Ragtop 99

iTrader: (7)

My ARE S2 heads should be milled to 10.8:1 or even slightly higher compression. Is there any advantage to running a colder plug like the TR6 (instead of TR55) in terms of being able to either run a little more timing or a slightly leaner mixture?

Scalpel

iTrader: (4)

I think a colder plug is a must with the much more turbulent air charge coming into the cylinders and the higher compression. These two factors can lead to detonation very quickly so yes, a TR-6 and the right gap would be ideal <img src="gr_grin.gif" border="0">

Doug Tschantz

TR6's here 11.3:1 comp.

Doug
00Pontiac

VINCE

iTrader: (1)

TR6's with my 11.4:1 compression..

Ragtop 99

iTrader: (7)

thanks.

What Gap are you using? I'm guesing .40 to .45?

Scalpel

iTrader: (4)

For every 50 HP you had over stock you need to decrease your gap by .004, so 150 HP over stock is .012 decrease from stock gap. <img src="gr_grin.gif" border="0">

Ragtop 99

iTrader: (7)

<img src="gr_images/icons/cool.gif" border="0">

Colonel

So long as you're not getting detonation I see no reason to run a cooler plug.

12.2:1 compression and TR-55 plugs here.

If I were trying to run pump gas on the street I would be running TR-6s.

mikey

iTrader: (6)

I'm with Steve on this one. You run the risk of fowling plugs sooner than usual.

Mikey