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Old 02-04-2004, 05:05 AM   #1
JDub99SL2
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1999 SL2
Default Rear Disc Conversion

A couple weeks ago, I bought all the required parts to convert the rear brakes over to disc from Sleepr. In case any of you were interested, there are some pictures of the final product in my gallery.

Overall, the installation is not difficult at all. The best part is getting to go crazy on the drums and just rip 'em apart! :-)

The worst part is bleeding the new calipers. Ughhhhh. I am still not sure I've got ALL the air out, but the brakes work great, so I'm not worried. I may bleed them again, when I get a chance.

Overall, this was definitely very worthwhile and if any of you are considering this upgrade, I highly recommend it and don't be afraid to do it yourself!!!

Oh, I didn't bother swapping the brake hoses. The length seems to be just fine. Plus, the clip that holds the line in place is a bi***.

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Old 02-04-2004, 10:02 AM   #2
eRic 02sc2
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SWAP THE rear BRAKE HOSES. a saturn brake engineer warned me about using drum hoses on the rear discs. yes, they will connect and 'work', but there is a risk of the drum hose ends popping out (and gushing brake fluid) of the caliper from suspension movement. the rear disc hoses have the metal section on the end for a reason. oh yeah i used russell speed bleeders in mine to make bleeding easy after i did the rear discos on my old 92 sc and now 96 sc2.

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Old 02-04-2004, 10:35 AM   #3
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I'm still on drum hoses, but I have a set of disc hoses I'm going to put on SOON. There IS a difference, like Eric says. I'll take a side-by-side photo when I do it.

Really, you should swap the lines.

...
-Andy

01 SL1 (2011-2014) 99 SW2 (2002-2009) 95 SL2 (1997-2002)
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Old 02-04-2004, 11:59 AM   #4
fogdrive
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You should get SST braided hoses. That way, you will not have to worry about replacing them again.

...
330K before a Hondog rear-ended me and totaled it out :(

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Old 02-04-2004, 03:49 PM   #5
JDub99SL2
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I am planning on putting on the steel lines that tirerack has sometime in the near future. I don't see how there can be such a big difference. I'm not engineer, though. Man, you've got me all paranoid. I was going to say that 80%+ of the braking is done up front, anyway, until I realized that if the actual hose 'popped off' there would be no hydraulic pressure --- er.... man, I may just walk to work. :-( Thanks ERIC! Lol.

Last edited by JDub99SL2; 02-04-2004 at 03:56 PM..

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Old 02-04-2004, 08:59 PM   #6
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19 months/20,000 miles on drum lines.

They aren't even close to touching the wheel or anything in that region.

...
Forced induction is rape.

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Old 02-04-2004, 09:30 PM   #7
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No - it's not that they TOUCH anything; they are just kinked REALLY tightly (or rather, more tightly than they should be), which causes premature wear.

...
-Andy

01 SL1 (2011-2014) 99 SW2 (2002-2009) 95 SL2 (1997-2002)
00 ROUSH Cougar V6 03 SVT Focus #2370 08 Mustang Bullitt #5389 2013 Fiat 500 Abarth

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Old 02-05-2004, 02:28 AM   #8
winc
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almost a year now on drum lines, just checked them again 2 weeks ago, still fine. not kinked at all as far as I can see. But I have the replacement disc ones just in case they do. I'll probably do the steel braided ones if I ever change them again. Bleeding is easy for me, I have access to that vacuum pump from snap-on for quick bleeding.

...
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Old 02-05-2004, 10:30 AM   #9
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drum hoses used on the rear discs shouldn't touch anything. the issue is when the rear suspension is hyperextended with the wheel fully drooped. that will straighten out the hose and could possibly pull the end of it out. make sure your parking brake is functional, just in case.

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Old 02-05-2004, 10:35 PM   #10
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Quote:
Originally posted by eRic 96sc2
SWAP THE rear BRAKE HOSES.

Eric, I know you and I have disagreed about this for years

I have had rear discs on the car for nearly 5 years, still using the drum lines. When I swapped to stainless lines, SPS sent me long (drum) ones, even though I specifically said I had disc brakes. In talking with other GM engineers (besides the one that Eric has talked to), there is not an issue.

and with the condition of the streets around me, my suspension gets VERY hyperextended.

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Old 02-07-2004, 10:46 AM   #11
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hey, i'm just going by what a saturn brake engineer warned me. i didn't want to prove him wrong (or right!) so i used the correct parts when i did mine.

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Old 02-07-2004, 02:36 PM   #12
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Yeah...better safe than sorry.

No worries...

We're just saying that the drum lines can work if you don't have the disc ones.

...
Forced induction is rape.

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