Hey all, has anyone here fit discs to a H165?

haven't done it personally .... yet.
bluebird disc over drums appear to be the easiest. plenty in the search bar try 'disc brake diff' and you'll come up wiht heaps when you look through them. good luck

Yeah i read about the disc over drum thing. Might sound like a dumb question but what does it mean, is it replacing the drum with a disc or what?

there is both discs and drums, drums are operated by cable as handbrake, discs by hydraulic as foot brake

should all bolt in (swap bluebird backing plates onto h165 axles)

done it to a h190 reports are it's the same thing for a 165

all brake lines match straight up

The hydraulic brake lines do not match up if using the Aussie Bluebird disc brakes, as these brakes use a floating caliper [like the front] This means that they must have a flexible hose attached to the caliper & it must be anchored at the inner end to a bracket welded to the rear axle housing.
However, if you use the larger drum brakes from the same Bluebird, then the brake lines will fit up OK.

I now have a 1200 ute rear axle assembly & a set of Bluebird disc brakes, so I will see what can be done & I am in the market for a H165 diff in 3.7 to 1 ratio.
These were used in Bluebird four door sedans that came originally with the four speed manual.

I think you will find exactly as 1200rallycar said" There is both disk and drum" in the bluebird disk brakes. Drum brakes used as handbrake. Disk as stopping brake.

Quote:

Let us know if you happen to turn up an alloy H165 diff carrier in your searchesl Dodgeman, I'd love some firm info as to what models they were fitted to.

how much should i pay for the discs? what parts do i need to get from the bluebird for a successful conversion?

apparentley the way you tell if there the correct brakes, is if the carrier bolting to the diff housing has 8 bolts in total. im pretty sure thats correct besides the lack of knowledge i have for the entire conversion.

NZDatman
I don't know if an alloy carrier for the H165 was ever made.
H145,... yes H190,... yes, but H165? I plead ignorance, but should I ever stumble across one, I will tell you, & all of Datsun-dom.

2qk4u
If we are talking about the Datsun B120 ute rear axle setup, then the right disc brakes are the ones used on the Aussie 910 Bluebirds. [early to mid 80's] They were standard on the LX & TRX models, except for the very first of the series 1 LX models when supplies of components were not quite ready, & they got drums.

You will need to take the whole calliper complete with hose & the little bracket on the inner end of the hose that bolts to the axle housing.
Next, take the rotor [disc], then remove the whole rear axle shaft. The rest of the brake will come with it. You will need to remove the bearing from the axle so that you can salvage the brake parts.
Discard both bearing & axle, but make sure that you get the bolts & nuts that hold the brake plate to the axle housing as they are longer than the drum brake ones.

Next, strip the axle shafts from your ute axle housing & remove the bearings as before. Discard bearings & brakes.
If you can get a Bluebird workshop manual, it will show you how to assemble the new bearings to the axle after first sliding the disc brake's brake-plate on & reassembly is basicly the reverse of dissasembly, but read the manual as you go.
The brake hydraulics will need to duplicate the original bluebird setup & this will probably be the hardest part.

Before you slip the axles back in, have a think about the diff ratio. If you have the original 4.11 to 1 ratio from the ute, then remember that the donor car probably has a 3.9 to 1 differential in that old axle housing & this might be a better deal for use on the road with a souped up A series.

You will need 14" wheels to clear the brakes.
This design is a 'drum in disc' setup where the disc also has a small drum brake in it & this is the mechanical parking brake. The original ute hand brake cable looks like it will hook up ok, but since i have not done this yet, I can not guarantee that the handbrake linkage will fit, but I 'believe' it will.

dodgeman thanks for that.

Iv traced up a set ill just get the whole diff and go from there. will there be any change in offset or anything like that?