Volvo diff identification

The upgrade is pretty much rebuilt calipers, good pads, new rotors, that’s pretty much the best it can be

They are pretty good as they are, loads of stopping power. New rotors, pads and fluid will see you through. Occasionally the calipers lock up, a set of rebuilt ones would be best while you are there.

if you are keen for more (scroll down lots):

https://www.240turbo.com/volvo240bigbrakes.html

my favourite is the Porsche calipers:

https://www.bneshop.com/collections/240/products/240-brembo-17z-adapters

Tiler
They’re stronger than a Banjo, weaker than a Salisbury.

There’s two versions of the Volvo diff.
The earlier type is called a 1030, and is a close copy of the Dana 30.
The later type is a 1031 and uses the same 27-spline axles and centre, but has a larger pinion and slightly larger crownwheel.

Changeover is the early 1980s. If it has an electronic speedo sender, then it is 1031 - but there are a few years of 1031s without the speedo sender.
You might find information about the number of ribs being an identifier (1030 vs 1031), but it is NOT accurate.

If you are going to give the diff a hard time, the first thing that will break is the cross pin.
If you weld the diff or fit an LSD, then the next thing to break is the axles. I have not tried Ledfoot’s shot peening solution.

Should also add that 1030 ratios are freely available as Dana/Jeep parts, including new aftermarket parts.

Alternate 1031 ratios only seem to be available from Sweden at considerable cost.
Most people who use these diffs in 6-cylinder or V8 cars quickly find that they want a taller ratio (smaller number). The best option is the 3.31:1 from an 86+ manual 240, but they are relatively rare.

rotors and pads are still available at the local parts shop. most likely they will be ordered in. i prefer genuine rotors though many have said aftermarket are readily available. pads come in a vast variety of materials. avoid the genuine pads, they are super dusty.

Calipers are no longer available new hence mentioning rebuilding them. Try a brake shop for this or a licenced mechanic or workshop. Berry Motor Group or Voldat in Melbs will be able to help. The do lots of 240s.

Interstate workshops do exist, just mention your location here and someone local to you can point you to a recommended workshop.

I get 240 pads and RDA rotors online delivered from Richmond Brake & Clutch, their prices are really good

I think there is a shop there called GLT Automotive or something similar. GLT something, a local will know.

@dmc GLT Car Centre at Capalaba. The Volvo gurus for Brisbane.

https://gltcarcentre.com.au/