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80s factory locker centre into 73/75 housing
Posted: Sat May 20, 2006 10:46 pm
by midi73
Mission: to put an 80 series factory diff locked centre, (which I happen to have) into my 73 series housing.
Revelation: After pulling out the 80 series centre I realize that the way these lockers work is by a collar sliding back and forth along the axle spline to lock and unlock. To lock it slides towards the centre and two lots of teeth mesh together.
Problem: For this operation to work the 80 series axle has a longer spline for the teethed collar to slide along, and The 80 series axle is the wrong length to fit into the 73/75 housing.
Questions: Has anyone got an easy solution to this?
I know that the 75 comes with a factory locker as well so is it possible to by the right length axle with the long spline? if so where from?
is it possible to get the spline lengthened on the 75 series axle.
Thank you for your help in advance.
Posted: Sat May 20, 2006 11:56 pm
by toyrex
If the 75 comes from the factory with a locker the smart thing would be is to try your local Toyota dealership
If you can find a machine shop that knows what they are doing the axle can be splined , we have done this on the Toyota diffs in sprint cars to get the correct axle offset
Adrian
www.chevtorque.com.au
Posted: Sun May 21, 2006 12:12 pm
by midi73
Thank you adrian. Would the machine shop need to reharden the axle once the spline has been lengthened, what sort of cost was it for you to get it done.
(Does anyone know a good machine shop in either the sunny coast or Bris that can do it.)
As for going to toyota, the price I reckon they would charge I may as well go and buy an air locker.
Do you (Or anyone else on this forum reading this) know where I might be able to get a second hand axle.
Also I dont even know if the 75 factory locker is the same set up as the 80series factory locker.
And does anyone have an exploded view pic of the 80series factory locked centre.
Cheers.
Dave.
Posted: Sun May 21, 2006 10:49 pm
by 80UTE
The problem with most Toyota axles is the reduce the diameter where the splines finish so nothing to spline but shoulh be able to get a new axle from Toyota !!!!!
wally
Posted: Sun May 21, 2006 11:01 pm
by Shadow
80UTE wrote:The problem with most Toyota axles is the reduce the diameter where the splines finish so nothing to spline but shoulh be able to get a new axle from Toyota !!!!!
wally
how much would that cost :S!
Where did you get the locker from? do you still have the inner axles from the 80 that had the locker? if so your best bet would be to sell someone with an 80 series the locker and axles and buy an air locker.
Posted: Sun May 21, 2006 11:46 pm
by midi73
Shadow wrote:80UTE wrote:The problem with most Toyota axles is the reduce the diameter where the splines finish so nothing to spline but shoulh be able to get a new axle from Toyota !!!!!
wally
how much would that cost :S!
Where did you get the locker from? do you still have the inner axles from the 80 that had the locker? if so your best bet would be to sell someone with an 80 series the locker and axles and buy an air locker.
Tis a good idea. I will prob do that. Actually I may be swapping it with someone who has an airlocker.
Thanks for your replys.
Posted: Mon May 22, 2006 2:54 pm
by beanz2
You can get a genuine Toyota axle with longer splines as some 75 series and 60 series came with factory lockers. Part number 42311-60080 is the one you need if your cruiser is older than 1998, but it has been superceded by 42311-60081 which takes a larger 36 mm seal, so if you have to buy a new axle from Toyota (about $200) be sure to get the larger seal too.
In my opinion the area where the longer splines need to be located does not have to be as strong as the end where the differential gears are as the longer splines are only for the locking cog to slide over. Once it has slid over, there are no rotational forces placed on the cog. If axle shops around here (I'm in the US) were willing to do this, I'd definitely have it done to save some money.
Dave
Posted: Mon May 22, 2006 6:34 pm
by J Top
You can use the 80 axle but shorten it by passing the axle through the driveflange. You then heat shrink a collar onto the axle and weld it to the flange. Used to do this all the time with Ford Bonus diffs converted to Quickchange setups in Speedway cars.
Some axles have too thin a flange so you machine one up from thicker material. Still works out quite cheap.
J Top