ngk tr6?

[Digger]

ngk tr6?
Does anyone know what the equivilant heat range is in the Denso Iridium plugs, to match the NGK TR6's ? And the gap? thanks

 

[Taz]

The TR6 is 1 step colder than stock. That would be an IT20 in a Denso Iridium.

For an N/A motor, CAREFULLY gap the IT20 plugs to .050.

T-

 

[Digger]

TAZ, I should have mentioned that the car is super charged I am running the tr6 now but can here misfires at idle once in a while. Would the it20 be okay or colder? When I ran the br7 from ngk the car kept shutting down so I changed back to tr6 and all okay

 

[peterjmc]

Would using the TR6's on a N/A motor be fine? or would you recomend using the TR5's?

 

[Taz]

Originally posted by Digger
TAZ, I should have mentioned that the car is super charged I am running the tr6 now but can here misfires at idle once in a while. Would the it20 be okay or colder? When I ran the br7 from ngk the car kept shutting down so I changed back to tr6 and all okay

IT20's should work fine, but you'll want to close the gaps down to .035 in an F/I motor to prevent spark blowout. If you're running more than 10lbs of boost, you might even want to gap them down to .030.

Your idle miss should disappear with the IT20's. I'm using IT16's (stock heat range), which I bought to cure the same problem in my N/A snake. They did the trick for me.

Peter,

The TR6 will work in your N/A motor, but it's a colder plug than stock. The only motivation for moving to a colder plug is to avoid detonation. If you're not having a problem, stick with a stock heat range plug.

T-

 

[04cobra408]

I just ordered the br7's off the recommondation of the shop i order them from. Anyone else run them with success?

edit. sorry, i just noticed how old this thread was.