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Freelance Motorsports SureSealsTM – Mazda 1986+ RX7 RX8 Coolant Water Seals 13B S4 S5 S6 N326-10-B71A

Gone are the days of fragile/brittle OEM coolants seals, spliced cord-stock that splits, McMaster round o-rings that crack irons, or encapsulated o-rings that rupture and fail. We’re proud to announce the release of our manufactured coolant seals after 6+ years of hard work, for all 1986+ Mazda rotary engine applications in a universal seal kit.

We provide peace of mind by providing the only rotary engine component in the world with a 5-year/Unlimited mileage warranty. We simply wanted to make the best seals with installation ease, best fitment (no overnight bending/forming), the best materials, and the best design. All attributes together make for a 100% compatible OEM replacement part with no compromises.

Each SureSealsTM package includes 4x inner seals, 4x outer seals, 18x Stainless-Steel tension bolt washers, 18x Viton tension bolt o-rings and installation guidelines paper.

Please see below for product specification sheets and installation examples.

Seal kit FINAL DRAFT_Page_1

Seal kit FINAL DRAFT_Page_2

Water coolant seal in action 6

***PLEASE CONTACT US FOR SHIPPING CHARGES ON INTERNATIONAL ORDERS***


Freelance Motorsports SureSealsTM




Price: $0.00

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One-Piece Hardened Tubular 13b Dowel Pins

***Effective March 16th, 2015 all tubular pins will now come with a 7mm internal diameter hole to match front main bearing oil galley inlet*** If you would like a custom inner diameter set made please look at our other items for our 9.5mm diameter hole to accommodate oil modifications made to irons.

Lighter than the solid dowel pins we sell, these one-piece tubular dowel pins allow you to have a stronger engine and still use the factory oil circulation through the center of the pins. The 13b engine from Mazda uses 4 dowel pins that are very brittle and provide more “slop” or “flex” in the engine.

These tubular pins are precision ground for tighter diameter and straightness tolerance. Each end is beveled for installation aid. After the hardening process the pins are finished to a 10 rms micron finished OD. Being one pin rather than two in the engine, rigidity is increased.

These bars retain a softer steel core but offer the tough exterior with hardening layer; a .1mm deep hardened exterior provides a smooth, durable, long-term finish. Furthermore, the exterior is so hard that they cannot be cut with a tempered/hardened band-saw blade! These are cut for the factory irons and rotor housings, if you have lapped irons please contact us; the length of these units are crucial!

Please call our office at (845) 332-8652 or message us for further questions.

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Price: $200.00

Shipping: $10.00

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One-Piece Solid Hardened 13b Dowel Pins

The 13b engine from Mazda uses 4 dowel pins that are very brittle and provide more “slop” or “flex” in the engine.

These pins are precision ground for tighter diameter and straightness tolerance. Each end is beveled for installation aid. After the hardening process the pins are finished to a 10 rms micron finished OD. Being one pin rather than two in the engine, rigidity is increased.

These bars retain a softer steel core but offer the tough exterior with hardening layer; a .1mm deep hardened exterior provides a smooth, durable, long-term finish. Furthermore, the exterior is so hard that they cannot be cut with a tempered/hardened band-saw blade! These are cut for the factory irons and rotor housings, if you have lapped irons please contact us; the length of these units are crucial!

Please call our office at (845) 332-8652 or message us for further questions.

solid-pin





Price: $125.00

Shipping: $10.00

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Tubular Dowel Pin

***Effective March 16th, 2015 all tubular pins will now come with a 7mm internal diameter hole to match front main bearing oil galley inlet*** If you would like a custom inner diameter set made please look at our other items for our 9.5mm diameter hole to accommodate oil modifications made to irons.

Lighter than the solid dowel pins we sell, these tubular dowel pins allow you to have a stronger engine and still use the factory oil circulation through the center of the pins. These tubular pins are precision ground for tighter diameter and straightness tolerance. Each end is beveled for installation aid. After the hardening process the pins are finished to a 10 rms micron finished OD.

These bars retain a softer steel core but offer the tough exterior with hardening layer; a .1mm deep hardened exterior provides a smooth, durable, long-term finish. Furthermore, the exterior is so hard that they cannot be cut with a tempered/hardened band-saw blade! These are cut for the factory irons and rotor housings, if you have lapped irons please contact us; the length of these units are crucial!

1) If you’re building a single rotary engine you need to add 2 items to the cart.
2) If you’re building a 13b engine you need to add 4 items to the cart.
3) If you’re building a 20b engine you need to add 6 items to the cart.

Please call our office at (845) 332-8652 or message us for further questions.

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Price: $63.00

Shipping: $10.00

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