Received the brake drums yesterday. Really impressed with the quality and I'm not talking about my staged photos on the couch.

6.5 lbs. vs. 12 lbs. each for cast iron.

Have you measured the inner diameter? Curious if they are turned used drums or NOS.

Those look new

Dean at Datsunparts does sell nice stuff and even works with shops that will make parts to his spec's. Mostly for Roadsters, but some parts for Z's as well.

I would agree that these are new.

19 hours ago, Zed Head said:

Have you measured the inner diameter? Curious if they are turned used drums or NOS.

I'm trying to find a caliper that will give me a good measurement but they definitely are new. I'll have to back off the adjustment screw a good bit when I install them.

Just thought of this but now they are here I'll replace the shoes and springs as well.

According to the FSM the standard inner diameter should be 228.6 with the wear limit of 230.0.

I'll report back when measured.

Still curious about origin. As I understand things the aluminum drums are discontinued from Nissan. So, it would have to be either NOS or an aftermarket reproduction. I don't see any casting ID marks like those on the originals so I assume they're aftermarket.

Not saying that they're bad, just curious. I wonder where things come from. Who made them? Probably no way to find out.

https://datsunparts.com/products/datsun-z-car-70-71-72-73-74-75-76-77-78-240z-260z-280z-510-rear-aluminum-finned-brake-drum-sold-as-pair-only-prepay-intro-offer-march-2025?_pos=4&_sid=0010228b6&_ss=r

NOTE: The company that makes these is the same company that makes rotor hats for the McLaren 12
"Dean, I got the new drums on Saturday and put them on the race car yesterday. They look to be a really nice product. Thanks." David W. Plott 1973 240Z ITS Class SCCA Mount Juliet, TN

This was on the drum search page but not the final page of the specific drum. Looks like an "off-shore" copy. I don't know how a new drum could be "engineered" in the US. Anyway, just keeping track of things going on. You'll be fine! Good luck.

https://datsunparts.com/search?q=drums&search=

Datsun Z Car 70-78 240Z-260Z-280Z, 510 Rear Aluminum Finned Brake Drum  6.5 lbs each drum as opposed to 12 lb each for cast iron versions. 43206-E4100 original Nissan number PRICE IS FOR A PAIR  AFTERMARKET US ENGINEERED Correct and proper...

Definitely offshore, nothing is made here anymore, but looks a hell of a lot better than my cracked drums. Just from my initial impressions the workmanship looks very good.