Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: ericconn on January 23, 2012, 08:50:08 PM

Title: What year are these rotors?
Post by: ericconn on January 23, 2012, 08:50:08 PM
Hi, my dad used to run a shop that worked on a lot of imports and I came  across some Mazda rotors that are NOS still in their original  packaging. I can\'t find a part manual anywhere and searching online  hasn\'t turned up anything. I\'d like to eventually sell them to someone  who needs them and not just scrap them. Part number for one is:  2090-23-113B. Other one is probably the same part. Thanks a lot for any  help!
  (http://wecphoto.smugmug.com/photos/i-XDZmDqg/0/X2/i-XDZmDqg-X2.jpg)

(http://wecphoto.smugmug.com/photos/i-rxvXTGz/0/X2/i-rxvXTGz-X2.jpg)

(http://wecphoto.smugmug.com/photos/i-R5Qq44t/0/X2/i-R5Qq44t-X2.jpg)

(http://wecphoto.smugmug.com/photos/i-ZTz9JLr/0/X2/i-ZTz9JLr-X2.jpg)
Title: What year are these rotors?
Post by: TRIND-FD on January 23, 2012, 10:03:34 PM
Says fc 13b on the box ;)
Title: What year are these rotors?
Post by: m1tch on January 23, 2012, 10:05:21 PM
What are the weight letters? If they are a matched pair they could be useful to someone!
Title: What year are these rotors?
Post by: Brett on January 23, 2012, 10:30:15 PM
Do you have any pictures of the rotor faces, so i can see the pocket...?
Title: What year are these rotors?
Post by: m1tch on January 23, 2012, 10:43:15 PM
You thinking low compression series 4 rotors?
Title: What year are these rotors?
Post by: HaywardRotary on January 24, 2012, 10:36:44 AM
they are very early rotors and are either 12a or 10a due to the double side seals.
12a rotors are 70mm width,10a are 60mm width.
Regards
Carl
Title: What year are these rotors?
Post by: ericconn on January 25, 2012, 12:26:11 AM
They\'re at my mom\'s house, I\'ll get photos of them the next time I\'m up there.
Title: What year are these rotors?
Post by: HaywardRotary on January 25, 2012, 02:25:40 PM
On the early 12as and 10as you can see the apex seals were six wide. These rotors are clearly that way too.