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SB_GLI
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« on: September 07, 2016, 10:51:46 AM »
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Most of these cars have issues with actuators.
I am battling an A3 who's actuator seems to lose tension once the engine bay gets hot. When cold, the wastegate flapper is firmly seated. Once stuff gets hot, the arm pushes out and the flapper is no longer seated to the housing. Is this one of the common issues with the actuators? |
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littco
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« Reply #1 on: September 07, 2016, 02:57:58 PM »
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I am battling an A3 who's actuator seems to lose tension once the engine bay gets hot. When cold, the wastegate flapper is firmly seated. Once stuff gets hot, the arm pushes out and the flapper is no longer seated to the housing.
Is this one of the common issues with the actuators?
Does this happen even if you add more preload to the actuator? Something else worth noting and that is that the boost feed taken for the N75 doesn't have the same pressure the map sensor sees, it seems that because its placed in the scroll fairly early on the pressure is less at this point than actually in the system, it kind of gives a false impression when mapping.. |
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SB_GLI
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« Reply #2 on: September 07, 2016, 05:09:44 PM »
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Does this happen even if you add more preload to the actuator?
Adding a 3-4mm more preload on the rod bottomed the actuator out. |
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littco
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« Reply #3 on: September 08, 2016, 10:37:45 AM »
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Adding a 3-4mm more preload on the rod bottomed the actuator out.
Then I fear the actuator is goosed and needs replacing |
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vwaudiguy
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« Reply #4 on: September 08, 2016, 10:47:07 AM »
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« Last Edit: September 08, 2016, 11:12:08 AM by vwaudiguy »
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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ktm733
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« Reply #5 on: September 08, 2016, 05:27:12 PM »
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$180!! I could make one for less!
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littco
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« Reply #6 on: September 09, 2016, 03:55:33 PM »
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Buy a 10psi t2/t3 actuator off ebay for about $40 Cut the old actuator off, drill.to holes to.match the stufs on the new actuator and use a long hex bar bolt an m6 rod to lengthen the rod to the right length |
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vwaudiguy
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« Reply #7 on: September 14, 2016, 11:50:25 AM »
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Buy a 10psi t2/t3 actuator off ebay for about $40
Cut the old actuator off, drill.to holes to.match the stufs on the new actuator and use a long hex bar bolt an m6 rod to lengthen the rod to the right length
1. How long would that take you to do? Time = money. 2. I never said it was the best/cheapest option. Just posted it because it was an option. |
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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littco
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« Reply #8 on: September 14, 2016, 02:48:48 PM »
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1. How long would that take you to do? Time = money.
2. I never said it was the best/cheapest option. Just posted it because it was an option.
20 mins max |
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vwaudiguy
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« Reply #9 on: September 14, 2016, 02:50:52 PM »
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20 mins max
It would take you that long to find/pay for the actuator online, then sign for it, unbox it when it arrives. |
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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littco
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« Reply #10 on: September 15, 2016, 11:17:54 AM »
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It would take you that long to find/pay for the actuator online, then sign for it, unbox it when it arrives.
yeah and then spend the time you saved and 2 hours getting the right spring in there and setup! It was only an option and in my mind the best value for money and time spent... But hey just my opinion and not like I haven't done both to know... |
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vwaudiguy
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« Reply #11 on: September 15, 2016, 11:47:38 AM »
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Thanks for splitting the thread (I assume Nyet) it was going off course anyway!  |
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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fknbrkn
Hero Member
Karma: +185/-23
 Offline
Posts: 1454
mk4 1.8T AUM
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« Reply #12 on: September 16, 2016, 03:07:00 AM »
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the best way i found on KKK turbos is to cut old one, drill 2 holes and mount a kinugawa unit. rod comes from stock actuator with some M6 thread to connect it with kinugawa im using this guy for a 1.5 years with my hybrid turbo. at cold winter and hottest summer days and there is no noticeable difference no rocket science here or just chinese gt28 actuator which perfectly fits at K03 turbos (second picture - gt28 act with own rod)   |
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