1976-85 13B Rebuild Parts
The following parts are recommended for all 1976-85 13B rebuilds. Certain upgraded parts have been substituted, but may not be stock. These are the parts normally sent out when people want to order a basic rebuild kit.
The parts in the top blue section may be ordered as one part number K-8485-3B-STK. The same kit, but with carbon apex seals and correct springs substituted can be ordered as K-8485-3B-RCE. Parts need to be ordered individually if ordering ceramic apex seals.
DESCRIPTION | PART NUMBER | QTY | NOTES |
APEX SEAL – STOCK | N304-11-300A | 6 | Click here for optional Apex Seals & Springs |
APEX SPRING | 1757-11-304 | 6 | |
CORNER SEAL | N225-11-321 | 12 | |
CORNER SEAL SPRING | NF01-11-C24 | 12 | Washer type spring from 93-95 RX-7. Retains strength under high temperatures better than wire type design. |
CORNER SEAL PLUG | N201-11-322 | 12 | |
SIDE SEAL | 8871-23-151 | 12 | Precut |
SIDE SEAL SPRING | 0820-11-317 | 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 | N304-89-100A | 1 | 84-85 set. Will work for earlier cars but intake and exhaust manifold gaskets might be different. Includes O-ring set. |
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 – CARBON | 4801-11-301 | 6 | |
APEX SEAL SPRING – FOR CARBON | ZR03-11-304 | 6 | For use only with Carbon Apex Seal |
APEX SEAL – CERAMIC 1PC 3mm | 0000-01-9105 | 2 | Comes with precut dual apex seal springs. 3 per box |
APEX SEAL – CERAMIC 2PC 3mm | 0000-01-9115 | 2 | Comes with precut dual apex seal springs. 3 per box |
CORNER SEAL SPRING – STOCK 12A | 1202-11-323A | 12 | Wire type. Use only if stock springs are required by class. Normally the washer type, NF01-11-C24, listed above will retain strength better under high temperatures. |
ROTOR BEARINGS – STOCK | 1011-11-111 | 2 | STOCK |
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. |
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MAIN BEARINGS – STOCK | 0820-10-502B | 2 | STOCK |
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 | N304-11-400 | 1 | DISCONTINUED – LOW STOCK |
ROTOR HOUSING FRONT AND REAR | N304-10-100C | 2 | 1984-85 STOCK |
ROTOR HOUSING FRONT | 4801-10-100 | 2 | Peripheral port. NO LONGER AVAILABLE |
Use pdf catalogs online to search for intermediate housings. |