Nitrous Oxide Systems: Understanding Wet vs Dry Solenoids - DSPORT Tech Guide

Nitrous Oxide Systems: Understanding Wet vs Dry Solenoids - DSPORT Tech Guide

By Michael Harrison

January 23, 2025 at 03:01 AM

A comprehensive guide to nitrous oxide solenoids, focusing on their operation, types, and maintenance for optimal performance.

Wet vs. Dry Nitrous Systems

  • Dry systems use only nitrous solenoids; additional fuel comes from injectors
  • Wet systems use both nitrous and fuel solenoids with "fogger" type nozzles
  • Modern fogger nozzles improve fuel and nitrous mixing efficiency

Nitrous oxide system parts

Nitrous oxide system parts

Solenoid Characteristics

  • Function as control valves for nitrous and fuel flow
  • Operate on 12V power supply
  • Current demands:
    • Nitrous solenoids: 10-20 amps
    • Fuel solenoids: 6-10 amps

Horsepower Ratings and Specifications

  • Determined by inlet/outlet size, orifice size, and lift
  • Common configurations:
    • Entry-level: 150-200hp (1/8" NPT)
    • Mid-range: 200-600hp (1/4" NPT inlet, 1/8" NPT outlet)
    • High-end: 1000+hp (1/4" NPT inlet/outlet)

Black 253 nitrous engine shot

Black 253 nitrous engine shot

Critical Safety Rules

  1. Never swap nitrous and fuel solenoids
  2. Avoid modifications to solenoids
  3. Use proper tools for servicing
  4. Install filters for both fuel and nitrous
  5. Use appropriate wiring and high-quality relays

Preventing Solenoid Failure

  • Regular maintenance schedule
  • Proper installation and setup
  • Use appropriate size solenoids (50% higher than planned shot)
  • Filter installation before solenoids
  • Quality wiring and connections

Nitrous oxide solenoids in car

Nitrous oxide solenoids in car

Maintenance Tips

  • Service intervals based on usage frequency
  • Professional servicing recommended for beginners
  • Keep proper tools and spare parts available
  • Regular inspection for wear and damage
  • Clean components thoroughly during service

With proper maintenance and adherence to safety guidelines, solenoids can provide reliable, long-term performance in nitrous oxide systems.

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