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Engine
Rotors
These are new factory rotors and come
supplied with new rotor bearing installed.
| 12A Engines | ||
| Application | Part Number | |
| 76-82 Front | 23-1030-1480 | |
| 76-82 Rear | 23-1130-1480 | |
| 83-85 Front | 23-1030-N225 | |
| 83-85 Rear | 23-1130-N225 | |
| 13B Engine | ||
| Note: All 13B rotors are the same front or rear | ||
| Application | Part Number |  |
| 74-85 | No Longer
Available (Use 86-88 or 89-92 Rotors, Rotor Kit and Counterweights/flywheel) |
|
| 86-88 (Non-turbo) | 11-B100-N3Y6 | |
| 86-88 (Turbo) | 11-B10A-N3Y2 | |
| 89-92 (Non-turbo) | 11-B10A-N3Y5 | |
| 89-92 (Turbo) | 11-B10B-N3Y8 | |
| 93-95 (Twin Turbo) | 11-B100-N3YA | |
| Rotor Kit | ||
| (All seals & springs
necessary for 2 rotors) Each kit does (2) Rotors, includes: Apex Seals, Apex Seal Springs, Corner Seals, Corner Seal Springs, Corner Seal Rubber Inserts (where applicable), Oil Control Rings, Oil Control Ring "O"Rings, Oil Control Ring Springs, Side Seals and Side Seal Springs. |
||
| Year/Application/Type of Apex | Part Number |  |
| 12A (74-85) w/steel apex seals | MZTX-12-ROTOR | |
| 12A (74-85) w/carbon apex seals | MZTX-12-ROTORC | |
| 13B thru 85 w/steel 3mm apex seals | MZTX-13-ROTOR | |
| 13B thru 85 w/carbon 3mm apex seals | MZTX-13-ROTORC | |
| 13B 86-92 w/2mm steel apex | MZTX-13-ROTORL | |
| 13B 86-92 w/2mm carbon apex seals | MZTX-13-ROTORLC | |
| 13B 93-95 TT w/2mm steel apex seals | MZTX-TT-ROTOR | |
Rotor Parts
Note: Images on this page are NOT to scale
| Apex Seals | |||
| Note: The carbon apex seals are designed for
racing only. They seal better above 8k rpm due to their lighter weight. They do
NOT last very long (20k miles on the high side), and do NOT seal well at low
rpm's (like starting and at idle). Not recommended for turbo, supercharged, or nitrous engines. All part numbers are for ONE seal, six seals needed per 2-rotor engine. |
|||
| Engine / Years | Material | Part Number | Image |
| 12A (74-85) | Steel | 11-300B-N201 |  |
| Carbon | 11012 |  |
|
| 13B (84-85) 3mm | Steel | 11-300A-N304 | |
| Carbon | 11013 | |
|
| 13B (86-95) 2mm | Steel 2-piece Mazda |
11-C00C-N351 |  |
| Carbon | 11011 |  |
|
| Other Aftermarket Apex Seals | |||
| 13B 2mm | Two-Piece
Steel Aftermarket |
112N326 |  |
| Ceramic Seals | 13B 2mm | 01-9103-0000 |  Note!!: These cost about $300 EACH ! -- that means about $1800 (yes!) for 6 seals to do a 2-rotor engine. |
| 13B 3mm | 01-9102-0000 | ||
| 12A | 01-9101-0000 | ||
| Apex Seal Corner
Triangle piece only
When you purchase a new apex seal, it comes with this piece, but they are also available separately. |
For 76-85 3mm Apex | 11-302A-N201 |  |
| For 86-95 2mm 3-Piece Apex Seals | No Longer Available |  |
|
| Notes on Apex Seal Side Piece (74-85 only) | ||
| (This triangular piece is included with any NEW apex seal, but is also available separately) | ||
| Note: The original OEM apex seals 74-76? had the corner piece with a squared-off tip that sat completely below the apex seal. This apex seal has a square end and is longer. The later (78-85) triangular piece has a rounded tip, and sits along the apex seal such that it is actually the last part of the seal length. This apex seal has a rounded end. These two types are NOT interchangeable. The early style is very rare, and all the APEX SEALS we sell are the later type. We have always strongly recommended buying NEW apex seals, in which case this entire discussion is not needed. | ||
| Apex Corner Piece ( VERY Early with squared corner) | 11-3020-1202 |  |
| Apex Corner Piece (Later with rounded corner, as listed above with the apex seals) | 11-302A-N201 |  |
| Apex Seal Springs | |||
| Note: All part numbers are for ONE spring, six springs needed per 2-rotor engine (86-95 with steel apex seals need 6 inner and 6 outer springs). | |||
| Engine / Year | Application | Part Number | Image |
| 12A (74-85) | For steel apex | 11-304B-1011 |  |
| For carbon apex | 11016 |  |
|
| 13B (74-85) | For steel apex | 11-3040-1757 |  |
| For 3mm carbon apex | 11017 |  |
|
| 13B (86-95) | Big Outer for steel | 11-C06C-N326 |  |
| Small Inner for steel | 11-C04A-N326 |  |
|
| For 2mm carbon apex | 11015 |  |
|
| Corner Seals and Rubber Inserts | |||
| Application/Years | Notes | Part Number | Image |
| All Early (OEM
pre-'76) (for 3mm apex seals) |
Does not use insert | 11-3210-1011 |  |
| All 76-85 3mm | Does not include insert | 11-3210-N225 |  |
| Rubber Insert for above corner seal | 11-3220-N201 |  |
|
| All 86-95 2mm | Includes rubber insert | 11-C20A-N326 |  |
| Rubber Insert for 86-95 corner seal | 11-C22A-N326 |  |
|
| Corner Seal Springs | All 74-92 | 11-323A-1202 |  |
| All 93-95 | 11-C240-NF01 |  |
|
| Race Corner Spring, All 74-92 | 11-C240-NF01 | ||
| Side Seals and Side Seal Springs | |||
| Description | Application | Part Number | Image |
| Side Seal | 79-85 All | 23-1510-8871 |  |
| 86-95 All | 11-C110-N3Y1 |  |
|
| Side Seal Spring | 79-85 All | 11-3170-0820 |  |
| 86-92 All | 11-C170-N326 | ||
| 93-95 | 11-C170-NF01 | ||
| Rotor Side Oil Seals (Oil Control Rings) and the "O" Rings that go inside them | |||
| Note: Mazda does the quantitiy per part number on
the oil control rings (NOT the "O" rings) different than about any other engine
parts. One part number is a PAIR of oil control rings (one inner one
+ one outer one). Meaning you need 4 of part number 11-S10A-N3Z1 to
build one 2-rotor engine. The "O" rings are ONE per part number -- 4 of each needed per 2-rotor engine. |
|||
| Description | Part Number | Image | |
| Rotor Oil Seal Pair
(79-95 housings) Note: 4 Pairs needed for a two rotor engine |
11-S10A-N3Z1 (Pair) |
 |
|
| Oil
Seal O-Ring We now offer both Mazda OEM O-Rings and Aftermarket O-rings |
|||
| Mazda Factory O-Rings
Note: Mazda keeps alternating the color on the outer "O" rings between green and black. They both seem to work quite fine, we just never know which are coming in on any given stock order. These are sold individually- you need 4 large and 4 small to do one 2-rotor engine. |
|||
| Small diameter for inners | 11-3410-0820 |  |
|
| Large diameter for outers | 11-3430-1202 |  |
|
| Oil Control Ring Springs | |||
| These all
"look" the same - no reason for multiple large images so just this one. The
outer ones are larger diameter than the inner ones. The "location" of the springs on the rotors is color coded. Each part number is ONE spring -- two of each needed per 2-rotor engine. |
 |
||
| Location/Type | Color Code | Part Number | Image Note: Image colors are only "close". |
| Front Inner | White | 11-3510-N225 |  |
| Front Outer | White | 11-353A-1011 | |
| Rear Inner | Mazda Blue | 11-3610-N225 |  |
| Rear Outer | Mazda Blue | 11-363A-1011 | |
| Front
Outer Competition |
Ivory (not yellow) |
11-3530-4352 |  |
| Rear
Outer Competition |
Powder Blue | 11-3630-4352 |  |
| Notes on Apex Seal Side Piece (74-85 only) | |
| (This triangular piece is included with any NEW apex seal, but is also available separately) | |
| Note: The original OEM apex seals
74-76? had the corner piece with a squared-off tip that sat completely below
the apex seal. This apex seal has a square end and is longer. The later (78-85)
triangular piece has a rounded tip, and sits along the apex seal such that it
is actually the last part of the seal length. This apex seal has a rounded end.
These two types are NOT interchangeable. The early style is very rare, and all
the APEX SEALS we sell are the later type. We have always strongly recommended
buying NEW apex seals, in which case this entire discussion is not needed.
Those older styles are now so rare, we no longer even have any of the pieces here to take picutes of. |
|
| Apex Corner Piece ( VERY Early with squared corner) | 11-3020-1202 |
| Apex Corner Piece (Later with rounded corner, as listed with the apex seals) | 11-302A-N201 |
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