anyone using stealth heads

[benno440]

guys i have a full set of ngk iridium (XR4IX) plugs there and i put one into my head before installed and the plug tip sits about half an inch back in the thread, and the hex part of the plug hits the casting of the head. what it looks like is that the plug does not go far enough into the head.

anyone able to tell me the correct plug to use for these heads? i would much prefer iridium plugs or similiar..

thanks in advance

 

[Moparmatt72]

440 source has champions for them they require a 3/4 inch longer thread. I'll have to get back to you on the iridiums I bought a set for mine but going to tune the engine on the champions

 

[benno440]

anyonne able to help with the iridium equivalent for these stealth heads?

 

[Mick70RR]

BCPR6EIX-11

I use BCP6ES and used this chart to find the equivalent Iridium.

http://www.clubplug.net/ngk_ngk_iridium.html