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Rotor hanging up on hub (LS1 swap, front)?

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Old May 17, 2008 | 10:28 AM
  #1  
KenV's Avatar
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From: Bakersfield, under a ton of dust...
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Engine: All Eights
Transmission: All kinds
Rotor hanging up on hub (LS1 swap, front)?

Hey all.

Finally I have the time to install Ed's LS1 kit, and while the passenger side rotor slips right on, there's interference on the driver side. I was able to force the rotor back off, and found that the cad plating is scuffed outboard of each wheel stud on the hub. My worry is that the hub may be stressed by the stud install. If it's normal then I'll just turn the hub a bit. Not easy since the hub is mounted, but I'll live.

I don't have my caliper here but both rotors hang up on that hub while slipping right on to the passenger side hub. Any thoughts? Thanks.

K
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Old May 17, 2008 | 06:09 PM
  #2  
Matthew91-Z28's Avatar
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From: Texas
Car: 1991 Z28 Convertible
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23 with Eaton posi
Re: Rotor hanging up on hub (LS1 swap, front)?

you can get the rotor flush on the hub by putting the wheel on and tightening down all bolts....then untighten, take off wheel and proceed with installation.
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Old May 17, 2008 | 06:16 PM
  #3  
KenV's Avatar
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From: Bakersfield, under a ton of dust...
Car: A few
Engine: All Eights
Transmission: All kinds
Re: Rotor hanging up on hub (LS1 swap, front)?

Thanks for the idea. I ended up taking a Dremel to the inside on the rotor where it rubs. The rotor references off the center of the hub so I figure that by being careful with the Dremel I'd be fine. It popped right on after a few passes.

I guess the hub simply wasn't turned down as far as the other one. No biggie. At least that part's over.
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Old May 18, 2008 | 08:25 AM
  #4  
ebmiller88's Avatar
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
Re: Rotor hanging up on hub (LS1 swap, front)?

Every rotor is slightly different so minor tweaks aren't uncommon. My machinist cuts the hubs to + or - .005" and they're usually right on. No biggie, glad you got them going.

Ed
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Old May 18, 2008 | 06:20 PM
  #5  
KenV's Avatar
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From: Bakersfield, under a ton of dust...
Car: A few
Engine: All Eights
Transmission: All kinds
Re: Rotor hanging up on hub (LS1 swap, front)?

Yeah, it was a quick fix. One sanding roll sacrificed to the Dremel gods and it went right on. Thanks for checking in on this one Ed.

K
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