front brake question
Thread Starter
Instructor
Joined: Jul 2014
Posts: 163
Likes: 2
front brake question
the other day I broke a lug off the passenger side front rotor on my 77. the rotors were changed before I bought the car and only have a couple hundred miles on them since I bought it. so I pulled the rotor off which is set up like any other vehicle ive worked on. remove the dust cap, cotter pin ,nut bearing, retainer, and outside bearings. knocked the lug out of the rotor and replaced it. I was looking through a vendor catalog and was surprised to see that they only sell rotors that slide on the lugs for the front and back. my back ones are like that but what gives on the front? my car has 99000 miles on it never been wrecked ,and doesent appear to have been taken apart or changed in any way. it stops just a straight as an arrow no pull to either side. should I be concerned or is this something they changed in 77? thanks
Safety Car
Joined: Apr 2015
Posts: 4,887
Likes: 202
From: Jackson MS
the other day I broke a lug off the passenger side front rotor on my 77. the rotors were changed before I bought the car and only have a couple hundred miles on them since I bought it. so I pulled the rotor off which is set up like any other vehicle ive worked on. remove the dust cap, cotter pin ,nut bearing, retainer, and outside bearings. knocked the lug out of the rotor and replaced it. I was looking through a vendor catalog and was surprised to see that they only sell rotors that slide on the lugs for the front and back. my back ones are like that but what gives on the front? my car has 99000 miles on it never been wrecked ,and doesent appear to have been taken apart or changed in any way. it stops just a straight as an arrow no pull to either side. should I be concerned or is this something they changed in 77? thanks
Thread Starter
Instructor
Joined: Jul 2014
Posts: 163
Likes: 2
[QUOTE=wendellp601;1591296419]The rotor is riveted to the hub at the factory. The lug studs are actually pressed into the hub, not the rotor.[/
I was looking at those rivets and wondered what they were for. so where would you purchase this all put together? this car was restored in 2001 then put in a wharehouse and never moved until I bought it in the spring of 2014. I changed the calipers and rubber hoses but not the rotors as they were all new.
I was looking at those rivets and wondered what they were for. so where would you purchase this all put together? this car was restored in 2001 then put in a wharehouse and never moved until I bought it in the spring of 2014. I changed the calipers and rubber hoses but not the rotors as they were all new.
Safety Car
Joined: Apr 2015
Posts: 4,887
Likes: 202
From: Jackson MS
[QUOTE=sgt kohler;1591296481]
I've never seen any of the vendors offer these preassembled. There is a fairly recent thread on here about replacing rivets.
The rotor is riveted to the hub at the factory. The lug studs are actually pressed into the hub, not the rotor.[/
I was looking at those rivets and wondered what they were for. so where would you purchase this all put together? this car was restored in 2001 then put in a wharehouse and never moved until I bought it in the spring of 2014. I changed the calipers and rubber hoses but not the rotors as they were all new.
I was looking at those rivets and wondered what they were for. so where would you purchase this all put together? this car was restored in 2001 then put in a wharehouse and never moved until I bought it in the spring of 2014. I changed the calipers and rubber hoses but not the rotors as they were all new.
Melting Slicks
Joined: Apr 2009
Posts: 2,632
Likes: 112
From: Great Plains Iowa
The factory riveted the rotor to the hub (or spindle) THEN turned and ground the rotor and that's why you need to keep them in their original positions to prevent pumping air into the calipers.
Safety Car
Joined: Apr 2006
Posts: 4,057
Likes: 421
From: BC
If you check the online catalog from any of the Corvette vendors such as Corvette Central, they show those rivets for about 8 bucks extra along side their rotors. Some put them back together with the rivets and some leave them off. They are not really needed as long as you remember to check runout with the nuts on as they can't change position without removing the calipers.
Burning Brakes
Joined: Dec 2005
Posts: 992
Likes: 56
From: Baldwinsville, NY
http://www.bairs.com/
Blairs has a service to redo the front hub. New bearings, oil seal, rotor mounted and trued to hub. Many supporting vendors do.
Blairs has a service to redo the front hub. New bearings, oil seal, rotor mounted and trued to hub. Many supporting vendors do.
Thread Starter
Instructor
Joined: Jul 2014
Posts: 163
Likes: 2
http://www.bairs.com/
Blairs has a service to redo the front hub. New bearings, oil seal, rotor mounted and trued to hub. Many supporting vendors do.
Blairs has a service to redo the front hub. New bearings, oil seal, rotor mounted and trued to hub. Many supporting vendors do.
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Burning Brakes
Joined: Jul 2015
Posts: 823
Likes: 57
From: Austin TX
Duntov Motors sells new rotors with and without rivet holes. I'm pretty sure I've seen this from other vendors too. It's only an issue if you're concerned about factory appearance. The rivets have no purpose other than ease of assembly at the factory, where rotors are machined on the hubs prior to installation. I'm pretty sure I've read that riveted rotors have to be reinstalled in their exact same position on the hub to avoid problems with runout. You might want to search the forums before doing more work on those.