M&M Racing

M&M Racing Road & Performance Rotary Engine Building/Tuning & Mechanical

All aspects of rotary engine building
From street to strip we can provide everything with our very well established contacts both in NZ and Australia.

-New & used second hand parts
-Servicing
-Engine conversions
-Diff/Brake Conversions
-Exhausts
-Accesories
-Dyno Tuning (Link,Microtech,Haltech, Apexi Power FC
-Engine Building
-Engine machining
-Engine porting
-Compression check with our OEM mazda

rotary compression tester
-Rotary engine rebuild kits
-Sump plates & baffle plates
-OMP block off plates
-Lightweight & Custom Flywheels
-Emission block off plates
-Steel scatter sheilds (Push & Pull Type)
-Dry sump systems
-Motorsport engineering distributors
-Turbosmart distributors
-Fuel injector cleaning and testing
-ECU Sales/Installation & Accesories
-Data Loggers
-Motul Oils
-Billet Boss products
-Garrett Turbos


Engine Machining:

- Peripheral port machining
- Side Plate Skimming
- Side Plate Nitriding
- CNC Bridgeporting
- CNC Exhaust Porting
- Rotor Lightening
- Rotor Side Clearancing
- Rotor Tip Clearancing
- Rotor Face Clearancing
- Slotting Apex Seal Slots To 3mm
- Slotting RX8 apex grooves down (2 or 3mm)
- CNC combustion chambers (86-88)
- Stationary gear, Rotor bearing & Oil gallery modifications
- Cross Drilling Cranks
- Dowelling
- Rotating Assembly Balancing
- Crank grind & Linish
- Machining 13b housings to 12a size
- Machining 13b stat gears to 12a
- Custom Billet Cranks 12A,13B,20B, 4 rotor (for factory replacement or custom short crank 3 or 4 rotor engines)

The old girl does it again, 1 st round of Roll Racing NZ didn’t disappoint with an amazing turnout of cars at Meremere D...
27/04/2026

The old girl does it again, 1 st round of Roll Racing NZ didn’t disappoint with an amazing turnout of cars at Meremere Dragway and lots of very very fast and tough street cars which was awesome to see.

Took out 2WD Turbo class in our beloved family heirloom wagon didn’t miss a beat all day 😎

Check out Racecars Universe YouTube channel link below for some great footage of the event.

https://www.youtube.com/channel/UCJBLFzHqvlPAIpkS7xU75tQ

11/11/2025

Josh’s Series 1 RX7 on the dyno today.

All self built by him running a nice little purrer street port FC engine with a 62mm Borgwarner S300sxe turbo, 3” exhaust, ign-1 coils.

Controlled by a Link G4+ Atom ECU on BP95 fuel made a solid 353hp on 13psi 😎

04/11/2025

Cool FC RX7 on the dyno today.

13B secondary Bridgeport with a Borgwarner turbo, 3.5” exhaust, turbosmart goodies & smart coils all controlled via a Link G4X Monsoon ECU.

Running on Mobil 98 fuel made a stout 370hp on 12psi 😎

Should keep the owner happy for now til he wants more boost and power in the future 😊

22/09/2025

Glenn’s FD on the dyno today

We’ve just installed a new Garrett G35-1050 Turbo and new custom exhaust manifold with a new wastegate & plumb back setup, the old Borgwarner unit it had on there was showing signs of giving up so put it came before causing damage.

Made the same power with less boost as before which is good but intercooler and small exhaust is now a restriction.

Overall pretty good made a solid 370hp just shy of 15psi on Mobil 98 😎 controlled via a Microtech EFi LT10c ECU.

Unknown build or specs on the engine but she just keeps on going 👌

10/09/2025

Marks EX Lancer back on the dyno after a new custom PWR cooling package to take care of cooling duties and a new Garrett G35-1050 Turbo made a solid 445hp on 16psi on Mobil 98 fuel 😎

23/05/2025

Daniel’s FD on the dyno today

Good to finally see it making some power on its own accord.

Stock port Mazda engine unknown history with a Garrett G40 turbo controlled via a Link G4X ECU

Made a stout 367hp on 15psi boost on Mobil 98 fuel 😎

Daniel’s FD almost ready for dyno Simple single turbo conversion we’ve just finished off with a Garrett G40 turbo, Turbo...
21/05/2025

Daniel’s FD almost ready for dyno

Simple single turbo conversion we’ve just finished off with a Garrett G40 turbo, Turbosmart goodies throughout, custom V mount intercooler and Koyorad radiator setup with spal fans, custom AST tank, Link G4X plug n play ECU, Walbro intank fuel pump and Bosch injectors topped off with a custom stainless exhaust system with a Custom Pro M**f rear muffler 😎

Still running factory block with unknown history so will only have about 10psi of boost for now until a new engine is on the cards.

20/05/2025

Ethan’s FC on the dyno, came in for a dyno a wee while back but we found quite a few things that needed some urgent issues particularly overheating issues as the car had sat for 10 years.

Radiator out and flushed amongst a host of other little niggly bits here and there, but all up and running now with a safe tune for Ethan to enjoy and a little to do list for him to sort out a few more tidy up bits when he’s back in NZ.

Zero history on engine but basically a standard FC engine and turbo combination on Mobil 98 fuel controlled via an old Microtech EFi LT10s ECU made a healthy 250hp on 9psi 😎

12/05/2025

Min’s RX7 on the dyno today.

We just replaced the gearbox on the car and noticed a lot of heat and some weird dis colouration on the exhaust system and back of turbo.

So on the dyno it goes for a full retune and is now running a lot smoother and most important all temps down including both air and water temps which were in high 90s for water and high 60s for air temp 🔥

Full wipe of ECU and a whole restart of everything now it’s sitting at low 20 degree intake temps and comfortably sitting at 82 degrees water temp and you can now open the bonnet without burning yourself 😁

Extend port engine unknown mods to it with a borgwarner S300sxe 61mm turbo on BP98 fuel made a solid 330hp on 10psi controlled via a Link G4X plug n play ECU 😎

09/04/2025

Sams 323 back on the dyno for more power.

We tuned this before Rotary Re-union just to get him thru the weekend on low boost and made a respectable 380hp on 12psi and surprised a few people to say the least 😁

Now fitted with a High/Low boost switch she’s singing a sweet song making a stout 513hp just shy of 20psi on BP98 💪🏼

13B Semi-PP engine with a Borgwarner SXE 66mm turbo, a host of turbosmart goodies, our PWR cooling package controlled via a Haltech Elite 2500 ECU 😎

Thanks Sam for trusting us with your car 😊

#323

Address

12H Dalgety Drive, Wiri
Auckland
2104

Telephone

+64212393271

Website

Alerts

Be the first to know and let us send you an email when M&M Racing posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to M&M Racing:

Shortcuts

Share

Category