Intake manifold 101 OCTANE Minarelli vertical cylinder

101 octane intake manifold for Minarelli engines with a vertical cylinder. As a result of thermal loading, tears can occur in the intake manifold and it can become porous. This means it’s time to replace it. Tears often cause blow-through, which leans out the engine mixture. The result is higher combustion temperatures, noisy running and a loss of performance.