Rotary Engine Shop

Rotary Engine Repair Shop | How do you drive?

Mazda Rotary Engine Rebuilds & Performance Specialists in Colorado

OEM-quality restorations, street performance, race engines, and custom rotary builds by an engine builder—not a marketing department.

 

  • Full Mechanical Restorations, New Engine Builds, Rebuilds and Performance upgrades.

Suspension and Brake maintenance / upgrades along with speciality fabrication.

 

If you are ready to restore your rotary engined car properly, we may be a good fit. Cutting corners reduces lifespan, we build quality.

Ask about our other services: Repair, diagnosis, upgrades, set-up and more. Have a budget and solid expectations.

 

  • Built by Experience. Proven on the Street and Track.

Ready to get started? Scroll down and fill out our form (no spam here)

1. Why REspeed

Customers work directly with an experienced rotary engine builder rather than a sales organization.

2. Services

  • Rotary engine rebuilds
  • Diagnostics and troubleshooting
  • Performance upgrades
  • Cooling upgrades for Colorado, real experience
  • Race car build and preparation
  • Sequential transmission integration
  • EFI / ECU support

3. What Makes Us Different

 

A rotary engine builder who still spends his day building engines.

 

You can have it cheap, or you can have it right. We build engines to be driven—not rebuilt twice. Details matter, do it right, do it once.

4. Real Build Articles

Feature technical blogs and build stories that demonstrate expertise rather than marketing copy.

 

Contact REspeed for an engine evaluation or to discuss their project. Fill out one of our forms (found on every page)

Let's get a conversation started

Let’s Build a Performance Engine

Rotary Engine Builds Colorado

Quality Performance starts with your expectations.

 

  • Fill out the form here and get a conversation going.

The best way to connect is through our forms because this gives both parties an accurate record. Details matter. 

Snip20220310_51-1What are the options?

 

Rebuild or Replace?

Every rotary engine that is need of repair is going to need to be disassembled to get a better idea of what it needs to restore performance and reliability. 

Need a compression test to see if your motor is still within specs? We can do that.

For most engines where compression is down and it still runs, it is cost effective to rebuild. Where there has been a major engine failure (as in internal damage) the real answer may be to replace that engine.

Worn engines will have (most of the time) good internal side plates. For almost every RX8 engine we have rebuilt, the rotor housings / seals & springs must be replaced. In today's climate, the number of high end rotary engine shops is limited, be prepared to repair the whole car, not just the engine block.

The reality is that we must get your engine apart, assess / measure to OEM specs before putting together an engine build list with pricing. Getting the details right is our priority. In order to do it right, all components must be assessed, replaced. We put pride in our builds. No sense in adding more cost than is necessary.

Due to build volume limitations, we accept a limited number of engine projects per month. Make sure you fill out a form to start a conversation. Also note, if you are looking for a cheap, quick rebuild, those days are gone as we will give you ballpark pricing, expect it to be over 10k on drop off car, rebuild engine (why, because we end up replacing a lot more than just the engine block).

Popular Blog Posts

If you have a question please fill out one of our forms.

Frequently Asked Questions

How much does a rebuild cost?

A realistic question. The answer is it all depends on what your motor needs. 

Factory new motors start at $6500, please check with us for current pricing. 

REbuild pricing starts at $3500

Don't forget that engine rebuilds require testing / evaluation of all parts inside & outside the engine, including gaskets and ultrasonic cleaning.

We price check parts with our Mazda rotary retail partners like:

Mazdatrix.com

Atkinsrotary.com

Racingbeat.com

Our pricing is very competitive. With our ever-changing product availability, our build pricing and parts availability has been challenging. I've seen prices go up / down in days not weeks/months. We work hard to stay competitive and get projects done on time.

Can I bring you just the motor to rebuild?

Absolutely. We like those types of builds. It saves you money and we don't have to store your car during that time.

We will build it to your specs, pressure test cooling system and replace all internal parts that are not within OEM specs.

Many Mazda Rotary guys love tinkering with their own cars. This approach saves you money and allows you to keep your car at home in your garage. Set up an appointment so we can go over your options. 

Our terms of service

REspeed llc | Description of Services

REspeed llc is a engine building shop focused on Rotary Engines (but not limited to)

Please visit our Terms of Service page

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