What Spark plugs will work in my Zenoah or Chung Yang RC-style engine?

[benckie]

For zen and cy engines

plug gap

0.6 to 0.7



As for plugs

NGK CMR7H (most common)
Champion R27C
NGK CR8HVX
NGK CR8HSA
NGK CR7HVX
NGK CR7HSA
NGK CMR8A
NGK CMR7A
NGK CR7HIX Iridium Plug (don't fit the hpi baja 5b)
NGK CR8HIX Iridium Plug (don't fit the hpi baja 5b)

 

[benckie]

How should I break-in my Zenoah or Chung Yang RC-style engine?

NGK CR7HIX Iridium Plug and NGK CR8HIX Iridium Plugs are to tall for the hpi baja 5b and only just fit the fg mt