[Fot] TR4 spark plug and indexing poll for full race spec motor

[Jim Gray]

Fot

I was curious as to what spark plugs everybody runs and favorite gaps.

I'm playing around with index washers now and opinions seem to vary on that
subject.

It's been said that it's best to index the plugs facing the exhaust valve,
between the valves and toward the 

intake valve. Lots of opinions on that subject.

Any comments ?

 

Thanks,

jim g