iron/housing/rotor id
#41
Does anybody have anything else to add? There's several Japanese symbols and characters on these rotors that I cannot read. I wonder if the answers lie there in being able to spot a definitive marker to know "what kind of rotor I've got".
I have many more pictures at the link http://bdc.cyberosity.com/pictures/RotorIdentification/ I can post for reference' sake.
B
I have many more pictures at the link http://bdc.cyberosity.com/pictures/RotorIdentification/ I can post for reference' sake.
B
#42
Some of us at one time or another may be forced to violate that rule just to get a motor in our personal car. For instance, I currently have an A and C weight rotor in my car.
I was told that I shouldn't worry about it, but I do.
Could some of you more experienced guys reply concerning some precautionary measures that I should take when I disassemble the motor? What should I be extra concerned about? E-shaft wear & tear, uneven or excessive bearing wear, etc?
Any info or elaboration on what BDC has said so far would be much appreciated.
Great thread.
TIA,
I was told that I shouldn't worry about it, but I do.
Could some of you more experienced guys reply concerning some precautionary measures that I should take when I disassemble the motor? What should I be extra concerned about? E-shaft wear & tear, uneven or excessive bearing wear, etc?
Any info or elaboration on what BDC has said so far would be much appreciated.
Great thread.
TIA,
#43
#44
Brian,
In the 2nd picture you posted, the katakana symbol next to the "B" means "TA".
If you have any others, take pics and I can read them or get my wife to read them if I don't know the symbol myself.
In the 2nd picture you posted, the katakana symbol next to the "B" means "TA".
If you have any others, take pics and I can read them or get my wife to read them if I don't know the symbol myself.
#45
Originally Posted by BDC' date='Feb 14 2004, 01:38 PM
I've always been puzzled when it came to why there's a "front rotor" as well as a "rear" even though they have the same weight, compression, etc. Perhaps this thread will help that.
#46
The Japanese symbols are all katakana symbols, and you easily get a "katakana chart" to read all of them. They don't denote anything except for seal position. You'll see three of them per side to keep track of side seal position.
-Ted
-Ted
#47
the 12a rotors are front and rear, the chamber shape actually differs between them. the 13b rotors are all the same part number front and rear, except for the renisis; because of the cut on the side of the rotor (miter?)
#48
pics!
70-73 12a rotor, note the dual side seals and huge apex slot
83-85 rotor, you can tell because its got the N in addition to the R or F,
i dont have any 74-82 rotors to photo
can you spot the difference in chamber shape? d'oh i just noticed its 2 rears! i'm fired!
12a vs 13b, the 13b rotor is an 86-88 na one. the 70-73 rotors are the same front and rear
70-73 12a rotor, note the dual side seals and huge apex slot
83-85 rotor, you can tell because its got the N in addition to the R or F,
i dont have any 74-82 rotors to photo
can you spot the difference in chamber shape? d'oh i just noticed its 2 rears! i'm fired!
12a vs 13b, the 13b rotor is an 86-88 na one. the 70-73 rotors are the same front and rear
#49
70-73 12a, note the rounded part where it doesnt say mazda. these are the carbon seal engines
heres a 76-80 rotor housing also 12a, notice it now says mazda on it. it can be id'ed by the ribs on the top
comparison of exhaust ports, the 70-73 is the big one
heres an 81-85 housing, notice the eyebrows on the spark plug holes
heres a 76-80 rotor housing also 12a, notice it now says mazda on it. it can be id'ed by the ribs on the top
comparison of exhaust ports, the 70-73 is the big one
heres an 81-85 housing, notice the eyebrows on the spark plug holes