1986-92 13B Rebuild PartsTo order any of these parts, go back to the main motorsports webpage and login. Click on the Order More Item icon under the QUICK ORDER section on the top right of the Motorsports webpage (while logged in). You will see several blank lines at a time, to type in your part numbers. Click the SUBMIT button at the bottom of the page. This will add the items and return to your cart. You can repeat the process if you have more items to add.The following parts are recommended for all 1986-92 13B rebuilds..The parts in the top blue section may be ordered as one part number K-8688-3B-STK. Parts need to be ordered individually if ordering ceramic apex seals. We do not sell 2mm carbon apex seals.
| DESCRIPTION | PART NUMBER | QTY | NOTES |
| APEX SEAL – STOCK | N351-11-C00C | 6 | Click here for optional Apex Seals & Springs |
| APEX SPRING – INNER | N326-11-C04A | 6 | |
| APEX SPRING – OUTER | N326-11-C06C | 6 | |
| CORNER SEAL | N326-11-C20A | 12 | Includes rubber plug (N326-11-C22A) |
| CORNER SEAL SPRING | NF01-11-C24 | 12 | Washer type from 3rd gen RX-7 |
| SIDE SEAL | N3Y1-11-C11 | 12 | |
| SIDE SEAL SPRING | N326-11-C17 | 12 | |
| OIL SEAL SET (STEEL) | N3Z1-11-S10A | 4 | 1 set is 1 inner and 1 outer. Needs 4 sets per engine. |
| O-RING – OIL SEAL OUTER | 0820-11-341 | 4 | Green |
| O-RING – OIL SEAL INNER | 1202-11-343 | 4 | Green – do not use 8341-11-343 black o-rings. |
| SPRING – OIL SEAL FRONT INNER | N225-11-351 | 2 | |
| SPRING – OIL SEAL REAR INNER | N225-11-361 | 2 | |
| SPRING – OIL SEAL FRONT OUTER | 4352-11-353 | 2 | Competition part. Heavy-duty spring provides increased pressure |
| SPRING – OIL SEAL REAR OUTER | 4352-11-363 | 2 | Competition part. Heavy-duty spring provides increased pressure |
| ENGINE GASKET SET | 8DF1-10-271A | 1 | 86-88 GASKET SET If intake and exhaust gaskets don’t matter, then this is the set to use, even for 89-92. 89-92 N/A and all 87-92 Turbo kits are no longer available. |
| MAIN SEAL, FRONT | 0820-10-605 | 1 | |
| MAIN SEAL, REAR | 1668-10-556A | 1 | |
| PILOT BEARING | N326-11-D03 | 1 | |
| PILOT BEARING SEAL | 1881-11-404A | 1 | |
| OPTIONAL INSTALLS | |||
| DESCRIPTION | PART NUMBER | QTY | NOTES |
| APEX SEAL – CERAMIC 1 PC 2mm | 0000-01-9103 | 2 | Comes with precut dual apex seal springs. 3 seals per box. |
| APEX SEAL – CERAMIC 2PC 2mm | 0000-01-9113 | 2 | Comes with precut dual apex seal springs. 3 seals per box. |
| APEX SEAL – CERAMIC 1PC 3mm | 0000-01-9105 | 2 | Comes with precut dual apex seal springs. 3 seals per box. |
| APEX SEAL – CERAMIC 2PC 3mm | 0000-01-9115 | 2 | Comes with precut dual apex seal springs. 3 seals per box. |
| We do not carry 2mm carbon apex seals | |||
| ROTOR BEARINGS – STOCK | N3A1-11-B11 | 2 | 3.0mm (-0.005 to -0.010) |
| N3A2-11-B11 | 2 | 3.0mm (0.00 to -0.005) | |
| N3A3-11-B11 | 2 | 3.0mm (+0.005 to 0.000) | |
| ROTOR BEARINGS – COMPETITION | 4801-11-111 | 2 | Competition bearings have 0.01 inch deeper oil groove and provide 0.0005 inch more clearance than stock bearings. Thinner overlay material improves bearing service life. |
| MAIN BEARINGS – STOCK | 0820-10-502B | 2 | |
| MAIN BEARING – COMPETITION REAR | 4801-10-502 | 1 | Use in place of stock rear bearing. 3-window type. Recommended for any engine used at 8000 rpm and above. Increases oil flow to the inside of eccentric shaft and to rotors. |
| ECCENTRIC SHAFT | N326-11-D00C | 1 | Stock |
| COUNTERWEIGHT – REAR | N351-11-521 | 1 | From A/T for use with lightened flywheels |
| ROTOR HOUSINGS | |||
| Front | N326-10-B10 | 86-88 N/T | |
| Rear | N326-10-B50C | 86-88 N/T | |
| Front | N332-10-B10 | 87-88 TURBO | |
| Rear | N332-10-B50B | 87-88 TURBO | |
| Front | N350-10-B10A | 89-92 N/T | |
| Rear | N350-10-B50A | 89-92 N/T | |
| Front | N318-10-B10A | 89-91 TURBO | |
| Rear | N318-10-B50C | 89-91 TURBO | |
| Search online catalog for intermediate housings. | |||
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