HOTROD98Z

iTrader: (1)

I will be running TR6 plugs on my H/C setup, what gap should i run them at, i was thinking .045.

SSDude

I gapped mine at .45 as well.

Damian

iTrader: (89)

.045.....

WILWAXU

iTrader: (6)

Mine are at the stock NGK .035 gap.

Z28Venom

iTrader: (13)

I'm running the TR6's w/ my new H/C setup, but I didn't change the gap. They're still gapped at the .060.

What is the benefit of the .045 gap?

Thanks

Fenster

iTrader: (3)

From guys I have seen, .045 seems to be a fairly normal gap for a h/c car. My buddies 99 ws6 w/ N20 we gapped them at .035 though...

Z28Venom

iTrader: (13)

Thanks..
I guess I'll be buying a new set of plugs this weekend..

BADFNZ

iTrader: (19)

They come out of the box at .039 correct? Either way I gapped them to .045.

Junder

Gapping the plugs more than +/- .005 from what the manufacturer gaps them at is not a good idea since the terminals will no longer be parallel to each other. N/A FI engines can handle large gaps like .060. Blowers,turbos,NOS run better with smaller gaps (like .035). Run cooler plugs as well as things get hotter on power added engines and promote detonation. Anyway, gapping more than +/- .005 from factory gapping of plug will concentrate the spark into a smaller area, so ionized area of energy is smaller, so less gas is ignited, which means slower flame front and lower cyl pressure and all around loss of power.

14u2nv

I thought the TR6 plugs were a colder p[lug for nitrous not NA?

BADFNZ

iTrader: (19)

So I will lose power since I gapped my plugs .001 too much?

WILWAXU

iTrader: (6)

Also good for motors with a little more compression. (my case at least)

JaSSon

iTrader: (11)

Damien and WILWAXU, How much are your heads milled? I got 5.3s that are just cleaned up. Just wondering if Ill benefit from a colder plug with a smaller gap. Im running TR55s at .050 now with no knock. Why are you guys running a colder plug with smaller gap and what are the benefits?

CamaroCain

iTrader: (1)

mine are gapped @.042

Damian

iTrader: (89)

My heads are milled .020, compression is ~11.3:1 and I have no problems with my TR6's in 90 degree weather and 28 degrees timing. Nothing wrong w/ a TR55 in a stock compression motor, but anything above and i'd recommend the TR6 just for reassurance that the motor won't ping in hot climates. The TR6's dont give up any power to the TR55, and much less chance of detonation.

JoSeY

.042 is a pretty good all around gap. I had my TR6's gapped @ .040 and I never saw KR even on HOT Summer days in Houston, TX...and see sig for my setup.

SSLink

Same here. Mine are gapped at .045." I ran my last set gapped at .050" with no problems, but went a little more conservative this time around.

On an N/A setup the TR6's help remove a little more heat from the combustion chamber and provide a little extra protection against detonation and/or knock retard.

onyxxtreme

iTrader: (4)

what about a 10.5-10.6 compression ratio?
still better off with a TR6?
i already bought some TR55's and Im not really wanting to drive an hour away to exchange em

WILWAXU

iTrader: (6)

My heads MTI Stage 2E's are milled .030