Spark plugs
Spark plugs Hey guys need some help choosing some plugs for my nitrous. I have a LQ9 418 with 11.3 compression with LS3 heads I will be spraying 100 or maybe a 150 what would be the best plug to go with. Also won't be spraying that often.
Thanx
Thanx
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With your compression, I would start at at least a B8efs and work your way down. Always better to start cold and work hot (worst that happens is you foul plugs)
Starting hot could turn a plug into a glow plug and predetonate the mixture, potentially popping your engine.
Starting hot could turn a plug into a glow plug and predetonate the mixture, potentially popping your engine.
That's a gasket seat style plug which still works and is a number 8 heat range plug but NGK b8efs is a tapered seat style plug which is what an LS head is. So, why not use the correct seat style? Now if you are spraying enough, there is no number 10 heat range in a tapered seat and I can then see using a R5671A-10.