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  2. Valve job - Wikipedia

    en.wikipedia.org/wiki/Valve_job

    A valve job is the colloquial term for resurfacing the mating surfaces of the poppet valves and their respective valve seats that control the intake and exhaust of the air/fuel mixture in four stroke internal combustion engine, replacing valve oil seals, replacing any deficient valve springs, and otherwise bringing the components of a cylinder head up to manufacturer’s spec. [1] A ...

  3. Quench polish quench - Wikipedia

    en.wikipedia.org/wiki/Quench_polish_quench

    Quench polish quench. Quench polish quench (QPQ) is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is sometimes known by the brand name of Tufftride, Tenifer or Melonite. [1] Three steps are involved: nitrocarburize ("quench"), polish, and post-oxidize ("quench"). [2]

  4. Lapping - Wikipedia

    en.wikipedia.org/wiki/Lapping

    Lapping. Lapping machine. Lapping is a machining process in which two surfaces are rubbed together with an abrasive between them, by hand movement or using a machine. Lapping often follows other subtractive processes with more aggressive material removal as a first step, such as milling and/or grinding. Lapping can take two forms.

  5. Run-flat tire - Wikipedia

    en.wikipedia.org/wiki/Run-flat_tire

    Run-flat tire. A run-flat tire is a pneumatic vehicle tire designed to resist the effects of deflation when punctured, allowing the vehicle to continue to be driven at reduced speeds for limited distances. First developed by tire manufacturer Michelin in the 1930s, run-flat tires were introduced to the public market in the 1980s.

  6. Low rolling resistance tire - Wikipedia

    en.wikipedia.org/wiki/Low_rolling_resistance_tire

    Low rolling resistance tire. Low rolling resistance tires are designed to reduce the energy loss as a tire rolls, decreasing the required rolling effort — and in the case of automotive applications, improving vehicle fuel efficiency as approximately 5–15% of the fuel consumed by a typical gas car may be used to overcome rolling resistance. [1]

  7. Tire uniformity - Wikipedia

    en.wikipedia.org/wiki/Tire_uniformity

    Tire uniformity refers to the dynamic mechanical properties of pneumatic tires as strictly defined by a set of measurement standards and test conditions accepted by global tire and car makers. These standards include the parameters of radial force variation , lateral force variation , conicity, ply steer, radial run-out , lateral run-out , and ...

  8. Formula One tyres - Wikipedia

    en.wikipedia.org/wiki/Formula_One_tyres

    Formula One. The 2023 Pirelli tyres include (from left to right) the three slicks – called the softs, mediums, and hards – intermediates, and full wets. Formula One tyres are specialised racing tyres designed for use on a Formula One car. Tyres play a crucial role in the car's performance, affecting grip, handling, and overall speed.

  9. PJ1 TrackBite - Wikipedia

    en.wikipedia.org/wiki/PJ1_TrackBite

    PJ1 TrackBite. PJ1 TrackBite (formerly known as VHT TrackBite or simply VHT) is a custom formulated synthetic resin, typically black in color, used in drag racing to either increase the traction of a car's tires or as a sealer for newly ground and/or resurfaced race tracks. [1] It stays sticky for weeks, has fire-retardant properties, and is ...

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