Request clarification for the Honda B18a,bVS B18c
#30482 from Joe Harlan · Rule change · TB 21-07 (2021-07 Fastrack)
In GTL Engines - HONDA, change Split B18 as follows:
GT Engines - HONDA
Engine Type Bore x
Stroke
(mm)
Disp.
(CC)
Head Type Valves / Cyl. Fuel Induction Weight (lbs) Notes
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DOHC 81.0 X
87.2
1797 Alum,
Crossflow
4 22.5mm SIR 2050
DOHC 81.0 x 89.0 1834 Alum,
Crossflow
4 22.5mm SIR 2065