Discs and pads

[Adamw5433]

Hello all

Does anyone know what size the discs and pads are for a '94, 1.8i LS Hatch back Cavalier is?

I am thining about adding grovved or drilled and grooved brakes to the front wheels.
Does anyone know if SRI discs and pads will fit, WITHOUT modifiying the calipers?

Adam

[Squig]

give me a minute...

1.8 and 2.0 8v (inc SRi);
236mm diameter soild discs pre 92/ 256mm vented post 92
13mm Disc thickness pre 92/ 20mm pre 94 and 24mm post 94
60mm Hub hole diameter
41mm Overall height
4x100mm Stud pattern
48mm single piston caliper suited for 13mm discs pre 92/ suited for 20mm pre 94 and 52mm suited for 24mm post 94

GSi got all the best bits or equivalents of...

[Squig]

as yours is 94 chances are you have the same brakes as an SRi anyhow... if you have vented discs. are your pads rectangle shaped with a curve on the hub edge or an odd shape with a protrusion at either end?

[Adamw5433]

Mine are like this Squig...



Tah
Adam

[Squig]

more than likely you have the same brakes as the SRi anyhow in which case buddy... £27.45 + p&p for a pair of new discs from here. At those prices you could have them machined for cheaper than off the shelf parts... probably...

[Adamw5433]

K thanks for looking Squig.

I only ask as the MOT test showed the braking effort wasn't exactly great....
It was a pass JUST, but they need over-hauling.
I'll take the Cavalier back for MOT soon.... If it fails again with a new lambda sensor.
I'll take it off the road till after X-mas and do the following:


* Discs, both front axles
* Pads, Both Front axles
* Calipers, Both Front axles.


But that depends on how badly they come out, at the next MOT

Adam

[Envoy CDX]

If you stretch to it, Sherwoods do the disc and pad combos for £47 trade, if you ask nicely I'll use my trade card to order them if you want

AS for the callipers, what's wrong with them?

[Squig]

If you want to beef up the barkes on the cheap consider the v6 setup. You will have to get the discs redrilled to 4 stud but the rest should bolt on no worries, then slap some EBC green stuff pads on

[himselfunknown]

If you want to beef up the barkes on the cheap consider the v6 setup. You will have to get the discs redrilled to 4 stud but the rest should bolt on no worries, then slap some EBC green stuff pads on

Problem is, to do this you need to upgrade the calipers also.

I've heard that if you're not happy about redrilling them to 4 stud, disks off an Alfa Romeo will fit, though I'm not sure which one (156?).

I would recommend upgrading to V6 brakes though. I changed the normal 2.0 brakes on my CDX to V6 (redrilled) and the diffrence is noticable, and as the disks off the V6 were in good condition, it was cheaper doing the whole conversion than buying a set of disks!

[Squig]

Sorry I did mean to include the calipers too

[Squig]

286mm discs with 57mm piston caliper if you're wondering... and now you know another reason we v6 owners look smug

[Envoy CDX]

I think Vectra 4 stud are the same? 286/ 288?
If so, that might be a cheaper option

[Gaz]

vectra 4 stud are 256mm.

id just fit 288mm vectra 5 stud, and redrill disks and fit spigot rings, common as muck

[Squig]

are 8v hubs smaller than v6 ones then? as the vectra discs didn't fit my v6...

[Gaz]

8v and 16v are as they are 4 stud, not 5 like your v6



And as im nice heres the drilling diagram

[Envoy CDX]

are 8v hubs smaller than v6 ones then? as the vectra discs didn't fit my v6...

in what way?

Not even sure how I'd start going about drilling though.

[Squig]

Ahhh I see 4x100pcd against 5x110pcd would mean the internal diameter of the discs where they attach to the hub would be smaller on the 4 stud app than the 5 stud on cavs... hence why the 5 stud vec discs don't fit as they are too small

[Gaz]

Not even sure how I'd start going about drilling though.

easy as they are very slightly oversize holes anyway, just set the template onto the disk and line the holes up with the existing holes
the centre punch the middle of the holes you need to drill (you can see in the middle where the lines cross) and drill a 13mm hole, disks are a lot softer than you give them credit for.

Ahhh I see 4x100pcd against 5x110pcd would mean the internal diameter of the discs where they attach to the hub would be smaller on the 4 stud app than the 5 stud on cavs... hence why the 5 stud vec discs don't fit as they are too small

I know a guy who can open the middle of the disks up if you wanna go that way, id get a spare hub if you have one and say make that match that, hes cheap.

[himselfunknown]

Not even sure how I'd start going about drilling though.

easy as they are very slightly oversize holes anyway, just set the template onto the disk and line the holes up with the existing holes
the centre punch the middle of the holes you need to drill (you can see in the middle where the lines cross) and drill a 13mm hole, disks are a lot softer than you give them credit for.

This is true. I redrilled a set of disks in about an hour, but I was cheating using a drill that was designed to ream out holes (a couple of quid from Aldi, result!!). Don't forget if you're using the V6 disks on 2.0 hubs you'll need a set of spigot rings which you can get off ebay for about £15 posted.

Not even sure how I'd start going about drilling though.

Ahhh I see 4x100pcd against 5x110pcd would mean the internal diameter of the discs where they attach to the hub would be smaller on the 4 stud app than the 5 stud on cavs... hence why the 5 stud vec discs don't fit as they are too small

I know a guy who can open the middle of the disks up if you wanna go that way, id get a spare hub if you have one and say make that match that, hes cheap.

Or you could just change the hub for the Vectra one. Worth doing if you need new wheel bearings anyway. I've had a look at the EPC and the Vectra hubs will fit on a Cav V6 bearing. It's the next mod I'm planning for my V6, so I'll post up on here when I do it.

[Squig]

Yeah that sounds like a plan but I'll kill the discs I have first... should take me 18mth or so

[himselfunknown]

Here's a useful thread from another forum:

http://www.vauxhallownersnetwork.co.uk/ ... p?t=131049

There's lots of discussion about this very topic, might be useful to people on here?

[Gaz]

Guess who terry got his information off, and who was there while he was drilling his disks?

[himselfunknown]

Guess who terry got his information off, and who was there while he was drilling his disks?

lol, ooo, dunno, Father Christmas?!

Well, I guess it saves you having to type it all out again huh?!

[Gaz]

Oh yea it saves me work, hes not been in touch this week to do anything on his corsa, i think hes ill

[Envoy CDX]

Might see about getting a set of spare front legs for the cav and doing all the hub / disc work on that first - will need a set of wheels to go on it as well.

*back burner-ed project*