What spark plug to use with nitrous?

[Anonymous]

I am running a naturally aspirated 300 on alcohol and shooting a 150 hp shot. I am looking for recommendations for a spark plug to use. Currently I am using an Autolite AR32 but would like something colder. I am finding there is not a whole lot of selection in 18mm plugs. Would appreciate any help.

 

[nitrousnick]

the autolite ar-32 is the same heat range as the motorcraft bf-12,the plugs are very cold.I have bf-22 that I am using with 11to1 and 100 shot of nitrous that are working good for me.I dont think you are going to find anything much colder than that,maybe there are some nascar racing plugs that might work ,I think they are surface gap.hope this helps

 

[Anonymous]

If that is as cold of plug that is made what timing do you recommend? I am running 20 degrees at full advance and seem to have trouble at idle at any below that.

 

[nitrousnick]

I'm run'n 110 race gas with 30* total timing,I dont know much about alky,maybe your jetting is too lean?