10 replies to this topic

[ls2lxhatch]

I doubt that fitting anything other than 9" internals in a 9" carrier will be a budget option.


Strange engineering do make a 12-Bolt drop in centre section to suit the 9" housing.

[Heath]

I'm a bit confused about what you actually want to do?

The only attraction I'm seeing to this at the moment is if you had an original looking car that was originally fitted with a 9" (like say an old GT Falcon that had a lot of go), and you were really keen on getting the unsprung mass as low as possible, or if you had a vehicle where it was very hard to adapt different diff housings to.

But with a housing as big as a 9" unit, and enough money, you could fit pretty much any Banjo-style or Salisbury-style 'gear' into it, by constructing some kind of third member that holds it all together and bolts into the diff housing with the standard 9" case bolt/stud pattern. But if you already have a 9", you already have access to heaps of good ratios, LSDs/spools/ratchet lockers, probably viscous LSDs and everything else you can think of, good lightweight 3rd members, nice big side gears for 31 or 35 splined axles if that's what you're after, etc.

Putting 9" internals in a smaller diff housing on the other hand, that sounds more useful & intriguing.

[TerrA LX]

a guy once told me a borg-warner or was it a salisby internals will fit into a 9 inch carrier?

What exactly do you mean by internals?
The LSD?
The gears?
I spose they will fit in there, bolting them up and getting them to work would be a whole different story.

Then again, with the third members you are able to get your hands on the only limits are your imagination.

[Heath]

73xu1, would have probably been better to begin with that information

You could sell the 9" and get a Borg Warner made up to be the same width and the same stud pattern as what you have, but there is a bit of time & money in setting up rear brakes, handbrake mechanism, tailshaft etc. Depends on what you want to do with the car but it is PROBABLY easier for you to just get a different 9" gearset and buy a Truetrac centre or similar. Unless you have a real need to, I wouldn't suggest doing anything exotic. If you care about 20kg of unsprung mass, or you want to change other rear end geometry, that's a good oppurtunity to go for a lighter diff, but if you don't value those things then swap the pinion & crown wheel for one that suits you better (probably won't cost you anything if you find someone who has what you want, and wants what you have) and buy a decent LSD.

Edited by Heath, 16 August 2010 - 01:22 PM.

[wot179]

Wassa truetrac center ?

[ls2lxhatch]

A Truetrac is a worm drive torque sensitve limited slip diff currently made by Eaton. It is a good all round diff but it never provides 100% torque to both wheels.

Detroit Truetrac