AND RACE CAR PREPARATION
| Office: | 0870 903 6666 |
| Workshop: | 0870 903 6677 |
| Fax: | 0870 903 6688 |
Engine rebuilds for Rotary Engines
Rotary Engines
AtomicRex in conjunction with CLR motorsport are proud to build performance rotary engines to customer specification for power, budget and intended application. CLR Motorsport are notable for providing engines to Mazda's ALMS factory entry as well as building the 2009 Daytona 24hr class winning engine. Exact specifications will vary but can incorporate the following modifications for performance and reliability
Porting
We offer a range of porting options for both intake and exhaust ports to maximise engine power and driveability across the rev range without compromising throttle response .
Rotors
There are a range of specialist modifications to improve engine response and increase reliable rev limits:
Lightening and balancing the rotors reduces vibration and rotational inertia. This allows the engine to rev quicker and higher whilst remaining reliable. The standard static factory tolerances are 50 grams difference between the two rotors, however a 25 gram difference is more acceptable and achievable by mixing and matching rotors. By statically balancing the rotors we can achieve tolerances within 1 gram.
Dynamic intolerances are caused by the rotor being out of balance under rotation similar to an out of balance wheel and tyre. The standard dynamic factory tolerance is 10 grams, once again we are able to achieve tolerances within 1 gram. Unlike having your wheel and tyre balanced by adding weight to key areas, the balancing process of the rotor removes weight to achieve a near perfect rotation.
Clearancing the rotor is necessary when looking for high rpm applications to avoid contact between the rotor and side housings. This occurs due to heat induced expansion of the rotors.
Oil Modifications
AtomicRex can offer a series of oil modifications to the housings, e-shaft and pump to improve flow and increase cooling.
Water Modifications
These are probably one of the most import modifications that can be performed to the engine. There are a number of methods to achieve increased cooling as the power climbs.
- Radiator, this is a very simple modification to increase the flow of the engine coolant
- Upgraded Pump, to increase the volumetric flow, then we recommend an electric water pump. This has further advantages as it permits the pump to be left running in the paddock allowing the engine to cool down at a controlled rate
- Rotor Housing Cooling modifications, for high levels of boost and power this modification increases the surface area and reduces thermal loads. We cut a series of fins into known hotspot areas within the rotor housings, this in turn results in reducing water seal failures and extends the life of the apex seals
All work is undertaken in a clean and dedicated area with specialist tools and stands.