Page 2 - Combined_141_OCR

SPARK PLUG BA = 0 ir < 1 1 X ( / >
INDEX
0 Series —18mm Reach Battery Voltage 35, 37
F Series —18mm Conical Seat Booster-Gap 35
G Series —10mm .700" Reach Camshafts 29
H Series-14mm %6" Reach Cartridge-Fire 5
J Series - 18mm Reach Cleaning Race Plugs 38,39
K Series —18mm y2" Reach, 18mm .625" Reach. Coil, Ignition 35
18mm .445" Reach Coil, Polarity 35
L Series —14mm W' Reach, 14mm .472" Coloring, Plug 41
Reach 16, 18 Compression Ratio 28
N Series-14 mm %" Reach, 14mm .680" Reach . .20 Course, Nature of 28
P Series —12mm .402" Reach 18 Cross-Reference 36
R Series —12mm 3ZT Reach 22 Cylinder Heads, Custom 4
Z Series —10mm .492" Reach 19 Detonation 33, 26, 27
Discontinued Types 25
Distributor Maintenance 30
Drag Racing, Stock 37
Dual Purpose Plugs s
IMPORTANT-PLEASE NOTE! Elevation .....................................................................

O t CM
CO
Fouling, Return Line, Paddock 37
Fouling, Fuel, Oil 42, 43
A few years ago. correct reach and proper
Fuel Pressure Gauge 8
-eat range *ere t~® 0- ,t -ecuirements involved in choos- Fuels
rac -r z _z H
1
l>0
222- :: 2 - 2 :. z 2- : ■ 2 zys now allow the race W H O')
H O
= "g ~ 2 22: 2 - 2 • 2 - 2 -22-2" 2 2 2'.cice of gap style. The
Sc =zt cn :• ==z st- e • ’ -g end design) has a profound Gaps, Factory Tolerances
- 2 -: 2 : ■:: 2 2 .; ■ 2 2 -: -2 2e engine performance, Gaskets
Heat Range
n sc-= "22-22 = 2 -=z~anic has a choice of 3 to 4 “Hot”-“Cold” Plugs . .. .
zsz st* es :e: = dependent upon combustion “Hot” Ignition Systems .
chamber design •_ = 2-d-2:_e of the course. Gap style Ignition Reserve
Inquiries by Mail
advantages a rd d sar>=-jges are fully illustrated and
explained on pages 10 and 11 of this booklet. Jetting .
Methanol
This booklet is Migae in*e netted used to illustrate
Mixture .
- ==: 2 p zzs : : =-z •= 2: : - r : A heat ranges are Nitro
shown as ter graphs (the tagger the bar, the hotter the “P”-Gap ro f-* tn » - »
Plug-Master Wrench
plug). This is the most accurate way to show how much
26, 27
warmer or cooler each phK is io fetation to another, per-
Reach..........................................................................4, 5
mits more precise t-" = “d 22*2= : -=• and money in Preignition
“Reading” Race Plugs 40,42,43
arriving at the proper heat range
Regular Gap 10
The heat range numbering system and bar graph rela­ “R”- 9,29,30
Spark Advance, Total
tionships are fully explained c~ pages 6 and 7 of this Spark, Extra Horsepower 39
Spark Mark 42,43
booklet
Supercharging 32,33
Surface Gap Plugs 36
Testing Race Plugs 41
Torque, Plug 24
“U”-Prefix 4,35
Viewer, Plug 25
Racing Division
Voltage, Available, Required 34
CHAMPION SPARK PLUG COMPANY Warm-Up Plugs 9
P.O. Box 910, Toledo, Ohio 43601, U.S.A. “Y”-Gap 11
Please note: The contents of this book are copy-
2 righted by the Champion Spark Plug Co.
3