Edelbrock 13201 VRS-4150 Calibration Kit for PN 1306, 1307, 1308, 1309

The VRS-4150 Calibration Kit streamlines the gas-carb tuning process, offering a complete selection of the most commonly required components to precisely adjust the idle, intermediate, and main-circuit fueling for optimal performance.

PN 13201 Master Calibration kit contains over 130 pieces to facilitate tuning of all four VRS-4150 fuel circuits. Suitable for carburetors that use gasoline as a fuel (not E-85). Contains four each of main fuel jets 62, 64, 66, 68, 70 and 72 for quick global adjustment of the fuel curve. Four each of the air bleed 10-32 jets .024, .028, .032, .035, .040, .055, .060, .065,.070 and .075 allow quick small changes to the main, intermediate, and idle circuits. The 6-32 jets .020, .025, .031, .035, .055, .060, .063, .070, .073, .076, and .083 allow fuel changes to the idle, intermediate and power enrichment circuits on the metering blocks. 4 window power valves in 5.5 and 6.5 opening vacuums change the transition point from Cruise AFR to Power Enriched AFR. Finally, .033, .035, and .040 accel pump squirters change the duration of accel pump fuel from leaner and longer to a quick discharge.

Features

• Contains four of each even numbered main fuel jet from 62-78 for quick global fuel adjustment.
• Contains 40 fuel circuit 10-32 bleed jets for quick fine-tuning adjustments.
• Includes power valves and channel restrictors for ideal lean cruise to power enrichment adjustments

Specifications

Note: All jets are precision machined brass and made in the USA

⚠️ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.

Warranty: 12 Months