What is SFI spec?


What is SFI spec?

SFI Specifications establish uniform test procedures and minimum standards for evaluating and determining performance capabilities for products used by individuals engaged in competitive motorsports.

What does SFI stand for in cars?

Basically, a SFI (sequential fuel injection) system has a fuel injector for each cylinder. Each of these injectors puts fuel into the system at 30-40 PSI before the intake valve.

What is a 25.5 chassis?

The SFI Spec 25.5 has been revised, effective May 12, 2015. The newly revised version is designated as SFI Spec 25.5C and is for Full Bodied Car Stock or Modified/OEM Floorpan and Firewall with OEM Frame or Uni-Body Construction – 7.50 to 8.49 Seconds; 3,600 lbs. Maximum.

What is a 25.3 chassis?

This 25.3 chassis spec is intended to for OEM frame or OEM-modified frame door cars that are faster than what a 25.5 covers, but heavier than a 25.2. The sanctioning bodies, along with SFI quickly recognized the need for this separate spec.

How much does a 25.2 chassis cost?

$3,170.99 – Please call 309-343-7575 to order.

What is SFI approved Flexplate?

This B&M flexplate is engineered to handle the extra stresses of high RPM and extreme duty applications. It meets the SFI 29.1 specifications for automatic transmission flexplates, and is legal for all classes in NHRA and IHRA. An SFI certification sticker is included (recertification is required every three years).

How much is a NHRA chassis certification?

The sportsman chassis tag runs $170, and are valid for 3 years. Or you can capture a professional-level certification for $260.

How much is a pro mod?

$275,000 to $350,000
That said, a pro mod drag car will cost from $275,000 to $350,000. The body and internal parts generally cost around $200,000, while the engine costs between $50,000-$100,000 extra. This may vary based on other vehicle specifications, but the price will always be high.

What steel is used for roll cages?

Cage materials typically include hot rolled electrically welded (HREW) steel, drawn over mandrel (DOM) steel, and chromoly DOM steel.

How long is SFI certification?

5 years
SFI 38.1 head and neck restraints must be recertified every 5 years to maintain SFI certification. All devices that pass inspection will receive a new SFI 38.1 conformance sticker marked with the inspection date. The recertification will remain valid for 5 years.

Who makes SFI Flexplate?

Now available: 166 tooth flexplates to fit all popular size SFI 6.3 spec cans! ATI has developed the Superplate line of Flexplates to keep up with rampant HP gains made each year. Superplates are manufactured from a material with a 90,000 lb. tensile and 80,000 lb.