Street Porting is the reshaping and/or enlargement of the stock intake ports within the boundaries of the corner and oil seal tracks to increase the amount of air that is drawn into the engine over a particular RPM range.

As increasing the airflow in one area of the RPM range will harm airflow in another band, care must be taken to under the performance goals prior to porting. If your engine is already ported, did your engine builder ask you what YOU wanted from the engine BEFORE porting or are they just using predefined ‘templates’ from the likes of Racing Beat and others?


Mazda RX-8

RX-8 Street Porting

  • Without supporting modifications - 5bhp increase approx.
  • With other modifications such as intake, exhaust and ECU Mapping - 10-15bhp approx.
  • All prices subject to vat.

Standard Streetport £300

Large Streetport £385

Mazda RX-8 R3 Studio Image
Mazda RX-7 FD Original in Yellow

Mazda RX-7

RX-7 Street Porting

  • Without supporting modifications - 15bhp increase approx.
  • With other modifications such as intake, exhaust and ECU Mapping - 30-55bhp approx.
  • Ideal for Stock Twin or Single Turbo
  • All prices subject to vat.

Standard Streetport £325

Large Streetport £410


No Hidden Extra Guarantee

Our NO HIDDEN EXTRA GUARANTEE ensures you only pay for your chosen package. If, once your engine is stripped we find you need internal parts including Rotors, Rotor Housings, Engine Plates or the e-Shaft, we will replace these at no extra cost!

**FREE Recovery

At RotaryMotion, we offer a FREE vehicle collection/recovery service within a 100 mile radius when booking your vehicle in for an engine rebuild.

Please note: We cannot be held liable or responsible for your vehicle prior to collection. This includes vehicle taxation, parking charges and/or subsequent fines.


About us

Customer Reviews

So glad I decided to bring my RX7 fd3s to Rotary Motion!! Quick rebuild turn around with constant updates on progress, professional job done and a really nice genuine bunch of guys. Would recommend them to anyone and couldn’t have asked for a better service. Thanks again for all the hard work the guys put in and looking forward to coming down again for more work!

Tom B.

Having chose RotaryMotion for the development of my RX8 NA race engines I’ve been astounded by the support, technical knowledge and abilities of the team. Having used lots of engine ‘builders’ in the past I wouldn’t trust my rotary with anyone else!

Antony W.

Very nice people to deal with, quick turn around, expert advice, excellent prices, my RX8 is running 100% better than before! I had the silver package engine rebuild with a new clutch. I’m really pleased with the work from Rotary Motion and will deffo use again and recommend to anybody who owns an RX! Thanks for everything!

Jack M.

Since getting into Rotary Chris has always been my go to guy. When I had the RX8 he was who made sure I knew how to look after the car, now on my second rotary an FC convertible. Correctly diagnosed a fault with the car that another garage had missed. Chris is a amazingly knowledgeable guy who works magic at what he does.

Aaron J

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