Rotor Housings are very, very expensive but are mandatory for any rebuild expected to last as long as the original engine. We can build an engine to your specs. This means that the main components are not destroyed or worn beyond reuse. We have had success with both normally aspirated and turbocharged versions of the 2-Rotor. I will reuse the original rotating assembly counterweight, rotors, e-shaft, and flywheel from the early engine, unless the customer wishes to step up to the later, lighter rotating assemblies from the 86-88 nonturbo, or 89-91 nonturbo at an extra cost.
Less chance of bolt breakage. High boost engine expansion reduced. The most frequent substitutions are apex seals and oil control ring o-rings. We have developed different Rebuild Levels to cater to individual budgets. Studs manufactured from 4140 chrome moly, heat treated, centreless ground and black oxided.
This is why we don't offer them. Rotary Engine Rebuilds are what we do best. Intake porting includes two primary and two secondary ports. All our prices are based off customers supplying a good core with usable rotors, housings and irons. Used housings should be carefully inspected prior to re-using, in any event. The only substitutions we typically recommend are premium ceramic apex seals only for extreme applications or the Heavy Duty Water Seal Kit for all applications , which we tested for 7 years in a variety of engines on the street and track before offering to the public.
Parts used for our engine builds are mostly factory Mazda parts except for the parts most commonly recommended to upgrade from O. We normally do not recommend the use of the stock oil pan gasket because it tends to leak worse than silicone sealer alone, but it is available for those who really want one. Please contact us for pricing. Rotary Heads builds street performance cars to full drag and course race car applications. Turn around time for engine rebuilds and services vary depending on work load and part availability.
The rotating assembly includes both rotors, main pulley, front and rear counterweights, and the eccentric shaft. We provide serivce worldwide, cars can be shipped from any location to us for servicing! However, a rebuild due to catastrophic failure usually requires new core components. Studs manufactured from 4140 chrome moly, heat treated, centreless ground and black oxided. We are committed to building street performance rx8 and rx7s. All external parts will bolt up just as if stock as well, with perhaps a minor modification being necessary here and there due to casting differences. Rick Engman has with rotary engines, these parts have been carefully selected to provide the basis for a top quality build. We have over 20 years of experience, from restoring stock vehicles to building track monsters.
Hopefully the rotary will live on! Qty: Description An affordable engine for those of us on a tight budget. Because of this, I have no core parts for these engines. Main and rotor bearings are also reused whenever possible, because it is my opinion that a moderately worn original bearing is still superior to a new bearing in this application. Though I have the ability to rebuild early 13b and 12a engines, I rarely do so. The power increase from porting varies, depending on the other modifications made to the engine, but averages 20 percent. Intake porting includes two primary and two secondary ports. Click the images to view the specials.
We also build with quality and longevity that will surpass factory Mazda engines. You also have the option of dropping off your car for a swap, but again, to setup an appointment. We rebuild your supplied core engine. Please contact us for pricing. When asked, I usually recommend that 12a owners convert to a 13b, using the guidelines below for an updated hybrid block.
Mazda has said that they are continuing the development of the engine and have plans for the 16X rotary engine. Final assembly of the engine includes setting all clearances within Mazda tolerances to insure long engine life. See our video page to see video's of the 2 3 4 Rotor versions. These prices are for a stock rebuild on a rotary engine block. Your 13B will be completely rebuilt to perform as new. Rotary Engine Rebuild Services Banzai Racing rebuilds all rotary engines to higher than Mazda specifications.
The power increase from porting varies, depending on the other modifications made to the engine, but averages 5 percent. Please contact us at for information regarding other rebuild upgrades not mentioned. You should familiarize yourself with them by reading:. All parts are genuine Mazda factory, except for the substitution of our Heavy Duty Water Seal Kit. The silver is still available, if you wish to have this instead. Your 13B will be completely rebuilt to perform as new. As any top tier rotary engine builder will be able to tell you, the quality of parts will have a direct relation to the reliability and durability of the engine.