Wastegate Porting or Oil Press.
#4
Mac Attack
iTrader: (5)
the amount of travel the wastegate actuator is capable of makes it fruitless to remove material from the flapper for more clearance.
If you have a caliper you can measure the size of the "circles" on the flapper, then port the passages as much as you can, while leaving a small area for the flapper to seal on. Remember that even if you port to the desired size, you will still have boost creep if you don't open up the inner passages as well.
If you have a caliper you can measure the size of the "circles" on the flapper, then port the passages as much as you can, while leaving a small area for the flapper to seal on. Remember that even if you port to the desired size, you will still have boost creep if you don't open up the inner passages as well.
#5
Rotary Motoring
iTrader: (9)
the amount of travel the wastegate actuator is capable of makes it fruitless to remove material from the flapper for more clearance.
You have to bend the wastegate flapper arm away from the turbo, grind the back WG flapper corner flat and then grind a depression in the turbo back plate.
Then you will have full travel.
I would port a little more out of each WG passage with care to the shapes as to direct air the direction you want and do the same on the WG entry in the turbo housing. Just do it up the most you can while the turbo is out of the car.
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