IJSBA · Engine
Ferrous-only is near-universal where rods are allowed at all.
20 classes, grouped by the answer rather than listed one by one, because an answer that holds for a class usually holds for every class that borrows its rules.
Not permitted, not listed in the rules Our reading, not a rule we can quote at you. This class requires the craft to stay stock except where the rules allow otherwise, and this part is not on the list.
Not permitted, not listed in the rules 7 classes
Not listed in this class document. Illegal under the closed-list principle.
Legal, within limits 2 classes
Four-stroke ferrous rods with changeable length.
Legal, within limits 1 class
Ferrous only; 110mm rods only.
Legal, within limits 1 class
Ferrous only. Rod length may not change.
Legal, within limits 1 class
Non-ferrous prohibited; rod length may not change.
Legal, within limits 1 class
OEM rod length and journal diameters retained.
Legal, within limits 1 class
Ferrous materials only; rod length modification allowed. · SKSS.3.7
Legal, within limits 1 class
Ferrous only; rod length alterable.
Legal, within limits 1 class
Ferrous only; rod length changes allowed.
Legal 4 classes
Explicitly permitted by this class document.
Aftermarket connecting rods: if the rule your class applies reads differently to you, or the rulebook has changed since this was read, ask. We answer with the section we read it from, or that we have not read it. Ask a rules question.
Every IJSBA class · where the rulebooks differ · signed checks on parts the shop sells.
Engine · two and four stroke · legal outright in 13 of 20