what spark plugs are you guys using? - Honda Prelude Forum

ChrisRicketts · 06-11-2006, 02:41 PM

when i put the turbo on my car a couple of years ago i went to the NGK BCPR8ES (stock#3330), and then once the motor was built and was making more power i moved to the NGK R5672A-8 (stock #7173). well, the motor has been rebuilt, and i've started the car on my last tune and put a couple miles on the engine. it still needs to be tuned, but the plugs are fouling out very quickly. the car becomes hard to start, or even unable to start. should i move back to a warmer plug for just driving around the house putting a couple miles on the car? I was also wondering if a 9-series plug would be necessary for race gas and power levels around 600whp. thanks guys........

Qveon · 06-11-2006, 11:32 PM

IIRC i am running the R-8s too (2 step colder coppers).

JaXx4k · 06-12-2006, 07:59 AM

i was using the 7 range (1 step colder coopers).

ChrisRicketts · 06-12-2006, 08:48 AM

i'm kinda looking for exact plug numbers, so i know what really works good. because some of the plugs have resistors, some have projected tips, some have this that or the other, and i'm not sure what i need or don't need.