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Old 11-09-2017, 07:07 PM   #1
cuetip
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1997 SW1
Default Drum to Disc Parts

Hi all, I'm thinking about converting my drums to discs but am having a lot of problems sourcing the dust shields and parking brake cables. Yes, I know I don't need the dust shields, but I want them. I also want OEM parking brake cables because the aftermarket ones are junk.

I'd like parts that are as rust free as possible. Can anyone help?

Also is there another make and model's rear disc hardware that is compatible with my car ('97 SW1)?

Thanks in advance

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Old 11-09-2017, 10:57 PM   #2
Simon Rose
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Default Re: Drum to Disc Parts

For how dependable and maintenance free the stock rear drums are I can not see why you would want to replace them haha I think you are best off getting some high quality pads and new rotors up front and going over the rear assembly and checking the pistons and shoes. Its likely the last time you will ever maintain your rear brakes. Just my .02! I understand the need to do mods for fun so best of luck if you still go this route!

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Old 11-09-2017, 11:38 PM   #3
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Default Re: Drum to Disc Parts

Yeah, drum brakes are great... Except when they're not. I've had nothing but problems with mine. I blame the extremely poor quality of aftermarket parts. Cheap Chinese trash. 10 new warped drums later and I'm done spending money on a system I can't buy reliable parts for.

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Old 11-09-2017, 11:41 PM   #4
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1998 SC2
Default Re: Drum to Disc Parts

good drums are made by Centric.

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Old 11-09-2017, 11:46 PM   #5
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Default Re: Drum to Disc Parts

The easy to get stuff (walk into parts store, ask for '94 SC2 parts and if they ask if it has the performance package go find another store that isn't administered by morons):
Rear calipers ('91-'97 DOHC w/ABS)
Rear caliper bracket bolts ('91-'97 DOHC w/ABS)
Rear caliper slider pins ('91-'97 DOHC w/ABS)
Rear caliper pads ('91-'97 DOHC w/ABS)
Rear rotors ('91-'97 DOHC w/ABS)

The not so easy:
Parking brake cables (have fun with this one, length is model dependent and drum cables don't fit calipers)


I'd source the hardware from the nearest junkyard and bug the nearby granite shed guys to sandblast 'em.

https://www.wholesalegmpartsonline.com/ to find the part numbers, then hope eBay or partsvoice.com can source them if you have to have OEM (seems silly, OEM price's will put the cost of the swap well over the cost of buying a parts car with the parts...lol).

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Old 11-10-2017, 02:02 AM   #6
cuetip
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Default Re: Drum to Disc Parts

Quote:
Originally Posted by fetchitfido View Post
The easy to get stuff (walk into parts store, ask for '94 SC2 parts and if they ask if it has the performance package go find another store that isn't administered by morons):
Rear calipers ('91-'97 DOHC w/ABS)
Rear caliper bracket bolts ('91-'97 DOHC w/ABS)
Rear caliper slider pins ('91-'97 DOHC w/ABS)
Rear caliper pads ('91-'97 DOHC w/ABS)
Rear rotors ('91-'97 DOHC w/ABS)

The not so easy:
Parking brake cables (have fun with this one, length is model dependent and drum cables don't fit calipers)


I'd source the hardware from the nearest junkyard and bug the nearby granite shed guys to sandblast 'em.

https://www.wholesalegmpartsonline.com/ to find the part numbers, then hope eBay or partsvoice.com can source them if you have to have OEM (seems silly, OEM price's will put the cost of the swap well over the cost of buying a parts car with the parts...lol).
Thanks for the detailed response . No junk yards in WA seem to have any Saturns with rear disc brakes currently. I use the site you linked all the time. I found the part numbers for the brake cables and dust shields, but unfortunately neither eBay nor Amazon has them . I wonder if anyone on here has these parts. I'd be happy to buy them!

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Old 11-10-2017, 02:48 AM   #7
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Default Re: Drum to Disc Parts

For brake cables look on Rock Auto dot com, for 97-98, same model, AC Delo parts.

For brake rotors, and pads, or shoes and drums, look at EBC brakes...
Go to the second half of the catalog, and buy the kit, both items.

I paid $75 for my other car for a stage 1 kit, coated rotors, and pads, Ultimax Black. Parts bought individually would have been $125...

https://ebcbrakes.com/Assets/ecatalo...dex.html#p=590

...
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Old 11-10-2017, 08:34 AM   #8
trottida
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2001 SL1
Default Re: Drum to Disc Parts

May be send a message to the poster of this very recent post and have him hook up up.

What did you find at the Salvage Yard Today?: Post 1

...
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Old 11-10-2017, 12:50 PM   #9
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Default Re: Drum to Disc Parts

Quote:
Originally Posted by trottida View Post
May be send a message to the poster of this very recent post and have him hook up up.

What did you find at the Salvage Yard Today?: Post 1
But I'm gonna use those I'll keep an eye out for them though ^^

...
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I Want SAAB Soccerballs. But they're 4x115

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Old 11-10-2017, 01:49 PM   #10
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2006 VUE 3.5L
Default Re: Drum to Disc Parts

In 250,000 miles I've had to work on my rear drum brakes twice. Maybe convert the front to drums?

-Robert

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Old 11-10-2017, 02:14 PM   #11
cuetip
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1997 SW1
Default Re: Drum to Disc Parts

Appreciate it Neckomimi .

Just out of curiosity, what's the part circled in red in the pic below, and do I need it? I noticed that all the Saturns with rear disc brakes have it.

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Old 11-10-2017, 02:28 PM   #12
trottida
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Default Re: Drum to Disc Parts

I believe that is not a brake related part but rather part of the suspension and is present in both drum and rotor brakes.

Part # 7 below (21011206, BRACKET. Stabilizer Shaft) in the rear suspension diagram; this is the opposite side from the photo



I believe there is a different hub for disc brakes.

Here is the diagram for the rear disc brakes ....


...
Current rides
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Last edited by trottida; 11-10-2017 at 02:39 PM..

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Old 11-10-2017, 02:35 PM   #13
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Default Re: Drum to Disc Parts

Yeah that's the bracket for the rear swaybar on the Sx2's

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I Want SAAB Soccerballs. But they're 4x115

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Old 11-10-2017, 04:12 PM   #14
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Default Re: Drum to Disc Parts

I just checked and mine doesn't have it. What's its function?

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Old 11-10-2017, 09:26 PM   #15
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Default Re: Drum to Disc Parts

I just read up on what the rear stabilizer does. Now my question is why does my model not have it while others do? Would installing it mess anything up? Based on what I read installing it should help reduce body roll. Seems like a worthwhile upgrade. Thoughts?

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Old 11-11-2017, 12:06 AM   #16
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Default Re: Drum to Disc Parts

Not meaning to hijack your thread, but I have an SL2 with rear discs if you want to compare notes on how it goes together. The parts are not for sale, but I am in western WA.

PM me!

...
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Old 11-11-2017, 12:39 AM   #17
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Default Re: Drum to Disc Parts

The rear stabilizer helps make the car fun to drive. Hence why the DOHC"s got it and the SOHC's didn't. There's a bracket that needs to be welded onto the rear subframe (or the subframe swapped which involves removing a brake line and bleeding the brakes), after that it's a fairly simple swap though like dropping the gas tank you need to get the back end a fair way off the ground, 20+ inch's.

Rear disc only came with models with ABS.
Of those with ABS, only '91-'98 DOHC's were guaranteed to have rear disc (possibly only SC/SC2/SL2). '91-'96 SOHC's could go either way, but the disc option was dropped in '97.

After '98 rear disc was no longer an option even on the DOHC's, and for good reason (the caliper design is 110% JUNK).

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Old 11-11-2017, 03:10 AM   #18
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Default Re: Drum to Disc Parts

Quote:
Originally Posted by fetchitfido View Post
After '98 rear disc was no longer an option even on the DOHC's, and for good reason (the caliper design is 110% JUNK).
Why is it junk? The entire drum brake system on my car seems like junk. It doesn't seem to fit together like it should and pedal feel is different every time I drive the car because of it. The cheap Chinese **** aftermarket parts just don't fit together properly, and that's all that is available.

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Old 11-11-2017, 09:11 AM   #19
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Default Re: Drum to Disc Parts

Either you're not putting the drums on/together right, or you're not buying the right parts. The S-Series braking system is highly sensitive to properly adjusting the rear shoes, which is made more interesting because even the OEM backing plates have the adjuster access holes reversed.

The rear brakes don't get enough use to move the calipers enough to keep the slider pins free on their own (meaning you have to tear it apart and re-grease it at least yearly), the parking brake mechanism either freeze's up or strips out requiring a new caliper (and they cost more before core charges than my Silverado's dual-piston calipers WITH core charges) and/or the piston itself seize's up.
I've had a few S-Series with factory rear disk, converted at least 1 to rear disc (don't bother with the scammers at RockAuto for parts for the swap...) and a few other GM vehicles of the same era with the same style caliper...100% JUNK the lot of 'em.

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Old 11-11-2017, 09:30 AM   #20
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Default Re: Drum to Disc Parts

Swapping from drum to disk will cost you up front more than a proper rear brake system rebuild with quality parts and insure you have a reoccurring expensive rear brake maintenance curse.

Local parts store drums are usually JUNK. Rock Auto sells CENTRIC 12262030 and they cost $18 and change each. The critical parts are the shoes and the drum all the remainder are generic and any Wagner/Bendix hardware kits will work.

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