Originally Posted by
Stu @ M Developments
IK27 for me. IK31 are fine as long as there are no overly rich sections in the map and it doesn't spend most if it's life cold. They don't like rich mixtures as they are a very cold plug but if allowed to get hot they are fine.
Most problems with iridium plugs come from excessive torquing of the threads and clowns putting copper grease on the threads on installation.
With Hillclimbing I tread a fine line with the warming the engine up and not cooking the ACT's.
I'd say it's probably does spend alot of the weekend in cold start.
So IK27's would alleviate this problem or at least reduce it?
Rich