Rear Disc Brakes

[jmh]

Hi all,

I have done several searches on the forum for exactly what needs to be done to use rear disc brakes, and I think I am perhaps being a little thick, as I don't get all of the options.

Firstly, whilst I am aware that there is not a great deal of performance gain in using discs, I would prefer to use discs simply because I prefer maintaining and servicing discs as opposed to drums. As I am not too far into the build I thought I would evaluate what I would need to use rear disc brakes.

I have the rear up rights in component form, so I can choose to weld this up for either configuration.

I have all of the running gear for rear drum brakes

I have the rear brake calipers for disc brakes too.

So my questions are

Do I need to change the rear drive shafts if I go with the disc brake option, or can I modify the drum drive shafts I have at the moment?

Does the adapter plate sold by 3ge simply provide the correct mount for the caliper and I would still need to change the drive shafts?

Cheers for your help and sorry if this is a rather silly question

Jonathan

[twinturbo]

Personaly I am using 10" drums for 3 Reasons.

1) Got em free.
B) The rear is less likly to lock up and getting a balance front to rear is probably going to be easier for the IVA.
3) Having owned many sierras, I can assure you that the handbrake mechanism on the disk brakes is prone to siezing even on cars with fairly regular use, on a lightly used kit the may be useless.
IV) The disk setup on sierras without ABS uses a larger rare master cylinder that provides more fluid movement than the drum brake one.

TT

[MikeB]

I was looking at going drum, then hoped the 3GE adapters would allow me swap over later, as far as I know you won't need to change drive shafts but I haven't done it....
Be interesting to know if anyone has fitted them.

Mike

[3GE Components]

Hi Jonothan,

You don't need to change the drive shafts, the plates bolt on to the existing bearing carrier. You just need to source Sierra 2wd std 2.0 or Sierra 4x4 2.0, 2.8 or 2.9 rear calipers (all the same) and std Sierra solid 253mm rear discs.

Hope that helps.

Kind regards

John

[mikemph]

Can you either type of driveshaft and diff setup ie either bolted driveshafts or push in type?

Is there any pro or cons to each setup?

[flyerncle]

I have the adapters and they fit well and you can fit the disc's straight over the drive flange.

You may find that the calipers hit the uprights and the center plate may need to be turned to accomadate the caliper.

A look at Spikhaus's blog may help.

Or try this..... My set up.



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