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#19871 04/20/2004 12:31 AM | Joined: May 2003 Posts: 21 Junior Member | | Junior Member Joined: May 2003 Posts: 21 | Took my 54 3100 out on the road after a complete frame off restoration. I put a disc brake kit on it and the front wheels are very tight. It has been sitting in the shop for about 6 months now and has a light coat of surface rust on the rotors.
What is the cure for these tight rotors. do I just drive it. Is there something to spray on it??
It is very noticable when I drive it, although I have only driven it about a mile.
Thanks
Jeff | | |
#19872 04/20/2004 1:31 AM | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | Drive it and try to avoid any hard braking until the pads are worn in. | | |
#19873 04/20/2004 6:07 PM | Joined: Jun 2000 Posts: 2,773 'Bolter | | 'Bolter Joined: Jun 2000 Posts: 2,773 | Try driving it around the block with one foot on the brake, just enough to give a slight drag. See what happens, If the rust has pitted, you need to have the rotors turned.
Fred
52 3600
69 C-10
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#19874 04/20/2004 7:33 PM | Joined: Sep 2002 Posts: 438 Shop Shark | | Shop Shark Joined: Sep 2002 Posts: 438 | Flight-
I won't assume you have discs on all four, but could it be th proportioning of line pressure to the front? It sounds like you need more road time to figure this out, but is there more "tightness" on the front as opposed to the rear? | | |
#19875 04/21/2004 3:52 AM | Joined: May 2003 Posts: 21 Junior Member | | Junior Member Joined: May 2003 Posts: 21 | Just surface rust, not pitted yet, seems to be resolving with each subsequent trip around the block. And you assumed correctly, disc/drum combo. The back ones rotate freely.
Thanks everyone so far for the help | | |
#19876 04/21/2004 3:59 AM | Joined: Aug 2000 Posts: 1,438 'Bolter | | 'Bolter Joined: Aug 2000 Posts: 1,438 | When I did my disc conversion, the floor board and toe board were out. Everything seemed fine. i went for a short drive and felt the front brakes binding. It turned out that there wasn't enought play in the pedal and the toe board was holding the break slightly.
I don't think a bit of surface rust would be detectable for dragging brakes.
Dennis
40 Chevy 1/2 ton
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#19877 04/21/2004 6:09 AM | Joined: Feb 2001 Posts: 1,897 Member | | Member Joined: Feb 2001 Posts: 1,897 | How full is the master cylinder resevoir?
There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!
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#19878 04/21/2004 3:20 PM | Joined: Jun 2001 Posts: 379 Shop Shark | | Shop Shark Joined: Jun 2001 Posts: 379 | You did not say what kind of mc you were using. Front discs should have a maximum 2# residual check valve while drums should have a 10#. If your mc/proportioning valve is intended for drum/drum instead of disc/drum, then you may well have binding. Verify that and that the correct ports are hooked up as part of your investigation.  | | |
#19879 04/22/2004 2:48 AM | Joined: May 2003 Posts: 21 Junior Member | | Junior Member Joined: May 2003 Posts: 21 | resevoir is full,
I will check the brack cylinder to Master cylinder adjustment tommorrow. That might be it. | | |
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