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Throttle Body Size, Can It Be To Big?

boostn32

By boostn32,
in Engines & Forced Induction

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boostn32 Mentor

boostn32

Posted
Posted

Im fabricating a new plenum for my RB20, i was thinking a 80mm or 90mm tb, will this be to big.

power will be up around 500hp at the engine. what are your thoughts.

also can the plenum be too big, im thinking around 4 litre in volume.

Thanks Luke

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The Dan Grand Master

The Dan

Posted
Posted
Im fabricating a new plenum for my RB20, i was thinking a 80mm or 90mm tb, will this be to big.

power will be up around 500hp at the engine. what are your thoughts.

also can the plenum be too big, im thinking around 4 litre in volume.

Thanks Luke

Standard Tbody will suffice

bubba Grand Master

bubba

Posted
Posted (edited)

Have seen 365rwkw through a standard RB20 throttlebody.

There is also no point in having a throttle body that is bigger than your cooler piping.

Really large throttlebodies can result in drivability and tuning issues.

Edited by bubba

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