Pettit Engines
Over the past 20 years Pettit Racing has built more than a thousand race and street rotary engines. The ability to produce consistent results has earned a worldwide reputation for unsurpassed quality, top performance and outstanding reliability. This reputation has been maintained by having a relentless passion for perfection, proven superior attention to detail and hard earned Racing Championships to back it up.
Top Quality
So what makes Pettit Built Engines the best and how is this maintained for over 20 years and after 1000 engines?
It all starts with a careful inspection of all the selected components that make up every Pettit Built Engine. To ensure our attention to detail doesn’t go wasted, we start every build with only genuine Mazda Parts.
Everything, including brand new parts are carefully inspected, measured and approved for each and every engine we build. Next, all modifications such as porting, machining and blueprinting are completed to exacting specifications. Then all components receive a high temperature detergent bath and high pressure rinse with a 10hp cleaning machine. We then return to square one, for another inspection before moving on.
At the pre-assembly stage, more inspections are performed. To pass the pre-assembly stage a surface finish of 12-18 micron is required on all critical surfaces. To consistently achieve these high standards, Pettit has developed several proprietary methods and tools for machine and hand finishing of these critical surfaces. Next is another inspection during which oil galleys and internal passages are inspected and a final cleaning is performed. Last stop is the engine room and final inspection, then all critical openings are sealed and receive caps & plugs.
From here on every engine is built by Cam Worth himself. That’s right, for over 20 years he has personally hand assembled every engine ever sold by Pettit Racing from street cars to all types of clients and vehicles, they all have in common the trust and confidence of Pettit Racing’s unsurpassed reputation and know-how:
- Numerous Race Teams
- Multiple R&D Projects
- Magazine Project Car Builds
- Boats and Marine Vehicles
- Prototype Diesel Engines
- Single Rotor Engines
- Diasio D962R / D962R Turbo
- X Board Rotary Powered Surfboard
- AXIO Single Rotor Kart Car
Horse Power
Our standard Street Port improves efficiency and flow without major changes in port timing. The benefits of this are better fuel economy with an increase in power delivered throughout the RPM range and boost levels. Our standard 13btt Street Port engines (when properly tuned) maintain a charge temperature under 125 degrees F @ 16‑20 psi with a 1:1 ‑ 1:1.25 backpressure ratio. On a two-rotor engine this is good for 400 hp.
Engine Longevity
Engine life is totally dependent on proper care. To achieve the better longevity access and follow our tips and lessons learned over the years right here in The Guide. However, the basics of keeping any rotary engine happy include; warm it up easy, keep the oil clean, use Protek-R fuel lube and a high octane good quality fuel. Following these simple procedures, many of our engines are still running and performing strong after 10 years.
Monster Ports
Extra large and Monster Ports (common with older naturally aspirated and drag race engines) can compromise reliability. Since the seals, both apex and side pass over larger openings, this allows more seal flex to occur resulting in accelerated seal wear as well as greater possibility for catastrophic failure. All this should be especially evident when most conversations about turbo rotary engines include mention of seal failures.
Build your Engine
Due to a shortage of engine core parts, the best and most cost effective method for obtaining a Pettit Built Engine is to ship us your old engine, once here we dissemble it, inspect it and call you with our findings and pricing. In most cases the old parts tell a story and can help us understand what caused your engine to fail, which can be helpful to avoid engine failure in the future.
OTS Pettit Built Engines
The other method is we ship you a Pettit built OTS engine (off the shelf). These engines come with all new rotor housings, rotors and the latest two piece dual sprung 2mm apex seals from Mazda. due to all the new parts these engines cost $4995 plus the refundable core charge of $1000 when we receive your usable core, total cost before core refund $5995.
Pricing
For a completely accurate quote, please call us with your exact engine building specifications.