REspeed Blog

This is where we share our knowledge / experience and to let you see the work we do.

Rotary Engine Shop | Why our Blog matters:

We write blogs because showing vs. telling is the best way to demonstrate our process / results. Details matter. Long live the Rotary Engine. 
MazdaDoug

MazdaDoug

Avid SCCA race car driver, engine builder, Mazda enthusiast.

Recent Posts

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Rotary engine porting | Bigger does not = better - Why it matters

The rotary engine has changed the porting over the years, improving performance and reducing emissions. Intake porting: This is where a lot of gains can be made, on the other side, also a lot of ...
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Rotary Engine REbuild / refresh 12A vintage racecar

Rotary Engine Shop in Colorado | We have customers that still run the 12A engine in their vintage race cars. Why? Because these smaller motors are tough. Do the right maintenance, use the proper ...
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Ultrasonic Clean | Rotary Engine Shop in Colorado

Clean engines are better engines. Using the Ultrasonic cleaner to remove all the carbon / grease from the engine and external components is critical for engine performance / longevity
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Renesis Engine Rebuild | Part 2

Renesis Engine Rebuild Part 2 | Once we have the engined disassembled, next we head over to the Ultrasonic cleaner to remove all the carbon / grease from the engine and external components.
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Renesis Rebuild | Show the process / details Part 1

To kick off the year, we thought we would share the customer experience. What we do, and what we share with you the customer during disassembly, cleaning and the rebuild. When we take the engine ...
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Rx7 / Rx8 Upgrades | Let's talk batteries

Rotary Engine Shop Colorado | Battery Performance is something that gets left alone until something goes wrong.
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Cooling Systems Upgrade | Mazda Rx8’s in Colorado

The Mazda Rotary Engine makes a lot of power when cooling temperatures (oil and water) are in the range of 180-195, anything higher and you lose horsepower & torque. For 90% of all rotary engined ...
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Renesis Engine REbuilds | beyond price

Rebuilding the basic Rx8 engine block is all about the details, what about everything outside the engine internals? This is a discussion we have with every customer, because the details matter ...
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Rx8 rotary engine teardown | Overheated Rotor housings

We have a deep admiration for our rotary engines as they possess a remarkable ability to rev high, produce pleasing sounds, and harmonize perfectly with the well-balanced chassis of the Rx8. Our ...
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GSL-SE proper diagnosis / repair | Mazda Rx7 engine rebuild or ?

Rotary Engine Shop | Filling out one of our forms connects you to our team and starts a conversation about your Rx. We received a form regarding a rare GSL-SE that requires some TLC and an engine ...
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