Astina spark plugs

[project.r.racing]

Hi all,

What are they spark plugs for a BJ 1.6/ZM and 1.8/FP engines?

I use NGK brand BKR6E-11s for my 1.8/BP engine. Are they the same plugs used?

Ryan

[marcs_sp20]

BJ 1.8L FP: BKR5E-11, plug gap 1.1mm
BJ 1.6L ZM: ZFR5F-11, plug gap 1.1

As found on there website: http://www.ngkspark.com.au/

[Orion]

Originally Posted by marcs_sp20

BJ 1.8L FP: BKR5E-11, plug gap 1.1mm
BJ 1.6L ZM: ZFR5F-11, plug gap 1.1

As found on there website: http://www.ngkspark.com.au/

A fair few of the US boys run the long reach (ZFR series) plugs in their MSP's and most of them will go for the "colder" plugs (e.g. ZFR6F-11 and ZFR7F-11).

[project.r.racing]

"colder"? whats that mean? and the reference to a higher number?

[Orion]

Originally Posted by project.r.racing

"colder"? whats that mean? and the reference to a higher number?

"Colder" spark plugs get rid of heat between combustion cycles and will generally help prevent detonation. This is one of the better explanations about "colder" spark plugs:
http://auto.howstuffworks.com/ignition-system2.htm

The higher the number, the "colder" the spark plug is - i.e. the better it will dissipate heat.

[chicaboo]

NB: NGK and Bosch numbers work opposite to each other as far as hot and cold go. And incidentally, I prefer NGK.