What Turbo is on an STi Version 4
20 April 2004, 12:36 PM
#2
Originally Posted by Scott.T
Does the STi V4 use a VF series or a TD series Turbo.
I thinks it may be a TD04 or a VF24.
If not would the STi V4 Turbo give any advantage over a TD04 on an ECUTEK's UK car.
I thinks it may be a TD04 or a VF24.
If not would the STi V4 Turbo give any advantage over a TD04 on an ECUTEK's UK car.
20 April 2004, 01:43 PM
#4
Scooby Senior
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Don't make the mistake of assuming that two turbos producing the same level of boost will produce the same airflow and power.
A bigger turbo running more efficiently will add much less heat to the air it is pumping than a smaller turbo being run less efficiently. Cooler air is more dense and thus the larger, more efficient turbo will feed the engine more oxygen for the same level of boost.
I understood the VF24 to be a bit larger than a TD04, although there may not be that much in it, but the VF has a ball bearing (or roller bearing?) core which helps improve efficiency.
A bigger turbo running more efficiently will add much less heat to the air it is pumping than a smaller turbo being run less efficiently. Cooler air is more dense and thus the larger, more efficient turbo will feed the engine more oxygen for the same level of boost.
I understood the VF24 to be a bit larger than a TD04, although there may not be that much in it, but the VF has a ball bearing (or roller bearing?) core which helps improve efficiency.
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