Scott Hersha
Well Known Member
Question:
I need a spark plug with a shorter height from the cylinder to the top of the plug where the harness attaches. My RV4 doesn?t have a whole lot of room (O-360-A1A). I just replaced all the baffle seals, as well as installing a new ignition harness, and there is very little clearance from the top of the harness where it attaches to the plug, and the cowling in the cheeked cowl. I?ve heard that Tempest plugs are a little shorter, but have been unable to get any external dimension details from either Champion or Tempest. I am currently running Champion REM40E?s. They were new less than a year ago by the previous owner, and in checking the internal resistance, it ranges from 1300 to 2700 ohms. I?ve heard that Tempest UREM37BY?s are not as tall. I?m not all that concerned about the slightly cooler plug (higher CHT) of the -37BY?s. I?m not unhappy with the performance of the Champion -40E?s, I?m just looking for more headroom. I haven?t been able to find a reference for external spark plug dimensions. If anyone knows the external height dimension, from cylinder to spark plug harness connect, please let me know.
Thanks,
If I have to buy new plugs, I?ll probably pick Tempest.
I need a spark plug with a shorter height from the cylinder to the top of the plug where the harness attaches. My RV4 doesn?t have a whole lot of room (O-360-A1A). I just replaced all the baffle seals, as well as installing a new ignition harness, and there is very little clearance from the top of the harness where it attaches to the plug, and the cowling in the cheeked cowl. I?ve heard that Tempest plugs are a little shorter, but have been unable to get any external dimension details from either Champion or Tempest. I am currently running Champion REM40E?s. They were new less than a year ago by the previous owner, and in checking the internal resistance, it ranges from 1300 to 2700 ohms. I?ve heard that Tempest UREM37BY?s are not as tall. I?m not all that concerned about the slightly cooler plug (higher CHT) of the -37BY?s. I?m not unhappy with the performance of the Champion -40E?s, I?m just looking for more headroom. I haven?t been able to find a reference for external spark plug dimensions. If anyone knows the external height dimension, from cylinder to spark plug harness connect, please let me know.
Thanks,
If I have to buy new plugs, I?ll probably pick Tempest.