spark plugs
08-05-2014, 11:10 AM
#4
At 13.6 compression thats pretty hot. At that compression you should be using a 8 heat range. Then you could probably put some timing in it. We are using the 8 heat range on all motor engine as per our engine builder and NGK as well. We are at 34 degrees, and the motor loves it. We are at 13.5:1 Can definitely see and hear the difference if you change it 1 degree either way.
08-05-2014, 11:22 AM
#5
Do yourself a favor. Call NGK. They will ask you your engine combination, and tell you the best plug for your motor, as well as what gap to put on the plugs. The reach on those heads I believe is a .708 Maybe someone else could chime in to confirm. They will ask you about the reach when you call.
08-05-2014, 02:09 PM
#6
At 13.6 compression thats pretty hot. At that compression you should be using a 8 heat range. Then you could probably put some timing in it. We are using the 8 heat range on all motor engine as per our engine builder and NGK as well. We are at 34 degrees, and the motor loves it. We are at 13.5:1 Can definitely see and hear the difference if you change it 1 degree either way.