Ngk Bkr7e plugs. Gap may vary but I'd start at .028" gap closer if needed.
Coz runs the 8s. He's got roughly ~600whp but he's in Arizona where it's HOT. You might want to PM him also Steven if you need more feedback on the 8s.
I agree with ENL. 7s will go a long way.
Steven what is your turbo setup like? How much power are you planning on making. What turbo, intercooler setup? What fuel? I wouldn't really run 8's unless it was at least 700+whp and most in that category wouldn't be asking what plugs to run.
I think a lot of people jump to cooler plugs way too soon. 7's can go a long way.
I'm breaking it in as N/A with the OEM ECU, injectors, slightly used plugs, etc.
After it goes through the break-in process with multiple oil changes and I make sure there are no short-term problems with my handi-work, then I'll reinstall the AEM S2, twin turbos, injectors, meth, etc and tune with these copper plugs.
Sorry for the confusion.
Dave
I think Nick will eventually build my motor too. He's one of the best and close by!Coz and I use the same engine builder. Perhaps that's why we are using the same plugs... plus we both live in warm climates.
I think Nick will eventually build my motor too. He's one of the best and close by!
If you're not heating up the plugs so much that it's causing pre-ignition i'd try the 7's myself. I assumed Coz was running the 8s because it's hot out there in AZ. Let us know your results please!
Also, thanks for the little note on the FJO injection systems. I was not aware of them. I thought it was only Aquamist that sold a pulse type setup where the spray is always at constant pressure. I'm using a Snow unit whereby it's boost dependently only. I've got a short range of boost that a progressive spray may not matter too much. I've got it setup to begin spraying progressively from 1.5lbs to full boost at 4lbs (my max boost is 7.1lbs). I'm only spraying water too. When I eventually try meth I'll setup a 0-5V output on my F-Con that is based on RPM and Boost. Nice to see someone is already proving some ideas i've had circling in my head. Thanks!
I run the 8's like you do, as you know.
But I gap them at .025, easier on the ignition.
What happens when it's "hard" on the ignition?
P.S. I'm shipping my car to San Diego in 3 weeks to drive it to NSXPO. Hope to see you in California, or Arizona, or any of the other states I'll be driving through. I want to show you the new iLIFT system in action.
We prefer the NGK Iridium No. 7 (up to 425 bhp) or No. 8 (425 bhp +) depending on power level for boosted NSX. The factory plug has a gap of .044". Gap the plug down from .044" by approximately .004" per 50 bhp added from factory power.
The No. 7 plug comes pre-gapped at .044" and the No. 8 plug comes .032". Adjust the gap carefully as to not break the fragile electrode based on the above information.
http://scienceofspeed.com/products/engine_performance_products/NSX/NGK/NGK_Spark_Plug/
My tuner said it ran OK on the stock gap but he thought that it be happier with a smaller gap of .026.
I'm re-gapping the plugs to .026 and shipping the car to San Diego on Monday for the drive to NSXPO.
Hope to visit some fellow NSXers along the way.