Rear Drum Brakes to Disc Brakes : 1992-1999

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Rear Drum Brakes to Disc Brakes

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Goodfellow

Post subject: Rear Drum Brakes to Disc Brakes

Posted: Sat Dec 22, 2012 9:37 pm

SE Member

Joined: Mon Sep 24, 2012 7:17 pm
Posts: 19
Location: Georgia
Year and Trim: 1997 SSEI, premium spark wires and iridium plugs.

Is it possible to convert the rear drum brakes to disc on a 97 Bonneville SSEi. Had a hard time finding it on the forum, may be because it cant be done; just a stab in the dark.

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MattStrike

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sat Dec 22, 2012 10:31 pm

Certified Bonneville Nut

Joined: Tue Aug 25, 2009 8:32 pm
Posts: 4759
Location: SE Michigan
Year and Trim: '99 Montana
'04 Dirtymax
'97 Camaro
'92 Trofeo

Possible? Yes, but there aren't any 'bolt on' existing parts unless you can find a Pontiac 6000 STE, which still is not 100% bolt on.

But you need a few custom parts; and nobody here has done this yet. There is also some work that needs to be done to select the correct size rotor and pads/calipers to match the weight of the vehicle. And to select the correct proportioning valves.

I was looking at using the calipers, pads and discs from a '00+ with a custom adapter plate. But the adapter plate pushes the wheel further out, and may cause clearance issues in the wheel well, and It's not very high on my list of things to do.

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00Beast

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sat Dec 22, 2012 10:43 pm

Retired Site Developer

Joined: Tue May 27, 2008 10:30 pm
Posts: 20960
Location: MN/IA
Year and Trim: '17 Silverado 1500

It has not been done yet. Not really worth it for ~20% of your braking. Make sure the drums are in good condition and properly adjusted, and work on the front brakes.

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Goodfellow

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sat Dec 22, 2012 11:22 pm

SE Member

Joined: Mon Sep 24, 2012 7:17 pm
Posts: 19
Location: Georgia
Year and Trim: 1997 SSEI, premium spark wires and iridium plugs.

what do you mean adjusted. Did the rear brakes on my car last year and didnt do any adjustment to the drum. What do you mean adjustment to the drum?

Are we talking about the distance between the drum and the shoes?

Last edited by Goodfellow on Sat Dec 22, 2012 11:30 pm, edited 1 time in total.

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00Beast

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sat Dec 22, 2012 11:30 pm

Retired Site Developer

Joined: Tue May 27, 2008 10:30 pm
Posts: 20960
Location: MN/IA
Year and Trim: '17 Silverado 1500

Adjusting the shoes for the proper amount of drag, and to make sure when you push the pedal they actually cause braking effort. The star wheel on the bottom is responsible for that.

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Goodfellow

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sun Dec 23, 2012 12:23 am

SE Member

Joined: Mon Sep 24, 2012 7:17 pm
Posts: 19
Location: Georgia
Year and Trim: 1997 SSEI, premium spark wires and iridium plugs.

ya did that, so i am good. got me worried there

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00Beast

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sun Dec 23, 2012 12:31 am

Retired Site Developer

Joined: Tue May 27, 2008 10:30 pm
Posts: 20960
Location: MN/IA
Year and Trim: '17 Silverado 1500

The brakes also are supposed to self-adjust when you apply the parking brake or step on the brakes in reverse, provided the adjusters move freely and aren't rusted up, like many are now...

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MattStrike

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sun Dec 23, 2012 12:43 am

Certified Bonneville Nut

Joined: Tue Aug 25, 2009 8:32 pm
Posts: 4759
Location: SE Michigan
Year and Trim: '99 Montana
'04 Dirtymax
'97 Camaro
'92 Trofeo

00Beast wrote:

The brakes also are supposed to self-adjust when you apply the parking brake or step on the brakes in reverse, provided the adjusters move freely and aren't rusted up, like many are now...

This.

The '92+ auto-adjusters are also a better design than the '86-'91 were and don't suffer from a certain mechanical wear out..

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jfields86

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Fri Jul 22, 2016 10:46 pm

SLE Member

Joined: Fri Jul 22, 2016 10:43 pm
Posts: 54
Location: Inedpendence, IA
Year and Trim: 97 Pontiac Bonneville SSEi Supercharged

http://www.avsontheweb.com/little-shop- ... rsion-kit/ check it out.

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97' Bonneville SSEi [work in progress]

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RJolly87

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Fri Jul 22, 2016 11:00 pm

Certified Bonneville Nut

Joined: Tue May 27, 2008 8:53 am
Posts: 5403
Location: Las Cruces, NM
Year and Trim: 1993 Buick Park Avenue
1994 Buick Regal Custom

jfields86 wrote:

http://www.avsontheweb.com/little-shop-of-horrors-88-00-gm-fullsize-rear-disc-brake-conversion-kit/ check it out.

1st off, that kit is not compatible with this application (so much so that I suspect this may be spam)
2nd off, it's considered poor forum etiquette to scare up a post from a thread that is 4 years dead.

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MattStrike

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sat Jul 23, 2016 12:41 am

Certified Bonneville Nut

Joined: Tue Aug 25, 2009 8:32 pm
Posts: 4759
Location: SE Michigan
Year and Trim: '99 Montana
'04 Dirtymax
'97 Camaro
'92 Trofeo

Even worse yet, I've managed to put together a bolt on rear disc brake setup for less than half that now.

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95naSTA

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sat Jul 23, 2016 10:37 am

Certified Bonneville Nut

Joined: Wed May 21, 2008 11:47 pm
Posts: 6886
Location: Philadelphia
Year and Trim: 95 SLE

Matt, how did you end up dialing in the rear bias?

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jfields86

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sun Jul 24, 2016 11:16 am

SLE Member

Joined: Fri Jul 22, 2016 10:43 pm
Posts: 54
Location: Inedpendence, IA
Year and Trim: 97 Pontiac Bonneville SSEi Supercharged

Why would it not work? Is a 97 bonneville not an 88-00gm fullsize? Just trying to be helpful..

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Justin{Reed}

97' Bonneville SSEi [work in progress]

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RJolly87

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Sun Jul 24, 2016 11:37 am

Certified Bonneville Nut

Joined: Tue May 27, 2008 8:53 am
Posts: 5403
Location: Las Cruces, NM
Year and Trim: 1993 Buick Park Avenue
1994 Buick Regal Custom

jfields86 wrote:

Why would it not work? Is a 97 bonneville not an 88-00gm fullsize? Just trying to be helpful..

Full size car, yes.

But when you scroll down to the details, you are met with this:

Quote:

Fits the following:

88-99 Chevrolet C1500 Pickup
95-00 Chevrolet C1500 Suburban
95-99 GMC C1500 Suburban
99-00 Cadillac Escalade
88-98 GMC C1500 Pickup Sierra
95-00 Chevrolet Tahoe
95-00 GMC Yukon, Denali, XL 1500
A rear disc brake conversion that doesn't break the bank. Installation is simple, requires no welding, and it's not neccessary to pull out the axle shafts. Serviceable parts are also available individually. This kit is compatible with GM 1988-1999 pickups and 1995-2000 SUV's with light duty 5 lug rear ends. Even if it is listed above, if it is not the 10" drum size or does not have the correct flange measurements then the kit will not fit.

2 completely different animals.

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~Randall~

1993 Buick Park Avenue - 197k - Some odds and ends done - Simply won't die
1994 Buick Regal - 78k - Bone stock - Always ready for a good kicking
1990 Oldsmobile 88 - Gone to a better place

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MattStrike

Post subject: Re: Rear Drum Brakes to Disc Brakes

Posted: Wed Jul 27, 2016 9:45 pm

Certified Bonneville Nut

Joined: Tue Aug 25, 2009 8:32 pm
Posts: 4759
Location: SE Michigan
Year and Trim: '99 Montana
'04 Dirtymax
'97 Camaro
'92 Trofeo

95naSTA wrote:

Matt, how did you end up dialing in the rear bias?

Right now the rears lock up about the same time as the fronts; not dialed in yet, but I got a good set of pads for the front to get to this point. I'm working on the next larger size rotor setup now. I do have an adjustable proportioning valve too now in case that's still not enough.

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[ 15 posts ]

Portal » Board index » Mechanical and Maintenance (no chat or performance) » 1992-1999

All times are UTC - 5 hours [ DST ]

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