Lost & Found2

I know this has been talked about again and again, but the search engine didn't pick up $hit. <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" />
So what other FI plugs are there other then NGK TR6?

Thanks
Jay

Lost & Found2

ttt

kino

Have you looked into getting iridium plugs? I know Denso makes them and also I believe NGK makes a set of iridium plugs.
Try www.densoiridium.com

You may be able to find what you need.

Texas Terminator

not if you are supercharging or juicing it

Lost & Found2

That's my fault guys, I left out that I'm running a supercharger and was looking for cold plugs like the TR6. <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" />

MelloYellow

NGK TR6
NGK BR7EF
Denso IT22 $$
Denso IT24 $$
Champion S57C
AutoLite 103
AC Delco FR1LS

bgreen

FWIW, i've had good luck with Iridiums in non-LS1, turbo apps. I've yet to hear of any bad results with Iridiums, honestly. Had a set in my Syclone for almost a year, and the Syty's are typically *horrible* with ignition. Doing a plug swap every week or so wouldn't be out of the ordinary.

NGK TR6IX would be the Iridium NGK model of the TR6.

I have heard Duttweiler became a fan of them after some testing.

kino

bgreen , I've been thinking about going to iridiums but after seeing the price for the Densos I was definitely <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
Are the NGK iridiums cheaper than the Densos? i have NGK TR6s in my car but I'm really curious about the iridiums.

bgreen

They're still expensive <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

prolly $6 or $7 each, unless you can find a buddy that gets a discount.

Black LS1 T/A

Autolite 103's

turbolx

FWIW, we've seen absolutely ZERO benefit (on the street or on the dyno) from switching a properly tuned car over from NGK TR6's to iridiums in several applications. Save your money.

Pro Stock John

iTrader: (34)

Some LT1 guys use the R42LTS's? Something like that?

bgreen

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by turbolx:
<strong> FWIW, we've seen absolutely ZERO benefit (on the street or on the dyno) from switching a properly tuned car over from NGK TR6's to iridiums in several applications. Save your money. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for your info. What kind of buildups were those, if you don't mind me asking?

On an LS1 - probably not necessary, as their ignition system is damn good. Plus I have yet to see an LS1 that runs high boost(high boost being relative - in my turbo setups, I'll do 20-25psi, and you find out if your ignition is up to par pretty quick). The ignition is pretty poor on the turbo stuff I've done (in comparison to the LS1 coil near plug setup), and anything you can do to increase energy at the plug is good. In those situations, I think the Iridiums would be a good choice (if you can afford it <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> ).

y2khawk

iTrader: (5)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by bgreen:
<strong>On an LS1 - probably not necessary, as their ignition system is damn good. Plus I have yet to see an LS1 that runs high boost(high boost being relative - in my turbo setups, I'll do 20-25psi, and you find out if your ignition is up to par pretty quick).</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">it becomes VERY sensative to rich misfire at 18 psi. TR6's at .028, and it only takes .1 A/F change to cause misfire.

turbolx

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by bgreen:
<strong> Thanks for your info. What kind of buildups were those, if you don't mind me asking?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">1) Turbo LS1, 7psi
2) N/A 4.6L 2V Mustang
3) Supercharged 4.6L 4V Mustang, 9psi

Same results every time, no different than a fresh set of NGK's.