2K4 - Profile/Spec Sheet

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INTAKE LOBE   EXHAUST LOBE
   
0.050 3 BTDC 0.050 37 BBDC
0.100 12 ATDC 0.100 20 BBDC
0.150 30 ATDC 0.150 1 BBDC
0.200 55 ATDC 0.200 24 ABDC
.2325 MAX LIFT .2325 MAX LIFT
0.200 35 BBDC 0.200 68 BTDC
0.150 9 BBDC 0.150 43 BTDC
0.100 11 ABDC 0.100 23 BTDC
0.050 29 ABDC 0.050 5 BTDC
 
IN OPEN 17 BTDC   EX OPEN 52 BBDC
IN CLOSE 75 BTDC EX CLOSE 17 ATDC
EZ START 54 ABDC EZ SPIN DUR. 33  
EZ STOP 87 ABDC EZ SPIN LIFT .016
IN CL 100.5   EX CL 111.5
APR LASH .005 APR LASH .0035

Part #: PC 2K3
Grind #:
Engine Info: Briggs Stock 5HP
Rocker Arm Ratio: N/A

  OPENS @ CLOSES @ APP. LASH (COLD) CENTER LINE MAX LIFT ADVERTISED DURATION
INTAKE 17 75 .005 100.5 .2325 301.50
EXHAUST 52 17 .0035 *111.5  .2325 246.00
             

CLASS IGN. TIMING RECOMMENDED RPM RANGE
WITH MATCHING COMPONENTS
SPRING PRESSURE
INTAKE EXHAUST
 IGN. TIMING
STOCK 30 6,400 - 7,200 20 20 .390
.575
RESTRICTED		 30 5,800 - 6,600 18 18 .380
.500
RESTRICTED		 31 5,200 - 6,400 17 17 .360
.425
RESTRICTED		 32 5,000 - 6,200 16 16 .370
SUPERSTOCK 31 7,200 - 8,000 21 21 .380

Use PC 1.450 springs with .425 & .500 restricted
Use PC 1.450 springs with .575 restricted
Use PC 1.485 springs with Stock & Superstock

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