12 replies to this topic

[natcamp10]

Hey Guys
What diff are you running behind your hot sixes?
I picked a 3.9 lsd banjo that has had a failure at a axle and damaged the spider gears , housing is still has life in it .
I've been looking at a 21 spline true track centre from harrow, anyone using them , are they a good choice behind a hot six ?
The cost to rebuild the old the Banjo will be around $800 and the true track is 1200
Thoughts 👍

[RallyRed]

Hi mate..
I can only tell you my experience.
200rhp LJ track type car.
Road registered.

Started with the banjo LSD.. it wore out the clutches, got it rebuilt...same again. A waste of time and money.Admittedly, they told me the replacement clutches were only available ex China.

Got the Harrop Tru trac...silent and smooth in operation, a great LSD as long as both wheels on the road. As soon as a wheel lifts ..its all over..acts like a single spinner. A good road or drag diff.

Went to a Detroit locker...noisey and quite rough in its operation. Once locked..its locked. Lift a wheel?..still have great drive. Good circuit diff.

Summary..depends on your application and style. Banjo LSD good for road..once you start track type stuff..prob. upgrade to something else.
IMHO

p.s I cound the Harrop T/T fine spline axles and the Detroit locker fine spline axles were diffent numbers of splines...thus if you go Harrop T/T , then Detroit, you will need new axles as well.

Edited by RallyRed, 23 July 2018 - 07:57 PM.

[jd lj]

You'll also find that the tru trac diff centres are cheaper with more splines than they are with less. I think that they are available in 10,23 or 28 spline or something along those lines.

[I'm a Red Motor fiend]

Depends if u want to dick around with your axles or not.
For street use a banjo will be ok if you only want to spend less than a grand.
Harrop list a 10 spline at $1800 on their site but there is little point paying that much only to munch axles.
You can get a 28 spline but then there is the axle issue.
I would explore the tried and tested BW78 if I were you.

[yella sl32]

i got a harrop tru trac 28 spline setup in mine with billet axles all brought through Altra 9 in Brisbane 

[warrenm]

Another option is to use a diff from a pre 1978 Hilux, which is within 3mm of LC/LJ width, 30 spline axles, large amount of ratios to pick from.

[madtoranajzedded]

Hi mate..
I can only tell you my experience.
200rhp LJ track type car.
Road registered.
Started with the banjo LSD.. it wore out the clutches, got it rebuilt...same again. A waste of time and money.Admittedly, they told me the replacement clutches were only available ex China.
Got the Harrop Tru trac...silent and smooth in operation, a great LSD as long as both wheels on the road. As soon as a wheel lifts ..its all over..acts like a single spinner. A good road or drag diff.
Went to a Detroit locker...noisey and quite rough in its operation. Once locked..its locked. Lift a wheel?..still have great drive. Good circuit diff.
Summary..depends on your application and style. Banjo LSD good for road..once you start track type stuff..prob. upgrade to something else.
IMHO
p.s I cound the Harrop T/T fine spline axles and the Detroit locker fine spline axles were diffent numbers of splines...thus if you go Harrop T/T , then Detroit, you will need new axles as well.

These take quite a bit of abuse dont they Col
Should take 450 hp?

[RallyRed]

These take quite a bit of abuse dont they Col
Should take 450 hp?

450  yikes!

Out of my league Maz...you mean the Detroit?

[madtoranajzedded]

I thought the tru trac the ones that Grant was takin
orders a little while ago.thats the one i meant.

I must have it mixed up lol

[natcamp10]

So some guys I’ve benn talking with at a diff shop recommend I modify a borgwaner diff , Lsd and 28/31 spline bulls t axles , they recon it will handle 400 plus
Thoughts
It’s 2600 for the complete conversion , just have to fit it myself

[LJ RB30]

I have a borg Warner behind the RB30. 402rwhp 550ft/lb estimated at flywheel (18psi)
On a cool night it pushes 21-22psi.
Mainly drag duty.

Started with stock lsd & resplined axles that weren’t heat treated.

Twisted & broke the axles.

Went to 31 spline billett’s & bought a new 31 spl lsd from street n strip.
Would not recommend those lsd’s as They seemed to be of a softer material than originals & cones rapidly wore 😞
Now just have mini spool.

I have another BW cut down with 31spl axles for another LJ turbo red 6 slow project.

Certainly won’t be destroying anyone bango’s anymore! They will be only for my nana spec beast 🤪

BW 28/31 spl, either good stock lsd (only 28 spl afaik) or truetrac ( but they have issues as stated above) billet axles & away you go! Oh & you will have rear disc’s so that will sorted (I fitted VL calipers on VN disc’s to balance the system)

But yes it does depend on the vehicles intended use.

[I'm a Red Motor fiend]

Did the diff guys specify if the modified BW78 comes with a rebuilt LSD centre and brakes for $2600 ready to bolt in?
For an N/A 6, resplined axles will work. I haven't broken any yet.

[natcamp10]

Yeah full rebuilt Lsd diff , billet axles , no brakes but to the specs I want (disc or drums) all mods done bolt in , fabricate my own brake lines to suit what brakes I want ... in saying that I can get a cut down 9 “ for 2700 with discs on the back which I found today ..
I learning towards modifying it as the risk with a bango isn’t worth it .. do it once do it right