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One of the key characteristics of 7mm spark plug wires is their size. At 7mm in diameter, these wires are designed to provide the optimal balance between electrical conductivity and insulation. This ensures that the high voltage current is delivered to the spark plugs without any loss of power or interference from other electrical components in the engine bay.0.1 to 0.32 μmRa and 0.8 to 2.5 μmRz
and the lead angle to no greater than 0.05°. (There is a risk that the lead marks will impede the sealing performance of the oil seal: see Figure 5.)
Where loads are light, the outer skin layer can be made of silicone. It can be made of Fluroelastomer (orViton) to protect under high temperatures (more than 120 degrees Celcius). The skin can also be made of Poly Acrylate or Polytetra-FluroEthylene.
If this is not possible, you may be able to fit the lower retaining bolt into the upper mounting support, to hold the engine level. Or the gearbox may have to be jacked up and supported.
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