What spark plug to use in a 12A?

t_g_farrell · 12-21-2011, 03:11 PM

So I've been using stock NGKs in my 80 GS SA 12A stockport. I've got a better
ignition system cobbled together and it has proven very reliable and powerful
compared to the stock or a 2GDFIS that I had before. I call it TFIDFIS only
because it uses some Ford TFI truck coils and GM HEIs for the ignitors. I run
leading only with no trailing and it can start my engine even when flooded.

I have a discussion on the other forum for that so I won't go into it here in
detail. Maybe I'll pull it over and post it here if theres interest.

I'm thinking I can get a bit more of an edge out of a better spark plug next time
I change em. I used to hear that 2G plugs were the best but now I understand
that maybe Rx8 plugs are actually the best. I'd loved to see some folks on here
weigh in and discuss it. I haven't made up my mind yet but I'd love to see if
anyone has numbers that can prove one plug is better than some other.

12-21-2011, 03:11 PM	#1
t_g_farrell Waffles - hmmm good Join Date: Aug 2008 Location: Huntersville, NC Posts: 757 Rep Power: 0	What spark plug to use in a 12A? So I've been using stock NGKs in my 80 GS SA 12A stockport. I've got a better ignition system cobbled together and it has proven very reliable and powerful compared to the stock or a 2GDFIS that I had before. I call it TFIDFIS only because it uses some Ford TFI truck coils and GM HEIs for the ignitors. I run leading only with no trailing and it can start my engine even when flooded. I have a discussion on the other forum for that so I won't go into it here in detail. Maybe I'll pull it over and post it here if theres interest. I'm thinking I can get a bit more of an edge out of a better spark plug next time I change em. I used to hear that 2G plugs were the best but now I understand that maybe Rx8 plugs are actually the best. I'd loved to see some folks on here weigh in and discuss it. I haven't made up my mind yet but I'd love to see if anyone has numbers that can prove one plug is better than some other. __________________ 1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs Project Fat Nikki Budget 12A rebuild Video setup < $30.00