BTR derivatives.

What are you thinking about Matt?

[tvrolet]

ridds said:

Just curious is the core swappable bewteen other non LSD diffs?

Assuming it's the BTR hydratrack unit, John Reid (google Readman racing) will do different crown and pinions to change the gearing. You should be able to get the following ratios - 3.91, 3.73, 3.46, 3.23 and 3.07. Not sure if you can swap the hydratrack itself in or out but John would know.

[ridds]

I've just got myself a 3.73 diff from a 03 plate Tuscan and was thinking about swapping my Hydratrack across to it.

However the tag is the same as on my current diff (oil spec one) so I'm guessing it already has the Hydratrack unit.....?

[VPower]

Hi Matt

I have in the past tried to get a schematic of a Hydratrak, just out of interest.
Mainly because of reports that they GRAB suddenly, they allow one wheel to spin continiously if it were say on a grass verge etc..
Still not been able to find one.

Although I'm not sure, I believe it is in fact a Borg Warner type silicon unit, similar to the LSD fitted to the Range Rover 4X4 transmission.
http://en.wikipedia.org/wiki/Viscous_coupling_unit


Anyway, are you trying to lower your final drive ratio to reduce revs??
I'm just interested, as they do feel "revy" and with the T5 5th gear being a weak point(?) I'm thinking that raising 4th would be helpful, thus keeping 5th as a real overdrive??

Steve

[ridds]

I've not had any real issues with mine so far.

I'm going from a 3.46 to a 3.73 to reduce the final drive, this will give shorter gearing and improve acceleration, as I hardly ever use the upper reaches of 5th! lol

[VPower]

Do you really fell that will improve acceleration???

Mine was wheel-spinning in 3rd up the Le Mans start line during the Classic club laps!!

Good ole Hydratrak kept it in a straight line!!
I had a full tank of gas and boot full of camping gear too!

[Brummmie]

I went from the 3.45 to a 3.08, and its faster accelerating thanks to each gear being longer, it also matches the top speed almost perfectly, Richard D did some calculations and a 2.90 would be ideal, giving a theoretical 218mph as opposed to its 208mph at the mo.
Perhaps ask Richard to do the Cartest program on yours first before tearing it apart?
His calculations so far have pretty much been spot on with actual figures on Qtr miles etc.

[ridds]

Your engine has twice a much torque as mine though!