brake bolt ?????

[stage2ROUSH]

So my car has the Baer rear rotor upgrade ( stock calipers) any way the top bolt the holds the caliper to the bracket decided to " dissapear" ?? don't ask how I'm not sure. I went to my local ford dealer and got new bolts, they are about 1/2 inch shorter than the bolt that is still there{ because of the bracket that extend's the stock caliper out} , you guys think maybe putting some locktight and the shorter bolt would be ok, or should I try and get the same length bolt ?????? thanks for all & any thoughts.

[Steve1968LS2]

Kind of depends.. how much of the bolt is in the hole?

In other words does the shorter bolt go all the way though the threaded hole?

[stage2ROUSH]

no, it looks like maybe half goes in

[stage2ROUSH]

maybe a little more than half

[stage2ROUSH]

the longer bolt stops even at the end of the threaded hole,

[ArtosDracon]

Get the longer bolt, and make sure it's a grade 8 or better, 10.9 would be much better. Your brakes are one thing not to fool with. And I would blue locktite them too, I always do on brakes.

[Steve1968LS2]

Get the longer bolt, and make sure it's a grade 8 or better, 10.9 would be much better. Your brakes are one thing not to fool with. And I would blue locktite them too, I always do on brakes.

What he said..

That caliper bracket is under HUGE stress. I had a bolt work it's way out of my wilwood setup at Buttonwillow.. let's just say that when the other bolt sheered off it wasn't pretty.

Get a longer bolt of the best grade possible and use a dab of red loctite.

The shorter bolt could get you home in a pinch, but I would swap it as soon as possible. You need it to go all the way through the threaded hole.

[ArtosDracon]

I had a bolt work it's way out of my wilwood setup at Buttonwillow.. let's just say that when the other bolt sheered off it wasn't pretty.

Yikes!

That's a and hope no one notices that your pants are wet when the car finally stops, type of situation.

[dipren443]

Get the longer bolt, and make sure it's a grade 8 or better, 10.9 would be much better. Your brakes are one thing not to fool with. And I would blue locktite them too, I always do on brakes.

To avoid any confusion with this info...

Grade 8 is a classification associated with SAE fasteners.

10.9 is a classification associated with metric fasteners. Metric fasteners have a higher strength classification available as well (12.9).

[ArtosDracon]

To avoid any confusion with this info...

Grade 8 is a classification associated with SAE fasteners.

10.9 is a classification associated with metric fasteners. Metric fasteners have a higher strength classification available as well (12.9).

Thank you for that, I had forgotten the difference was SAE vs Metric. Isn't there a grade 9 for SAE besides the ARP chromoly that's rated to 180K?

[dipren443]

Thank you for that, I had forgotten the difference was SAE vs Metric. Isn't there a grade 9 for SAE besides the ARP chromoly that's rated to 180K?

Yes, there is a Grade 9. They aren't very common, so I didn't even bother mentioning it. It isn't just for ARP. These standards are driven by SAE, but unlike Metric 12.9, SAE Grade 9 isn't very common.

If you had to have some Grade 9 hardware, I would look at aircraft suppliers.