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Street Ported RX8 231 Rebuilt Engine

Refurbishe Mazda 231 Street Ported Engine for 6 Speed 2003 - 2008 RX8
Refurbishd Mazda RX8 13B-MSP Engine in Black & Blue
Sales price £1,350.00
Price / kg:


Refurbished Mazda RX8 231 Street Ported Engine

This is our standard low compression engine rebuild with a Street Port using the Racing Beats template. It is design to increase the power by 15% without affecting the drivability of the RX8. The power gain is noticeable and without affecting the fuel mileage massively. At the same time this build price has been kept to a budget to ensure its affordable.

This engine will fit LHD or RHD 2003 – 2008 6 Port 231 Manual 6 Speed Mazda RX8. The refurbished Engine rebuild comes with the following new components:

  • New Apex Seals
  • New Apex Seal Springs
  • New Corner Seal Springs
  • New Mazda Stationary Gear Bearings
  • Water Jacket Seals
  • Viton O-Rings (Rotor O-Rings)
  • Dowel Pin O-Rings
  • Rear Stationary Gear O-Ring
  • Front Cover O-Ring
  • Front Hub Bolt O-Ring
  • Front & Rear Main Seal
  • New Tension Bolt Seals
  • Replacement Thermal Bypass pellet
  • New Mazda Front Cover Gasket

The Street Port

The street port modifies the inlet and exhaust ports on each of the engine irons (Front, Intermediate, and rear). The inlet manifold tubes are also ported to match the front and rear irons. This is a stage 1 form of porting and does demand any ECU map to performed on the RX8

Engine Painting

The engine can be painted or left unpainted. We use a 2K paint solution that is hard waring. Common combinations that we stock is Red & Black, Blue & Black. It is possible to paint the engine any industrial RAL solid colour upon request for a £45.00 fee.

Optional Installation

This engine can be installed at our Hayling Island Workshop for £350.00. This includes engine oil, oil filter and coolant. We also offer a same day engine fitting service for £450.00. The engine would have to be ordered seven days prior to your scheduled appointment.

Engine Surcharge Fee

When purchasing an engine a surchage of £180.00 is payable for not returning your old engine. If the old engine is provided then this surcharge is waved.


This engine comes with 24k mile / 24 month warranty, whatever comes first. For full warranty terms and conditions please look under our faq section.


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Solent Rotary Ltd
Unit 5 Finchwood Farm
Copse Lane
PO11 0QB

Tel: +44 (0)2392 466395

Mob: +44 (0)7597 807759

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About Us

Solent Rotary Ltd Specializes in Mazda RX8 engine rebuilds, porting, servicing and sports modifications. Solent Rotary Ltd is based in Hayling Island a few minutes away from Portsmouth in Hampshire.