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Old 02-20-2002, 08:57 PM   #1
Bar(long a)
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Default Rear disc conversion

Has anyone done the rear drum to disc conversion on their SC2 as detailed in one of the How To articles on our foum?

I'm too lazy to do a search

I'm particularly interested in anything that cropped up necessitating real time engineering mods.

I love my 99SC2's handling, acceleration, looks, etc. BUT, the braking leaves a tad to be desired for a 2600lb ride. I believe rear discs would help immensely.

Thanx in advance!


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Old 02-20-2002, 09:36 PM   #2
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Joe Cutrone at www.6thplanetusedparts.com is an authority on this and can sell you the parts you need as well as advise you on the gotchas.

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Old 02-21-2002, 04:31 PM   #3
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Happy Re: Rear disc conversion

Quote:
Originally posted by Bar(long a)
Has anyone done the rear drum to disc conversion on their SC2 as detailed in one of the How To articles on our foum?

I'm too lazy to do a search

I'm particularly interested in anything that cropped up necessitating real time engineering mods.

I love my 99SC2's handling, acceleration, looks, etc. BUT, the braking leaves a tad to be desired for a 2600lb ride. I believe rear discs would help immensely.

Thanx in advance!


i've done two rear discos. one on my old 92 sc and the other on my now 96 sc2. step one: get a chiltons or saturn factory service manuals. (not haynes) step two: remove all the drum crap. step three: bolt on the disc goodies, bleed brakes.
that's about it! the first time took about four hours, the second time about two hours since i knew what to expect. (i used saturn factory service manuals both times)

oh. the tricky part was removing the brake hoses from the brake pipes so i had a saturn tech do it. that way if he broke them he could replace them. i did the rest myself.

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Old 02-22-2002, 08:04 AM   #4
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eric or anyone:
Is there no change that needs to be made to the master cyl. or other area to balance the braking from front to rear or rear to front since the car will now have front and rear disc brakes? Is the master cyl a single cyl unit or seperate for front and rear? If seperate, shouldn't there be something that changes the balance of the system to compensate for the difference between rear drum and rear disc?
I have considered a rear drum to disc conversion but didn't know how many things had to be changed for it to work properly.

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Old 02-22-2002, 11:59 AM   #5
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I was wondering about brake proportion, master cylinder size, and emergency brake cables.

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Old 02-22-2002, 04:44 PM   #6
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Quote:
Originally posted by sc2_94
eric or anyone:
Is there no change that needs to be made to the master cyl. or other area to balance the braking from front to rear or rear to front since the car will now have front and rear disc brakes? Is the master cyl a single cyl unit or seperate for front and rear? If seperate, shouldn't there be something that changes the balance of the system to compensate for the difference between rear drum and rear disc?
I have considered a rear drum to disc conversion but didn't know how many things had to be changed for it to work properly.
no. the master cylinder and proportioning is the same so you don't have to mess with anything forward of the brake hoses. the parts you need to convert from rear drum to disc are:

rotors, calipers, pads, brake hose, parking brake cables, zip ties that hold up the parking brake cables under the car, bolts to attach the calipers to the hubs. re-use the hubs that came with drums. also you will need bleed screws for discs and fluid to bleed them.

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Old 02-23-2002, 11:15 AM   #7
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http://www2.saturnperformance.com/sa.../drum2disc.asp

Tada! A link!

Abe.

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Old 02-23-2002, 08:04 PM   #8
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Thanks to all.

Abe, I do have that printed out. Did it last summer when I bought my 99SC2. I decided Iwait intil I had driven some miles on it before making my decision on whether or not to convert. I think now my decision is affirmative.

This puppy is a great handler in the corners, I believe the conversion will help me immensely with my heel/toe response. I used to race TR-7 at Elkhart Lake in Wisc. with some marginal success. That's where I honed my heel/toe racing.

I plan to get the hardware in a couple of weeks. I'll let ya know how it went.


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