disc brake conversion for daewoo lanos sport

mister_g · Post by **mister_g** » Fri Nov 25, 2005 11:00 am

Can I use rear disc brakes from astra mk2? What do I need?
Is this possible anyway?

MMamdouh · Post by **MMamdouh** » Fri Nov 25, 2005 1:14 pm

yes it is doable as long as you are talking about a Lanos... you will need:

1- the full rear brake assembly (hub, axel rotor & caliper).
2- the proportional valves for the rear brakes off the MkII Astra.
3- the hand brake cable of the MkII Astra.

in the end your rear brakes will look like this:

remeber that using rear disk brakes with proportional valves designed for the drums will make your rear wheels lock at braking and could be dangerous.

also if you didn't get the hand brake cable you won't be able to operate the hand brake as the cable you currently have won't fit (too short IIRC).

MMamdouh

GsiTurbo · Post by **GsiTurbo** » Fri Nov 25, 2005 7:04 pm

Actually, rear axle is not required. Factory spindles are bolted to the rear beam. On the other side, the rear axle of the Astra Mk2 or KAdett with rear brakes is better due to the following:

- proper rear anti-sway bar
- different rear tires geometry, to improve handling, and to compensate for the fact the GSI came lowered from the factory (when compared to a non-GSI model it sits about 1cm lower).

Tom

tango · Post by **tango** » Mon Nov 28, 2005 11:29 am

The entire live-axle is necessary. The mounting posts for the brake assemblies are completely different. It's not possible to just take the drums off and put the rotors on. I would suggest you not stop there. Install the master cylinder and the front brake assembly as well. Otherwise you will feel a noticeable rear squatt on braking because those rear discs are significantly bigger and more powerful than the fronts.

If you simply swap the rears you will also have to make adjustments to your brake pedal to get proper feel. You'll have to adjust the pedal closer to the floor board. This will in turn cause your pedal to give way from the brake lamp switch. That means your brake lamp will be constantly on. You can correct this by bending the metal plate that the switch mounts to towards the pedal. Be especially careful with this because the torque-convertor gets signal from the first 2cm or so of brake lamp switch activation. If this first 2cm is not overcome your torque-convertor (if it's an auto) will not lock. We don't usually notice the torque-convertor locking but the moment it doesn't we do because engine speeds at cruise are suddenly 500rpm higher!

jonlint · Post by **jonlint** » Sat Dec 24, 2005 8:00 pm

mmamdouh wrote:yes it is doable as long as you are talking about a Lanos... you will need:

1- the full rear brake assembly (hub, axel rotor & caliper).
2- the proportional valves for the rear brakes off the MkII Astra.
3- the hand brake cable of the MkII Astra.

in the end your rear brakes will look like this:

Am I right in assuming from the photo that the shocks are SPAX for a Mk2 Astra? If so, are they are direct fit for the Lanos?

Audacity Racing · Post by **Audacity Racing** » Sat Dec 24, 2005 8:07 pm

the suspension is identical between the lanos and the mkii (to the best of our knowledge)