Champion EON5 spark plugs?

[R666 TUS]

Could not get the Chim to start Today just wouldn't fire up.
Took a plug out and it was pretty well swimming in fuel so went
to Halfrauds to get a new set but they had no NKG B7ECS plugs but
they did have Champion EON5 plugs which according to the pack are
for the Chim and Griff. When I compared them to one of the NGK plugs
that came out, the new ones are about 5mm longer from base of nut to tip.
Obviously I dont want to fit them if they are going to hit a piston?
Anyone got any experience with this make of plug.Also if anyone has any
idea why a car that has been running fine would suddenly not want to fire
up in the driveway I would really like to know.
Thanks in advance, Col

[spend]

Go look in the Griff forum.......

Dave

[R666 TUS]

That's quite uncanny that is. Oh well NGK's Tomorrow then.
Thanks, Col

[jsr]

I have used the Eon plugs before. I was a bit concerned about the length too, but they dont hit the piston and they work fine. No noticable difference in performance to the NGK plugs though.

[R666 TUS]

Changed the plugs Today and finally got the car running
but it is still not too keen to start up. Also when driving
if I put my foot down it starts to misfire and breakdown quite
badly. Not sure what to try next, coil maybe ?

Col