What did you do with your Z today V (ON TOPIC DISCUSSION ONLY)

Rusty · 01-19-2018, 08:19 PM

Quote:

Originally Posted by BoneZ

While doing my brakes, I had a couple bolts that were fighting me to come off. They are rather corroded. I don't really want to use an anti seize because I know that can screw up the torque rating. Any thoughts on this? What's best to do?

Your options.
1. Reuse bolt as is.
2. Chase the threads with a die to clean up.
3. Use a little bit of anti-seize to help the thread.
4. Get a new bolt.

I've done all 4 at one point or another in my life.

What is the bolt for? Caliper bracket to knuckle?
If that is what the bolt is for. And by looking at the head of the bolt. The flank of the face doesn't look to healthy. So I would pick option 4. Because of the flank starting to round off.But I don't know what the rest of the head looks like.

God-Speed · 01-20-2018, 07:52 AM

Quote:

Originally Posted by Rusty

Your options.
1. Reuse bolt as is.
2. Chase the threads with a die to clean up.
3. Use a little bit of anti-seize to help the thread.
4. Get a new bolt.

I've done all 4 at one point or another in my life.

What is the bolt for? Caliper bracket to knuckle?
If that is what the bolt is for. And by looking at the head of the bolt. The flank of the face doesn't look to healthy. So I would pick option 4. Because of the flank starting to round off.But I don't know what the rest of the head looks like.

Get four new ones. You will thank yourself in the long run!!

sx moneypit · 01-20-2018, 08:00 AM

Quote:

Originally Posted by God-Speed

Get four new ones. You will thank yourself in the long run!!

BoneZ · 01-20-2018, 08:52 AM

Quote:

Originally Posted by God-Speed

Get four new ones. You will thank yourself in the long run!!

I'll get new ones. I see a 6 on the bolt head. Are these hardened? I know usually the hardened bolts have lines on them.

MadSciSnails · 01-20-2018, 09:03 AM

Quote:

Originally Posted by BoneZ

I'll get new ones. I see a 6 on the bolt head. Are these hardened? I know usually the hardened bolts have lines on them.

Metric fastener grading is a little different. 5.6, 8.8, etc. I'm not certain about this specific bolt, but I'd suspect it would be case hardened.

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BoneZ · 01-20-2018, 09:26 AM

Quote:

Originally Posted by MadSciSnails

Metric fastener grading is a little different. 5.6, 8.8, etc. I'm not certain about this specific bolt, but I'd suspect it would be case hardened.

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I got 8.8 and a tap.

BoneZ · 01-20-2018, 10:11 AM

Quote:

Originally Posted by MadSciSnails

Metric fastener grading is a little different. 5.6, 8.8, etc. I'm not certain about this specific bolt, but I'd suspect it would be case hardened.

Sent from my SM-N950U using Tapatalk

It's not a metric bolt though. 1/2"-20
Edit: nm... you said metric grading.

BoneZ · 01-20-2018, 11:15 AM

Quote:

Originally Posted by BoneZ

It's not a metric bolt though. 1/2"-20
Edit: nm... you said metric grading.

Well actually. The picth appears to be the same on these things, but the bolt itself is about half a millimeter wider. These aren't going to work.

MadSciSnails · 01-20-2018, 02:35 PM

Quote:

Originally Posted by BoneZ

Well actually. The picth appears to be the same on these things, but the bolt itself is about half a millimeter wider. These aren't going to work.

I was thinking it's was a bit odd to have a standard fastener on a modern car. Particularly one of Asian origins.

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Ghostvette · 01-22-2018, 08:01 AM

Quote:

Originally Posted by BoneZ

It's not a metric bolt though. 1/2"-20
Edit: nm... you said metric grading.

That should be a 12mm x either 1.25 or 1.50 thread pitch. The car is metric, so a 1/2" - 20 would be totally wrong.

See if some store has a thread pitch gauge and get one in metric & SAE. It will save accidentally destroying a bolt...

BoneZ · 01-22-2018, 09:31 PM

Quote:

Originally Posted by Ghostvette

That should be a 12mm x either 1.25 or 1.50 thread pitch. The car is metric, so a 1/2" - 20 would be totally wrong.

See if some store has a thread pitch gauge and get one in metric & SAE. It will save accidentally destroying a bolt...

It was M12 1.25... they all were. Bracket bolts, caliper pine, lug nuts. I got the right tap and die and chased every one of them. Car reassembled like buttah.

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