Non 4 valve weight reduction removed
#32808 from Bjorn Stange · Rule change · TB 22-08 (2022-08 Fastrack)
In STU Specifications, GCR Section 9.1.4.1.H.1., change Chart as follows:
"Factory Engine Displacement (cc) - 2400
Minimum Weight (lbs) - 2596 2595"
In STU Specifications, GCR Section 9.1.4.1.H.1., add the following:
"Normally-aspirated engines of fewer than 4 valves per cylinder may reduce base engine weight 9%."
In STU Specifications, GCR Section 9.1.4.1.H., remove the following and renumber:
"4. All Direct Injected (DI) Turbocharged engines will be limited in preparation. DI Turbo engines must use OEM compressionratios, OEM camshaft lift, and may not port the cylinder head."