I spoke with someone today about a real cold plug. Something colder then a NGK TR6, it was a TR8si or TR8xi or something like that.
Has anyone used these before?

 

hmmm i dont see a part # for a TR8 if it exists

I know of colder plugs but never seen the tr8

 

50-R5724-8 thats the part # for the ngk -8's i believe these are three steps colder.

50-R5724-9 part # for -9's 4 steps colder.

you can get these from thunder racing, thats where i got the part numbers.

 

Its a 5671-aX x can be 7,8,9,10 it annoys me when people say TR8's. Makes me think of somebody saying nawwws.

 

I've ran them for awhile, I picked mine up from Thunder.

 

for my old 150-shot i ran a BR7EF....NGK....worked good.

 

any and all NGK plugs are available at advance autoparts.. i work there i know.. however after talking with the guys at NGK booth at sema the tr7's and up will only be available in iridium for 2005 so if you want non iridiums get them now

 

what size shot would you be running to need something that cold cause that is pretty extreme it seems to me

 

i would never spray anything on stock plugs.. i would run a tr6 (4177 is the stocking number) and stay there up to 150 ( some say higher but i dunno it worries me) above 150 i'd go to a 7

 

NGK STOCK NUMBER IS 4554 that is the -8's and I run them all the time...really good cold plug!!!!

 

How do the act for N/A apps when not spraying?

 

the 6's and 7's act just fine

 

Yeah I've been running the 6's, I was just curious about the 7 and 8's ....

 

okay so these plugs are being used, and are popular with the Nitrous guys.
At 11.85 compression and a 200 shot would the TR7 or TR8's be a better choice?
I run the car twice a week around town so I need a plug that will work for both.

 

If you put timing back in the motor for around town i think you will be fine.

 

So maybe a dry shot would be a better option.
I have 50 lbs injectors, 2 fuel pump's etc etc, fuel isn't a problem.
I could tune the car on motor and let the MAF sensor do the rest.

 

I would use 8's.

 

Everybody setup is diffrent you just have to try it. Colder is saver than to hot.

 

Hey andy do you want to stop by tomarrow and give me a hand pulling out the motor it is ready to go. we can get beers and talk **** if you have time . Call me.

 

I'll be there at 2:30! Right after work.