Anyone?? I just looked at the mock up in the "please make a DP for ebay manifold" threafd and saw that external WG and it looks retarded big, as they all seem to be, just wondering why they are all so damn big?
Why are external WG's so F'ing huge??
- Thread starter Red Dragon
- Start date
So it flows more air faster. A small gate flows less air slower, and therefore takes longer to release the same amount of air as a large gate, and that time could affect other things if it was too long.
eric
eric
Mainly to make up for the trend in the past to run tight AR's and mismatched Compressor/Turbine sections.
Tighter the AR the larger the WG has to be to control shaft speed.
A perfectly matched Compressor/Turbine and Motor would have no need for a WG at all as long as it wasn't required to change engine speed as in Idle/Acceleration/Cruise but as all of these are needed for a car we size Turbines Smaller/Tighter than ideal then bleed off the extra when the Turbine reaches the required speed.
If you run a loose AR you'd be surprised at how small an opening of the WG is needed to control the speed so you can get away with a quite small Gate.
In the Old days running without a Gate was sort of common as Turbine selection was limited and "free floating" setups couldn't produce enough boost to hurt the motor but these days Turbos are so much more advanced no WG = Large Bang and a - bank balance!
Tighter the AR the larger the WG has to be to control shaft speed.
A perfectly matched Compressor/Turbine and Motor would have no need for a WG at all as long as it wasn't required to change engine speed as in Idle/Acceleration/Cruise but as all of these are needed for a car we size Turbines Smaller/Tighter than ideal then bleed off the extra when the Turbine reaches the required speed.
If you run a loose AR you'd be surprised at how small an opening of the WG is needed to control the speed so you can get away with a quite small Gate.
In the Old days running without a Gate was sort of common as Turbine selection was limited and "free floating" setups couldn't produce enough boost to hurt the motor but these days Turbos are so much more advanced no WG = Large Bang and a - bank balance!