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Caliper Mounting Tabs, Hole Diameter

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Old Nov 26, 2009 | 01:13 AM
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St. Jude Donor '11-'12-'13-'14-'15
Default Caliper Mounting Tabs, Hole Diameter

Does anyone, by chance know the size of the hole in the Caliper Mounting tabs on the Hub? I need to do some critical measurements for a Big Brake kit and I need to insert a rod the exact diameter of the mounting holes to take some measurements off of....

Long shot I know...

Have a Great Thanksgiving!
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Old Nov 26, 2009 | 05:43 AM
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I just took my uprights off a couple of days ago. I'll bring one to work today and measure it for you. We're not allowed to lounge around today like you guys are. Happy Thanksgiving!
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Old Nov 26, 2009 | 06:30 AM
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Hey someone has to keep the machine turning!

I greatly appreciate it! You ever want any LED work done or if your HVAC Display peters out, hit me up. You get a Freebie!

Tim
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Old Nov 26, 2009 | 04:34 PM
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OK Tim, I measured the hole diameters, the distance between them, their distances out from the center of the hub, and how much the mounting tabs are offset inboard from the hub face. Made a nice little sketch. And forgot it at work.

I'll scan the drawing in for you tomorrow, but...

**from my (bad)memory**

The mounting holes were .574" diameter, 5.024 between them, on a 4.200 circle (both are 4.2" from the center of the hub). The mounting ears are exaxtly 1.000 thick, and the outer face of the ear is 2.420" inboard of the mounting face of the hub (what the rotor fits against).

I'd hold off ordering ur custom carbon rotors and forged 8 piston monoblock calipers until I check how good my memory is...

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Old Nov 26, 2009 | 05:44 PM
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Damn and I had my Penny jar all ready to bust open too to get those carbon rotors ordered and on a plane!

Hey I REALLY appreciate it!!! I owe you one, maybe two!

Hole diameter .574".... Now I just have to find a rod that's .547" in diameter!

Tim
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Old Nov 26, 2009 | 10:16 PM
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Originally Posted by tstar
Damn and I had my Penny jar all ready to bust open too to get those carbon rotors ordered and on a plane!

Hey I REALLY appreciate it!!! I owe you one, maybe two!

Hole diameter .574".... Now I just have to find a rod that's .547" in diameter!

Tim
.574, unless I tell you otherwise 2morrow. What are you trying to measure. Maybe I can measure it for you in the toolroom I treat as if it were my very own...

All the crap in my car still works, thank God, but I'll keep you in mind when that changes. I read some of your LED threads, and it really made
me want to change out some of the lights in my interior. I chilled on the idea a little when I understood that LED's have a relatively focused output. Appearently, if the angle is too big, you won't see too much? Is there anything you can do to diffuse the light a little?

Tom.
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Old Nov 27, 2009 | 02:28 AM
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PM me your EMail address and I'll send you the .pdfs on the instructions for what they need measured. They also need the distance from the face of the hub to the face of the mounting tabs.

You can spread the light beam out pretty well by cutting the tip off the LED.

Uncut;


Cut;


Tim
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Old Nov 27, 2009 | 05:29 PM
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I don't think a professional draftsman would even wipe his a$$ with a drawing like this..but it's got all the info you need. My memory really does suck, though!

Tom

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Old Nov 28, 2009 | 05:31 AM
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AWESOME! But I need to wait for you to verify the measurements right????

Tom if you store your Vette, send me all your components and tell me what Color LEDs you want. All I ask is that you cover the LED cost and shipping.

Tim
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Old Nov 28, 2009 | 12:17 PM
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Originally Posted by tstar
AWESOME! But I need to wait for you to verify the measurements right????

Tom if you store your Vette, send me all your components and tell me what Color LEDs you want. All I ask is that you cover the LED cost and shipping.

Tim
Thanks for the gracious offer Tim! I'm still sittin in the fence with the LEDs. I wish I could see what it looks like in person. If I go this way though, I'll hit you up for sure!

The dimensions in the drawing above are all correct. There are certainly tolerances associated with all of them, so yours won't be *exactly* like mine. Hell, all four uprights on MY car would probably measure a little different. The tolerances are probably pretty tight, though.

Good luck. Let me know if there's anything else I can help with!



Tom.
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Old Nov 28, 2009 | 08:12 PM
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Thanks for the update and you're very gracious!

One Q... and I feel stupid asking this as I should know it but I assume this is for the Front only correct?? I'll just need to get off my duff and do the rears now.

Tim
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Old Nov 28, 2009 | 08:21 PM
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Tim, all four are the same, as far as these dimensions go. The front left upright is used on the right rear, and the front right is used on the left rear. GM cost cutting, I guess!

Tom
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Old Nov 28, 2009 | 08:25 PM
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Sounds good to me, you did ALL my work! Now I do owe you!

Do you store your Vette up there in the big North?

Tim
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Old Nov 29, 2009 | 12:29 PM
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Originally Posted by tstar
Sounds good to me, you did ALL my work! Now I do owe you!

Do you store your Vette up there in the big North?

Tim
Yeah, she goes into hiding during the winter...usually ends up looking something like this. I like to think of it as a form of therapy.

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Old Dec 13, 2009 | 06:45 AM
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I just caught this last post... man! That's a mess!!!! Make sure you clean all that junk up before you store your Vette!



Tim
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