Gold-painted 13B rotary engine built by Rotary Performance Shop

Services

Engine Builds

Custom rotary engine builds tailored for performance, from street rebuilds to 900hp+ E85 packages.

Quoted per build

Every engine is built in-house by the same person who tunes it. We start with your goal — a reliable street rebuild, a 500hp club car or a 900hp+ E85 build — and spec the rotating assembly, porting, seals and clearances to match.

Builds are broken in and verified on our dyno before handover, and every build ships with its dyno sheet.

What's included

  • Teardown, inspection and measurement of your core
  • Housings, irons and rotors checked and machined or replaced
  • New seals, springs and bearings
  • Assembly, clearancing and compression test
  • Break-in and dyno verification
  • Dyno sheet and build notes

Get a quote

Quoted per build

Tell us about the car and what you want. We reply within 2 business days with a written quote and lead time.

Get a quote

Common questions

Street rebuilds through 900hp+ race engines. Most of our customer cars land in the 500 and 700hp clubs on E85. Tell us the goal and how the car is used and we will spec the build to match.

All three. Flex-fuel tunes read the ethanol content sensor and blend between the pump and E85 maps automatically, so you can fill up with whatever is available.

Engine-only builds can be shipped in on a pallet. Tuning, two-step setup and installs need the car here. The quote form asks which you prefer.

Yes. Warranty terms depend on the build tier and how the car is used; they are spelled out in your quote and build sheet. Tuning by another shop voids the build warranty.