Brake pad fit, Won’t fit? Wrong pad for application? |
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Brake pad fit, Won’t fit? Wrong pad for application? |
Dion |
Mar 5 2021, 07:06 PM
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#1
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RN Group: Members Posts: 2,767 Joined: 16-September 04 From: Audubon,PA Member No.: 2,766 Region Association: MidAtlantic Region |
I’m working on the front S calipers on the GT build and hit a snag.
The pads do not seem to be for this application. Wondering if different pads are warranted. I know these Porterfields have more meat on them. That could be the reason. The pistons are seated all the way in. (Fresh rebuild). I even tried moving them with a wooden dowel. They budge just enough to collapse seal slightly but when relaxed sit as they are. Am I doing it wrong? (IMG:style_emoticons/default/dry.gif) Help appreciated!! Note: no fluid in system yet. Any brake pad recommendations? Pics Attached thumbnail(s) Attached image(s) |
Superhawk996 |
Mar 6 2021, 11:56 AM
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#2
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914 Guru Group: Members Posts: 5,916 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Yup - you're good on rotors.
It's likely the noise isolator adding thinckness. Back in 70's - pads didn't usually have noise isolators. Just the bare backing plate. Noise fix was often "brake grease". Even if there was a isolator, they were often clip on affairs with limited effectiveness. Modern bonded constrained layer noise isolators are more way more effective than brake grease and clip on isolators of old. You would think Porterfield would have removed enough pad compound to offset the added thickness of the isolator. We used to machine pad compound all the time to insert thermocouples and/or for custom rotor setups. Easy to keep it all square with a mill. Can be also done sucessfully with careful measurement, marking / guide tape, and use of belt sander to keep the pads square and level. Use shop vac to suck up all the dust as you "sand" the pads. |
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