86-95 Rotor Parts

These will not work with a Renesis Rx8 engine.

All of our apex seals are heat treated. The material for these seals has been developed by David Atkins over his extensive racing career in order to exceed stock apex seal life and durability. We have customers running 7 second quarter mile times with these seals. Customers use them in a wide variety of applications including turbo, NOS, superchargers, and naturally aspirated applications.

Detonation will ruin any apex seal, none are immune from this problem. Some apex seals will bend under detonation, and become useless, due to lack of compression, these may break but they will do so inside of the rotor and save your housings. The benefit of these is that they can takes much more abuse before breaking than other seals can before bending.

(12) Mazda 86-95 13B OEM Side seals that we have cryogenically treated.

We prefer the side seals Mazda offers which are longer that require hand fitting so that you can attain a tighter fit between side seal and corner seal to allow maximum compression and no blow by.

Every rotor is different so it is better to get them longer to custom fit each slot, these are cheaper also than the pre-cut versions. You will need to remove approximately 0.05"(1.28mm) from each side seal. Slowly remove the material and try fitting them til you get an ideal fit of 0.002" - 0.006" (0.05mm - 0.15mm) with a maximum limit of 0.0157" (0.4mm).

Do not use with lapped side housings.

Twelve 13B 86-91 Rx7 Side Seal Springs, will also work for 93-95 Rx7s.

These should be replaced with each rotary engine rebuild.

Remember to check the side seals and replace if needed.

Mazda# N326-11-C20

Twelve Stock Mazda OEM 2mm Corner Seals, includes corner seal plugs
Corner seal plugs are available separately if desired.

Remember that the springs should be changed with each engine rebuild. The 93-95 Springs can be used as an upgrade in 79-92 Rx7's. (Any 2mm or 3mm application)

Solid Corner seals by Atkins Rotary is a great upgrade to any engine rebuild.

This was designed by David Atkins and has been patented.

This is an excellent upgrade to any engine. These are desirable under high boost or nitrous applications.

This is a one piece corner seal. Can be used in place of the 2 piece design with plug. Can be used with the wire type corner seal spring or the 93-95 HP wafer type spring. The 93 Style spring is recommended.

Mazda basically copied our design with the Rx8, getting rid of their faulty rubber corner seal plug and opting for a steel one basically making their corner seals solid like these.

Do not use these with lapped side housings.

These are inserted into the 2 piece style Mazda OEM corner seal.

Twelve 2mm Corner Seal Plugs

Don't forget to change the corner seal springs

(12) Stock OEM Mazda 74-92 Corner Seal Springs.

For a higher performance/cheaper option please use the 04-11 Rx8 corner seal springs, or the 93-95 Rx7 corner seal springs.

The only reason you should really be using these is if you have a 6mm apex/corner seal application, or if you hit yourself on the head really hard and can't tell a good design from a bad one.

Otherwise steer clear of this hot mess and go with the new style corner seal springs.

Fits:
93-95 Mazda Rx7
04-11 Rx8s with manual or high power automatic transmissions.

These have a yellow mark on them.

A rotor bearing press tool is needed to remove and install the bearings.

4 Inner & 4 Outer Rotor O-Rings.

Fits all 10A, 12A, 13B rotary engines from 1969-2011.

Factory Oil Ring Inserts can be found here.

Having problems installing your oil control rings with our viton inserts, see this video to show how it is done.

4 Inner & 4 Outer Metal Oil Control Rings

Works with any mazda rotary engine from 1969-2011.

Note: If you are using these to rebuild an Rx8 renesis engine you may also need a set of Oil Scraper Rings, and Oil Scraper Ring Springs.

N3Z1-11-S10A
8871-23-180

4 Inner & 4 Outer Mazda OEM 69-11 Rotary Oil Ring Spring Set.

Fits all rotary engines from 1969-2011 including R100, Cosmo, Rx2, Rx3, Rx4, Repu, Rx7, & Rx8.

Fits:

• 71-92 Rotary Vehicles - All
• 04-11 Rx8 - Low / Standard power automatics
• 90-95 20B Cosmo

A rotor bearing press tool is needed to remove and install the bearings.

Competition Rotor Bearing has approximately .04" deeper oil grooves and provide approximately .0005" more clearance than stock bearings.

Use on any rotary engine from 1974-1991, and automatic/low power Rx8s.

Detailed images show competition and stock bearing so you can see the difference.

(12) Mazda Corner Seal Springs, will fit any rotors from 1974-2011 Rx7 & Rx8, a nice upgrade from the earlier wire style corner seal springs.

Will fit any 2mm or 3mm applications.

N3H1-11-C24B

One set of Apex seal springs is enough for one 13B 2mm engine.

Six short and six long 2mm apex seal springs for all 86-11 Rx7 and Rx8 engines.

Will not work with Rx8 Renesis engines.

See our Cryogenically Treated FAQ.

All of our apex seals are heat treated. The material for these seals has been developed by David Atkins over his extensive racing career in order to exceed stock apex seal life and durability. We have customers running 7 second quarter mile times with these seals. Customers use them in a wide variety of applications including turbo, NOS, superchargers, and naturally aspirated applications.

Detonation will ruin any apex seal, none are immune from this problem. Some apex seals will bend under detonation, and become useless, due to lack of compression, these may break but they will do so inside of the rotor and save your housings. The benefit of these is that they can takes much more abuse before breaking than other seals can before bending.

Factory Mazda Oil O-Ring Insert Kit.

Fits all rotary engines from 1969-2011

Atkins Aftermarket Viton Oil Control O-Ring Inserts are a better, cheaper alternative.

Twelve Factory OEM Mazda Side seals

We prefer the side seals Mazda offers which are longer that require hand fitting so that you can attain a tighter fit between side seal and corner seal to allow maximum compression and no blow by.

Every rotor is different so it is better to get them longer to custom fit each slot, these are cheaper also than the pre-cut versions. You will need to remove approximately 0.05"(1.28mm) from each side seal. Slowly remove the material and try fitting them til you get an ideal fit of 0.002" - 0.006" (0.05mm - 0.15mm) with a maximum limit of 0.0157" (0.4mm).

Do not use with lapped side housings.