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Re: Torque specs for wheel lug nuts packard twelve
#11
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BDeB
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I believe that 3/4 refers to the wrench size for the hex head.

Wheel bolts used from 1935 (and possibly earlier) to 1955 had a 9/16-18 thread and hex head 3/4" across flats.
Threaded length approx. 1" and overall length 1-1/2"

Posted on: 9/1 21:54
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Re: Torque specs for wheel lug nuts packard twelve
#12
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PackardDon
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Big difference!

Posted on: 9/1 21:56
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Re: Torque specs for wheel lug nuts packard twelve
#13
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humanpotatohybrid
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Quote:

Wat_Tyler wrote:

Had a '65 Dodge that was baffling me until I recalled how Mopar over-engineered/thought some things like that.


Indeed, a classic Mopar "feature".

Posted on: 9/4 1:33
Owner of '55 Clipper Deluxe. Back window broken; installing a new one soon. Trying to get it started...
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Re: Torque specs for wheel lug nuts packard twelve
#14
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Tim Cole
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Really no need for snide remarks here.

Unfortunately the parts book doesn't specify the dimensions, so I would address your concern by taking off a drum with the wheel bolted to it and checking the depth of penetration of your bolts. However, I think those are blind holes so that won't work. An alternative is to stick a piece of wire or something into the hole to measure the depth. Your concerns are well founded as for the earlier cars Packard had a multitude of part numbers for those bolts.

If you want to size a fastener you can fit the open end of a wrench over the thread to determine your specification. For example if a 9/16 wrench fits the threaded portion that is a 9/16 bolt. If you have a thread gauge or a thread file you can then determine the thread pitch. On a thread gauge it is a number, say 21, or if you take it to a hardware or auto store that has open fastener stock you can find out that way.

Metric works the same way. A 6mm X 1.mm metric fits a 6mm wrench on the shank and, say, a 10mm wrench on the hex.

1/4-20 will take a 1/4 inch open end wrench on the shank and a 7/16 wrench on the hex. The 20 is the number of threads per inch which you can also count with a ruler. I miss the old USS/SAE systems where everything is in 16ths of an inch. Metric always bugs me because I hate French imperialism.

Posted on: 9/4 9:51
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Re: Torque specs for wheel lug nuts packard twelve
#15
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Steve
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"Metric always bugs me because I hate French imperialism".

Hmmmm, is this a snide remark?

Posted on: 9/5 17:14
Steve
Old cars are my passion

1951 Packard 200
1953 Packard Clipper Custom Touring Sedan
1955 Dodge Custom Royal Lancer Tri-tone
1966 Rambler Classic 770 Convertible
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Re: Torque specs for wheel lug nuts packard twelve
#16
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Brunn1939
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Thanks for the info. Will bring a bolt to the shop and ask the size of the thread. I do know its only bolted in about 1.1/4 inch (i checked the depth) in the brake drum. And yes the size i mentioned is the size of the wrench to take of the bolts.

I had 4 loose bolt over different wheels after 2000 miles of driving since i did them last time at 80ftlb.

Now i pulled them at 100 and drove 600 miles over the past weekend and they are still all tight.

I use a proper snap on for torque. So 80 clearly wasnt enough.

Posted on: 9/6 14:14
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Re: Torque specs for wheel lug nuts packard twelve
#17
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Wat_Tyler
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Quote:

Steve wrote:
"Metric always bugs me because I hate French imperialism".

Hmmmm, is this a snide remark?



LOL!!!


Actually, we missed out on the French Imperialism. Our number system is base 10, and most of us came with 10 fingers.


But, it is what it is, and it ain't what it ain't.

Posted on: 9/14 5:15
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Re: Torque specs for wheel lug nuts packard twelve
#18
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Tim Cole
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It sure is, but they deserve it. After all Vietnam was a French rubber colony. And that is putting it kindly.

Posted on: 9/14 8:03
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