Ok guys,
I have ran across this a bunch of times... Which is the colder plug for nitrous use?

103 or 104?
Is one one stage colder and the other two? Which is which? I have heard of misfiring and plug fouling on one of the two and I can't remember which one...

I have the NGK TR5s in there now.. the TR6s were damn near impossible to find and I need to do new plugs and wires soon

Laters,
Andrew

 

I'm running the Autolite 103's with no problems. I'm almost positive they are 2 heat ranges colder.

------------------
<A HREF="http://personal.msy.bellsouth.net/msy/k/r/kraest/derrick.htm" TARGET=_blank>1994 Z28 A4
LT1 Motorsports equipped stock-bottom end LT1, LT1 heads, Hydraulic-Roller Cam, Dope
11.03 @ 125.53 1.61 60ft.
7.08 @ 99.05 1/8 mile</A>

<A HREF="http://stangnet.cardomain.com/member_pages/view_page.pl?page_id=229662" TARGET=_blank>1984 Mustang L
92' 5.0 roller motor, T5, NOS plate kit, etc.
14.03 @ 100.51 2.29 60ft. NA on street tires
Dope with slicks ????
</A>

 

ttt