Page 506 - 2022-23 Auto Performance Open Wheel Catalog

ProMag Timer XTRPROMAGTIMER
For Sprint Cars with ProMag ignitions, it was impos- sible to set the timing without running the engine, until
now. The ProMag uses an inductive pickup ignition— something traditional buzz boxes can’t sense. The ProMag Timer is a 100% solid-state, computer-con- trolled tool with a bright LED light and buzzer to tell you where to set your distributor for perfect timing.
Xtreme Fuel Stick XTRDIPSTICK
Save weight and put an end to running out of fuel.
Xtreme Fuel Stick tracks the fuel used in heat and feature races, informing race teams how much fuel is truly needed for each race. Hand-held, 9-volt battery powered unit can measure fuel depth up to 30” and display up to 99.9 gallons on the easy-to-read, bright red digital display. Sophisticated device may be trained to the shape of any two different fuel cells. Sold complete with battery and instructions.
Yella Terra brings affordable race rockers into the 21st century, eliminating the problems associated with studs, guide plates, and stud girdles. Serious engine builders use and recommend shaft rockers for a more stable valve train and more horsepower.
Digital Tachometer XTR1000 Lightweight, 9-volt battery powered digital ta-
chometer reads and stores data from the last four
laps, capturing the eight highest RPM readings, and
eight lowest RPM readings, then removes the high-
est and lowest RPM readings from each group and
calculates the average high RPM and the average
low RPM. This gives a true snapshot of the car's
performance. Bright red digital display is easy to read, day or night. The Xtreme Accu-Tach will work on 4-, 6-, and 8-cylinder engines using an MSD or magneto, up to 15,000 RPM. Factory pre-set for 8-cylinder op- eration. With a push of the display button after the last race, the Xtreme Accu-Tach will display four numbers;
(1) The highest RPM the engine turned in the last race
(2) The low average RPM turned in the last race
(3) The high average RPM turned in the last race
(4) The seconds the engine took to rev from low average to high average
Ignition Controller
XTRXTREME30
Manufactured with a replaceable ignition coil, 30-amp capacity, and digitally set rev limiter, this ignition controller will increase both horse- power and torque.
Platinum Twin-Shaft Rocker Arms
Intake and exhaust rockers are joined in pairs on a shaft that is 22% larger and engineered for extreme RPM. Maximum width bearings deliver greater rigidity, resistance to break- age, and superior load-carrying ability, eliminating the need for screw-in studs,
guide plates, and stud girdles. Rocker arms bolt to existing 7/16" stud mounts with supplied bolts. Easy to service in the field. Sold in sets of 16.
Part No. Engine Cylinder Head
Rocker Pedestal
and Saddle Shims YTRYT6241
For Platinum twin-shaft rockers. .100" (2.5mm) steel. Each.
Pedestal Spacers for Platinum and Platinum Plus Rockers
Ratio
Replacement Rocker Arm Components
Part No. Description
Part No.
Description
YTRYT6279
1.020" Dia. x .085" (26mm x 2.0mm), Each
YTRYT6580
1.020" Dia. x .100" (26mm x 2.5mm), Each
YTRYT6581
.020" Dia. x .150" (26mm x 3.8mm), Each
SB Chevy
YTRYT6008
265-400
OEM/Bowtie/AFR/Dart/World/Brownfield
1.55/1.55
YTRYT6009
265-400
OEM/Bowtie/AFR/Dart/World/Brownfield
1.6/1.6
YTRYT6341 †
265-400
OEM/Bowtie/AFR/Dart/World/Brownfield
1.6/1.5
† Rocker arms in this kit have an extra .070" pushrod offset on intake for repaired or wider ports.
YTRYT5060
Caged Roller Bearing, All Rockers
YTRYT5099
Roller, Pin, and Circlip Kit
YTRYT5115
Adjusting Screw and Nut, 24mm
YTRYT5117
Adjusting Screw and Nut, 28.4mm
YTRYT6088
Mounting Bolt, 7/16" x 2.000" Long
YTRYT6098
Mounting Bolt, 7/16" x 2.250" Long
YTRYT6263
Saddle, 7/16" x 28.6mm Ht.
504
2022-23 PARTS AND ACCESSORIES