New Plugs for SBC

[Rusti Evo]

The factory has recently supplied me with NGK BCPR5ES-11 (AS recommended) They look a bit hotter than previous.

These appear to have fixed my hot starting problem at trackdays.

[eliot]

5 is almost std I believe. Colder 6,7 & 8's for high compression / forced induction setups. I'm running 8's because I couldn't find a suitable 7 for my SBC with turbo's.

[k wright]

what part of the part number designates the heat range?

anyone have a link to a heat range chart?

thanks,

ken

[Steve_D]

NGK plug codes

steve

[Wilder]

The numeric denote the temp code - eg BKR5E is a mid range plug.