Author Topic: Brake Drums  (Read 1108 times)

jneely

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Brake Drums
« on: June 08, 2017, 07:57:16 PM »
Folks,

I'm hoping for some help to identify what I have here. I need new rear brake drums. I bought a pair of NORS Century 9x2 drums on ebay, listed for an International Scout.

I understood that the 2wd Scouts had 5 bolt rear drums, and 4 bolt fronts. I understood the front drums to fit an Aero rear drum.

The parts I got do not fit the rear hubs. The center pilot hole in the drum is much larger than the rear hub. However, they fit on the front hubs. So, I think these parts were listed incorrectly, but still perhaps useful to me. There are some discrepancies, though, so I'm hoping someone may recognize the parts and indicate whether or not they would work for me. My car is enough taken apart that I can't easily confirm fitment.

The profile is different. If you looked at a section view, the original Aero drums drop back outside of the hub. The replacement drums are more or less flat, but they don't hit the wheel, so I think it's fine. What has me concerned is the depth. With a ruler overlaid, the original hub surface is slightly deeper. It's around 0.180", but hard to get a precise measurement when the hub is still swaged in. I'm afraid there may be a bit of a gap between the backing plate when it's all together.

Any idea on what I have? Does it look like a Scout drum? Does it look like a DJ front or rear drum? Any help appreciated.
LM16094
Willys Aero-Eagles
And a few old Fords

MarkH

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Re: Brake Drums
« Reply #1 on: June 09, 2017, 09:21:48 AM »
From what I see in the listings, the front drums from a 2WD drive Scout are direct replacements to Aero fronts only. I think they also fit the 60's postal jeeps and a few other vehicles. They are hard to find and almost always expensive when they turn up. The shoes don't run all the way to the rim on OEM drums so I'd guess from your measurements they will have full contact on the replacements.
If your OEM fronts are still good then save the Scout drums or you could likely easily resell them.

Aero rear drums are different from the fronts but usually easier to find and cheaper. The Century replacements I found for the rear are numbered C 2301
Fully restored '54 Aero Lark
Rusty '58 Austin Healey 100-Six
Barely running'74 Chevelle Malibu

jneely

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Re: Brake Drums
« Reply #2 on: June 09, 2017, 02:58:21 PM »
Thanks Mark

I don't know why, but I had written down that it was the rear drums that interchanged with Scout.

In any case, I'm definitely going to hang on to these. My front drum takeoffs aren't bad, but are at the service limit (0.060" diametral), so I'll just replace everything.

The hunt continues for rears, then. I've found NOS parts available at ~$200/ea, but that's pretty tough to swallow.
LM16094
Willys Aero-Eagles
And a few old Fords

vettelang

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Re: Brake Drums
« Reply #3 on: June 12, 2017, 05:33:23 PM »
The rears are 9 inch by 1.75 inch. The fronts are 9 inch by 2 for 54, they were 1.75 in 52 / 53 I believe. I found some linings that were listed for a Nash (1221). So there are others out there. Good luck.