Would a different heat range of spark plugs help FE?

[Chris D.]

I was just curious if changing plugs out to a different heat range would help or hurt FE?

I haven't seen this discussed or couldnt find anything with a search..
thanks.

[Ryland]

From what I understand, the heat range doesn't affect the sparks ability to ignite the fuel much, but more so affects the life of the plug, to cold and it will foul, to hot and the tip will get hot and cause pre-ignition.
you have to get mighty cold to be a super conductor, so I suspect that a slight rise in heat isn't going to prevent a spark from jumping, altho I have read about surface gap (like Bosch platinum +4 plugs) tend to be hotter, because the spark is traveling so close to the ceramic insulator, and absorbs some of the sparks heat, this was out of an SAE automotive engine efficiency book that I read years ago.

[Chris D.]

Those Bosch +4 were garbage in just about any way performance related,
I highly doubt I'd recommend those for FE.

I'm a fan of Denso, NGK and Champion myself..
Those gimmick plugs that cost $25 ea DO perform excellent...
Less weight in your wallet helps gas milage.
(read sarcastic) lol

Next go around, I'm shooting for indexing..

[tasdrouille]

Originally Posted by Chris D.

Those gimmick plugs that cost $25 ea DO perform excellent...
Less weight in your wallet helps gas milage.
(read sarcastic) lol

There is a member here actually testing the pulstar plugs. Can't remember who though.