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MODIFICATIONS => Performance => Topic started by: dogginred90 on April 30, 2009, 10:44:55 PM

Title: Autolite-Xp-Iridium / Spark Plug
Post by: dogginred90 on April 30, 2009, 10:44:55 PM
Is anybody running these? And if so, are they any good?


                                     Thanks
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: TGed on May 01, 2009, 01:36:59 AM
I will never use AL's in my GM engines ever again.
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: dogginred90 on May 01, 2009, 07:52:08 AM
Hey cuz stay of my screenname, it flipped me out when I saw I posted something. I must of been sleep posting.LOL
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: TGed on May 01, 2009, 11:23:15 AM
ummmm wtf? 
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: dogginred90 on May 01, 2009, 11:46:41 AM
My cousin has a 89 Z24 with a 3.1 turbo in it, and instead of getting his own screenname he uses mine. So I just was surprised when I loked and saw that I posted something with out knowing.
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: jerry455 on May 01, 2009, 11:51:54 AM
have had good luck with ac rapidfires. been in there for over a year. not modded yet but starting to.
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: TGP Nick on May 01, 2009, 02:18:28 PM
These ignition systems don't work well with platinum plugs.

AC Delco R42LTS plugs work the best.  If you're running more boost than stock, you can gap them to .030".
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: dogginred90 on May 01, 2009, 08:36:05 PM
thanks
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: flybynite on May 02, 2009, 09:57:21 AM
Quote from: TGP Nick on May 01, 2009, 02:18:28 PM
These ignition systems don't work well with platinum plugs.
AC Delco R42LTS plugs work the best.  If you're running more boost than stock, you can gap them to .030".
X2   
I am not a big fan of autolite plugs, They only work good in Fords. Autolite has a very good race plug that I use on a regular basis but thats it...  :icon_twisted:
TGPs work best with the stock plugs...  ;)
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: mfewtrail on May 02, 2009, 05:09:42 PM
I'm currently running autolite 103's in my black TGP. They've been in there about 2-3 years now and it runs perfectly.

Here's a quote from a rep at NGK that's sorta ontopic...

"You are correct that NGK is a supplier to General Motors. AC Delco is not a plug manufacturer but rather just GM's brand. NGK as well as Denso and I believe even Honeywell supply spark plugs to General Motors."

^Honeywell = autolite. ;)
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: Serge A. Storms on May 02, 2009, 07:30:37 PM
On a similar note...What's the best spark plug wire?

I owe my friend a set... :icon_redface: Don't ask. lol
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: TGP Nick on May 02, 2009, 08:06:29 PM
Again, AC Delcos work great.  I couldn't justify spending big $$$ on a spendy set of aftermarket wires when the factory ones work great.

For anything Ignition related, stick to AC Delco products.
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: Serge A. Storms on May 02, 2009, 08:16:06 PM
Well, the Delcos are $50 and Taylors are $64...ARGH! lol
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: TGP Nick on May 02, 2009, 08:39:57 PM
The Delcos can be had for a good price on rockauto ;)
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: mfewtrail on May 02, 2009, 09:27:44 PM
Quote from: Serge A. Storms on May 02, 2009, 07:30:37 PM
On a similar note...What's the best spark plug wire?

I owe my friend a set... :icon_redface: Don't ask. lol

I do like the Delco's when it comes to wires. ;)
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: dogginred90 on May 02, 2009, 10:13:53 PM
thanks again guys,  The info has been great.
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: Prospeeder on May 04, 2009, 05:32:16 PM
Napa Belden Lifetime silicone wires are like 32$ for our cars....
Title: Re: Autolite-Xp-Iridium / Spark Plug
Post by: mars on May 06, 2009, 10:01:09 PM
AC delco all the way in these motors. R42LTS

Close the gap for high boost / RPM

I am a bit under 0.030" gap, any larger and it was snuffing the spark over 6400 RPM @ 15 psi.