Jonathan_Ferguson
★ is in the wrong locale
- Joined
- Jul 2, 2003
- Threads
- 132
- Messages
- 950
- Location
- Glen Waverley, Victoria, Australia
- Website
- jonathan-ferguson.au
Let me preface this post, the only thing I've ever owned with a sparkplug is my Chinko.
What I would like to know is if a resistor sparkplug is beneficial to a capacitor discharge ignition, even if there is not an issue with radio frequency interference?
Are there any downsides to an Iridium electrode sparkplug compared to a normal sparkplug made of Nickel?
The original chink sparkplug is an A7TC and I've crossreferenced it to many sparkplugs, so here is my rationalised list:
Nippon Denso U22FS-U or NGK C7HSA (Standard Sparkplug, Nickel with Nickel Electrode)
Nippon Denso U22FSR-U or NGK CR7HSA (Standard Sparkplug with Resistor, Nickel with Nickel Electrode)
Nippon Denso IUF22 or NGK CR7HIX (Iridium Sparkplug with Resistor, Nickel with Iridium Electrode)
The NGK C7HSA and the NGK CR7HSA are available from Super Cheap Auto and are both $4.50
According to NGK, click on 'Spark Plug Installation' to expand, the torque for a M10x1.0 thread plug in an aluminium head is 7.2 - 8.7 ft/lbs. Does this seem right for a horizontal Honda?
What I would like to know is if a resistor sparkplug is beneficial to a capacitor discharge ignition, even if there is not an issue with radio frequency interference?
Are there any downsides to an Iridium electrode sparkplug compared to a normal sparkplug made of Nickel?
The original chink sparkplug is an A7TC and I've crossreferenced it to many sparkplugs, so here is my rationalised list:
Nippon Denso U22FS-U or NGK C7HSA (Standard Sparkplug, Nickel with Nickel Electrode)
Nippon Denso U22FSR-U or NGK CR7HSA (Standard Sparkplug with Resistor, Nickel with Nickel Electrode)
Nippon Denso IUF22 or NGK CR7HIX (Iridium Sparkplug with Resistor, Nickel with Iridium Electrode)
The NGK C7HSA and the NGK CR7HSA are available from Super Cheap Auto and are both $4.50
According to NGK, click on 'Spark Plug Installation' to expand, the torque for a M10x1.0 thread plug in an aluminium head is 7.2 - 8.7 ft/lbs. Does this seem right for a horizontal Honda?