I know that there have been numerous threads on this but none of them seem to come to any kind of conclusion.

I know that people have said to use the 370Z spark plugs, but they aren't copper.

I am going with a nitrous set up in the next few weeks and need to know where to get some One Step Colder Copper plugs for the HR motor.

Thanks in advance.

 

I think you may be out of luck finding copper plugs. I don’t believe anyone makes them. I’m running nitrous on my 08 with the 370z plugs and have no problems. Courtesy parts is a good place to look for the 370z plugs.

 

http://www.atlanticspeed.com/product...idproduct=5599

Here ya go. Good luck with nitrous, let us know how it goes

 

These will work for the HR motor? And thanks!

 

What's different between the 370z and 350z spark plugs that make them better for nitrous?

 

Most likely the difference is in the temperature of the plugs as-is (1 step, 2 step, they're all relative) and/or the gap size.

 

I'm sorry, but I don't mean to attack anyone by this but it seems as though all I've heard about the 370z stock spark plugs working fine for nitrous has been straight out speculation of he said, she said... I dunno much on the subject, so I myself would rely on just that but there's no supportive information on any of these threads where it's stated that the 370z spark plugs could be used. I just want closure that the 370's spark plugs would definitely be better than just leaving my stock 350z plugs while running nitrous.

 

I never ran nitrous on my Z with my stock plug only on 370z plugs, but after numerous track runs and 2 dyno sessions I have no fouled plugs or idling problems. I went through four bottles and then checked my plugs.

 

Thanks for your input Guy, at least we know there isn't a negative affect running those spark plugs as of now.. but then again, I've read that 1 step colder plugs aren't really need until you step up to 100 shot.

 

I'm gonna be installing my nitrous this week and will be using the 370Z plugs as well.

Can anyone link me to where I can buy them

 

what shot are you planing on using and what system?

Please do let us know how it comes out and take pics!

I've been following this nitrous forum for sometime now and I too would eventually get nitrous in my z.

 

http://www.courtesyparts.com/22401-s...-p-617106.html

You will need 6 spark plugs.

Install is a little tricky, but by no means difficult. You will need to remove intakes of course and throttle bodies in order to get to the rear coil packs.

 

Thanks for all the help guys.

I'm planning on running a 50 or 75 shot. (Depending on how comfortable I am with the added power).

As for the system, either Zex or Nitrous Express.

 

They are irridum plugs though, the 370 ones, correct? Still not a great idea with larger shots of nitrous. When I get around to doing it, i'll cross the stock plugs and find some coppers that work. There are hundreds of spark plugs out there, i'm sure I can find something that will physically work, 1-2 steps colder, in a copper plug. I'd bet it will be made by NGK as well

 

bump. Any updates? Im considering to purchase after tax return comes in :-) Running Full-bolt on my HR.