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Aftermarket turbocharger or supercharger

IJSBA · Forced induction

Aftermarket turbocharger or supercharger

Where allowed, the water-jacketed housing requirement is absolute.

Where it stands, class by class

14 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 legal 1 class

ONLY OEM HOMOLOGATED NATURALLY ASPIRATED FOUR STROKE ENGINES ARE · ALLOWED

OEM part required 1 class

Factory forced induction only, and frozen: no modification to any part of the system. · RAS.9.1

The rules do not say 1 class

No forced-induction section located in · SKSS

Legal, within limits 1 class

Impeller HOUSING must remain stock; all internals may be aftermarket. · RAL.5.1

Legal, within limits 1 class

Four-stroke forced induction up to 950cc. No boost cap recoverable.

Legal, within limits 1 class

Allowed on engines up to 1100cc. Boost relief valve required. Turbo housing must be full circulating water-jacket type whenever the engine runs. BOOST FIGURES IN SKGP.9.3 ARE CONTRADICTORY - verify before quoting.

Legal, within limits 1 class

Four-stroke 1100cc or less only. Boost relief valve set to release above 12.00 PSI, +/-1 PSI tolerance, never above 13.00 PSI. · SPGP.9.1

Legal 1 class

Aftermarket units allowed AND may be retrofitted to an originally naturally aspirated craft. · RSS.6.1

Aftermarket turbocharger or supercharger: 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.

Forced induction · four stroke · legal outright in 6 of 14

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BaddJet Class Legality