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On an engine with two inlet valves per cylinder it means that there are two ports in the cylinder head and inlet manifold for each cylinder. (IE one for each valve.)
Port refers to the passage that air/fuel enters the cylinder through.
Older designs had one port in the manifold & head leading to the two valves.
What else can I help you with?
What does twinport mean when referring to an astra sxi and what does sxi stand for?
Basically, it's a variable length intake tract, which allows for high torque all through the rev range. and the sxi means sexy
Does vauxhall astra sri mean its a turbo car?
no
What does insp2 mean on vauxhall astra 54 plate?
You have a bulb out...
What does code 82 mean on vauxhall astra?
In means it needs a service
What does the snowflake button mean in a vauxhall astra?
The snowflake is the standard symbol for airconditioning.
What does diagnostics code p1230 mean vauxhall astra 1.6 8v 2002?
P1230
Spanner light on vauxhall astra what does that mean?
Some things Wrong! Get it checked. Take it for a service!
What does insp on the dashboard of a vauxhall astra 2006 model mean?
i think its somethink to do with the service is due
What does insp3 mean on your vauxhall astra 06 plate?
Low battery voltage of remote key.
What does CDTI mean on the vauxhall astra life model diesel?
Creme' Deluxe Turbo Injection
What is the orange engine light mean on vauxhall astra 1.6 2002?
on an earlier model it meant problems with ECU
What does error code 22 mean for vauxhall astra?
Although it may be entirely dependent on the exact model of the Vauxhall Astra most forums point to error code 22 as a right front sidelight failure which can be easily resolved by simply replacing the faulty light.
