Fine wire plugs - pro & con?

Originally Posted by Paul kgyy

I'm possibly having to replace a set of plugs; what are the pros/cons
of using fine wire types? I know they are more expensive, but what do
you get in return for the cost?

i've had the same fine wire plugs on my TwinCo's IO320's for over 1300 hours with no visible electrode erosion. they also seem to have a wider heat range than regular plugs, an important feature for turbonormalised engines which tend to run hotter than normal in summer.

OTOH, they don't seem to do as well as traditional plugs if your piston rings leak or burn a lot of oil, since they'll foul more easily.

overall, if your engine is in good condition, they seem to be a "better deal" than massive electrode plugs since they seem to have a lower cost per hour.

francois

clipclip wrote:

Paul kgyy Wrote:

I'm possibly having to replace a set of plugs; what are the pros/cons
of using fine wire types? I know they are more expensive, but what do
you get in return for the cost?


i've had the same fine wire plugs on my TwinCo's IO320's for over 1300
hours with no visible electrode erosion. they also seem to have a wider
heat range than regular plugs, an important feature for turbonormalised
engines which tend to run hotter than normal in summer.

OTOH, they don't seem to do as well as traditional plugs if your piston
rings leak or burn a lot of oil, since they'll foul more easily.

overall, if your engine is in good condition, they seem to be a "better
deal" than massive electrode plugs since they seem to have a lower cost
per hour.

francois


Good response. Fine wires are a good investment in a good engine. On the
other hand, they are a wates of money (and in fact foul more easily) in
some engines, like the old Continental E series.

Rip