Toyota Surf rear diff 10 tooth pinion's

[Crawlz]

Hi there can anyone please tell me if ln130-kzn130 rear diff 10 tooth pinion's are the same ... as can i just change 41 tooth crown with a 43 tooth crown to go from 4.1 to 4.3 ? cheers Craig

[kaupoi]

Hi Craig,

To my knowledge c/pinions come as a set so aren't really interchangeable, be ok to do in a bush truck but not a road going vehicle.
If you were keen to sell your 4.1 crown/pinion id be keen on them.
Will help in the purchase of a 4.3 set.

[churchill]

They are matched sets, you need to change both at the same time. 4-8 hours per diff and you need some specialised equipment to do it properly.

[Smurf]

No you can't just swap the pinion as the ring gear has a different number of teeth also.
To change ratio you need to remove the diff head and swap in the appropriate ratio diff head.
Swap both front and rear obviously

[Crawlz]

Dam ... Was thinking that but just wasn't truly sure . Thank you all for your help , looks like the job just got a little bigger . Cheers all .

[Smurf]

It is easier to swap out a diff head and replace with another one than it is to remove the diff head and dis assemble /re assemble then refit. Replacement diff head will cost a bit more than a second hand pinion if you can find one.
Diff head has to come out either way.

[lax2wlg]

It is easier to swap out a diff head and replace with another one than it is to remove the diff head and dis assemble /re assemble then refit.

x2 and that also gives the peace of mind that the carrier bearing preload and pinion depth is already setup to factory tolerances, which is extremely important to maintain strength/durability in these particular units.