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IHRA-Tech e-Bulletin 7. 7th February 2020
TRANSMISSION / FLYWHEEL SHIELD
 
 
General Reg 3680, Safety, Flywheel Protection, Shield
If flywheel shield is required, then formed or fabricated from 6mm (1/4 inch) steel and covers area
from 25mm (1 inch) in front of the flywheel to 25mm (1 inch) behind the clutch and pressure plate.
Mandatory
 
General Reg 3690, Safety, Drivetrain, Flywheel Protection, Shield
If flywheel shield is required, then bolted to bellhousing.
Forbidden
 
General Reg 3700, Safety, Drivetrain, Flywheel Protection, Shield
If flywheel shield is required, then secured to frame or chassis.
Mandatory
 
General Reg 3710, Safety, Drivetrain, Flywheel Protection, Shield
If flywheel shield is requested, then removed to be inspected during technical inspection.
Mandatory
 
General Reg 3720, Safety, Drivetrain, Flywheel Protection, Shield
Engine is Porsche or Volkswagon and normally aspirated and gasoline and slower than 10.99 seconds (1/4 mile) and no flywheel shield.
Allowed
 
General Reg 3730, Safety, Drivetrain, Flywheel Protection, Shield
If Porsche or Volkswagon engine faster than 11.00 seconds (1/4 mile) or using nitrous oxide injection or turbocharging or supercharging and no protective bellhousing of steel or titanium is commercially available and not using a ballistic blanket compliant with SFI4.1 or an SFI-compliant flywheel shield from another application then flywheel shield installed and made of steel plate at least 1/4 inch thick, securely mounted to the frame or frame structure and completely surround the bellhousing 360 degrees.
Mandatory
 
 
General Reg 3760, Safety, Drivetrain, Transmission, Auto – Protection
If vehicle is dragster, altered or funny car and is fitted with automotive-based, automatic transmission, then fitted with ballistic blanket or external protective shield or transmission case that complies with SFI 4.1.
Mandatory
 
General Reg 3770, Safety, Drivetrain, Transmission, Auto – Protection
If vehicle fitted with a transmission brake and is fitted with automotive-based, automatic transmission, then fitted with ballistic blanket or external protective shield or transmission case that complies with SFI 4.1.
Mandatory
 
General Reg 3780, Safety, Drivetrain, Transmission, Auto – Protection
If vehicle is supercharged, turbocharged or nitrous oxide injected and quicker than 11.00 (1/4 mile) / 7.00 (1/8 mile) and is fitted with automotive-based, automatic transmission, then fitted with ballistic blanket or external protective shield or transmission case that complies with SFI 4.1
Mandatory
 
General Reg 3790, Safety, Drivetrain, Transmission, Auto – Protection
If vehicle is quicker than 10.00 (1/4) / 6.50 (1/8mile), and is fitted with automotive-based, automatic transmission, then fitted with ballistic blanket or external protective shield or transmission case that complies with SFI 4.1
Mandatory
 
General Reg 3800, Safety, Drivetrain, Transmission, Auto – Protection
If ballistic blanket fitted, then approved by SFI.
Mandatory
 
General Reg 3810, Safety, Drivetrain, Transmission, Auto – Protection
If external protective shield fitted, then aluminium minimum 6 mm (1/4 inch) or 3mm (1/8 inch) steel.
Mandatory
 
General Reg 3820, Safety, Drivetrain, Transmission, Auto – Protection
If external protective shield fitted, then securely mounted, using two steel straps which pass under the transmission and are 25 mm wide and 3 mm thick
Mandatory
 
General Reg 3830, Safety, Drivetrain, Transmission, Auto – Protection
If external protective shield fitted, then provides protection for 180 degrees (pan rail to pan rail).
Mandatory
 
General Reg 3840, Safety, Drivetrain, Transmission, Auto – Protection
If external protective shield fitted which complies to SFI 4.1, then installation complies with manufacturer’s specifications.
Mandatory
 
General Reg 3850, Safety, Drivetrain, Transmission, Auto – Protection
If transmission case that complies to SFI 4.1 fitted, then installation complies with manufacturer’s specifications.
Mandatory
 
General Reg 3860, Safety, Drivetrain, Transmission, Auto – Protection
If ballistic blanket fitted or external protective shield, then removed during technical inspection.
Mandatory
 
 
 
 
 
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