View Single Post
Old 03-09-2012, 02:40 PM   #25 (permalink)
Fat Charlie
Rat Racer
Fat Charlie's Avatar
Join Date: May 2011
Location: Route 16
Posts: 4,109

Al the Third, year four - '13 Honda Fit Base
Team Honda
90 day: 42.9 mpg (US)
Thanks: 1,744
Thanked 1,890 Times in 1,225 Posts
Originally Posted by mwebb View Post
there will not be spark at both electrodes , the spark will take the single easiest pathway to ground , which may vary as the gap erodes and conditions inside the combustion chamber change .
Yep. If you really want to have two sparks, use two plugs. Chrysler's Hemis have two plugs per cylinder. If it were really a unicorn then they'd advertise the extra plugs to get some benefit from it. I think that the head design has a lot to do with any gain from it because they don't use it in other engines.

Originally Posted by mwebb View Post
never use... they were never OEM specified for any system and do not perform as well as the correct OEM specified part# for the system in question
That sums it all up nicely. It's always my recommendation with spark plugs.

Originally Posted by sheepdog44 View Post
Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

  Reply With Quote