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Supertech Complete Valve Sets for 1994-2005 Mazda Miata 1.8L

Miata Engine Valve Kit

23993177 - STMAEIVN
Price is for an complete valve set of 8 intake and 8 exhaust valves. These kits are configured to our specs using Supertech valves. Please study the kits and the valve specs within the information below and make your selection using the dropdown selection tool on the right. Remember to consult your engine builder on which valves you need and be certain they are aware that Supertech Valves are a custom fitment with .6mm longer stems that allow "grind to fit" allowances on 99-05 solid lifter heads (hydraulic lifters should have a .6mm tolerance for the additional length):
Pricing: $350.00

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Description

Listed below are the options for our Supertech Complete Valve Sets. Please continue reading below the kit options for the specs on the individual valves

Standard Kit (Good):
Our "OEM replacement" kit has the same valve diameters and flow characteristics as the OEM valves and includes:

  • Quantity 8 of MAIVN-1208 standard-flo Black Nitrided Intake Valves
  • Quantity 8 of MAEVN-1204 Black Nitrided Exhaust Valves

    Standard Hi-Flo Kit (Better):
    Our Standard Hi-Flo kit is one step up from the standard kit and uses OEM valve diameters, however the intake valves have a specially designed "hi-flo" valve stem to increase airflow. It uses the same exhaust valves as the Standard kit. The kit includes:

  • Quantity 8 of MAIVN-1204 (hi flo) Black Nitrided Intake Valves
  • Quantity 8 of MAEVN-1204 Black Nitrided Exhaust Valves

    Oversized High Flow Kit (Best):
    Our Oversized High-Flow Kit uses 1mm oversized valves which will provide a higher volume of air to be pushed through the cylinder head, in turn providing or supporting increased power levels. Boosted engines would benefit the most from this, however increasing the cylinder heads volume is never a bad thing for a naturally aspirated engine (especially the Miata's, which has never been a head known for good flow). Please be aware that an oversize valve will require appropriate machining to the head to allow for a larger than standard valve! This kit includes:

  • Quantity 8 of MAIVN-1206 (hi flo) 34mm Black Nitrided Intake Valves
  • Quantity 8 of MAEVN-1206 29mm Black Nitrided Exhaust Valves

    High-Boost/High-Temp Oversized Kit (Turbo/High HP):
    Our high-boost/high-temp kit is designed for high-boost turbocharged engines which would incur a higher than normal heat load. This kit uses inconel exhaust valves, which have a higher heat tolerance than the standard stainless steel valves in the other kits. For intake valves, it uses the same oversized high-flow valves as our Oversized High-Flow Kit. Please be aware that an oversize valve will require appropriate machining to the head to allow for a larger than standard valve! Kit includes:

  • Quantity 8 of MAIVN-1206 (hi flo) 34mm Black Nitrided Intake Valves
  • Quantity 8 of MAEVI-1206 29mm Inconel Exhaust Valves

    Valve Information and Specs:

    MAIVN-1208 (std flo) Black Nitrided Intake Valve

  • HEAD DIAM: 33.00mm (oem)
  • STEM DIAM: 5.97mm
  • LENGTH: 102.00mm (OEM)
  • MATERIAL: Black Nitrided
  • VALVE TYPE: Intake

    MAEVN-1204 Black Nitrided Exhaust Valve

  • HEAD DIAM: 28.00mm (oem)
  • STEM DIAM: 5.94mm
  • LENGTH: 102.60mm (+.6)
  • MATERIAL: Black Nitrided
  • VALVE TYPE: Exhaust

    MAIVN-1204 (hi flo) Black Nitrided Intake Valve

  • HEAD DIAM: 33.00mm (oem)
  • STEM DIAM: 5.97mm
  • LENGTH: 102.6mm (+0.6)
  • MATERIAL: Black Nitrided
  • VALVE TYPE: Intake

    MAIVN-1206 (hi flo) Black Nitrided Intake Valve

  • HEAD DIAM: 34.00mm (+1)
  • STEM DIAM: 5.97mm
  • LENGTH: 102.6mm (+0.6)
  • MATERIAL: Black Nitrided
  • VALVE TYPE: Intake

    MAEVN-1206 Black Nitrided Exhaust Valve

  • HEAD DIAM: 29.00mm (+1)
  • STEM DIAM: 5.94mm
  • LENGTH: 102.60mm (+0.6)
  • MATERIAL: Black Nitrided
  • VALVE TYPE: Exhaust

    MAEVI-1206 Inconel Exhaust Valve

  • HEAD DIAM: 29.00mm(+1)
  • STEM DIAM: 5.94mm
  • LENGTH: 102.60nn (+0.6)
  • MATERIAL: Inconel
  • VALVE TYPE: Exhaust

  • Details

    Shipping Information

    • Item Requires Shipping
    • 3.0 lbs.
    • W6.0000” x H3.0000” x L8.0000”
    • Free U.S. Over $150

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