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twiceblown · 09-28-2005, 07:32 PM

well, it would have to be sealed pretty good, or at least equal to the other side. Since the additional spring power would have to come from boost, the pressure within each actuator needs to be close.

maybe someone can find a flexible diaphragm made of similar material that can be adapted to the stock arm. On the TD04s at least, there's a washer and a cone that hold the spring and diaphragm in place. putting another diaphragm (i hate typing that word) between the actuator body and the washer would be easy. Connecting it to the arm, on the other hand, would not!

i just had a thought: since both actuators need to see similar pressures from boost, how about machining out a new one (or a hard seal made of brass) that plugs up the large hole. A little bit of grease on the arm, and you would definitely get a good seal without the need for a diaphragm (there's that word again!). The stock hole is about 1/4" and the arm is about 3/16", so make a sleeve that's got an OD of just a bit more than 1/4" and an ID just a bit less than 3/16". Then slap on a fitting and you're good to go. let me see what i can find at McMaster Carr.

09-28-2005, 07:32 PM	#48 (permalink)
twiceblown Mmmmm, Boooooost! Join Date: Nov 1999 Location: Disneyheim Hills, CA Drives: 300 yards. Trader Rating: (26)	Re: Measuring stock exhaust restriction well, it would have to be sealed pretty good, or at least equal to the other side. Since the additional spring power would have to come from boost, the pressure within each actuator needs to be close. maybe someone can find a flexible diaphragm made of similar material that can be adapted to the stock arm. On the TD04s at least, there's a washer and a cone that hold the spring and diaphragm in place. putting another diaphragm (i hate typing that word) between the actuator body and the washer would be easy. Connecting it to the arm, on the other hand, would not! i just had a thought: since both actuators need to see similar pressures from boost, how about machining out a new one (or a hard seal made of brass) that plugs up the large hole. A little bit of grease on the arm, and you would definitely get a good seal without the need for a diaphragm (there's that word again!). The stock hole is about 1/4" and the arm is about 3/16", so make a sleeve that's got an OD of just a bit more than 1/4" and an ID just a bit less than 3/16". Then slap on a fitting and you're good to go. let me see what i can find at McMaster Carr.