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    Thread: Verna 1.5L VGT - Turbo Dissection

    1. #11
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      No supaCrank it is vacuum based using a ECU controlled air solenoid. Check the first picture for the vacuum actuator & this link for VGT manual boost controller - Manual Boost Controller

      Here is picture from my car with the marked parts - check mainly the vacuum lines, VGT vacuum solenoid & vacuum pump.


      Even the new Hyundai Fluidic uses a vacuum controlled VGT.
      Last edited by eapen; 23rd Apr 2013 at 12:54.
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    2. #12
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      Notorious - I will not dare open other vehicles' turbo. If you try chasing me I'll do the Magician's act of disappearance

      Kash - Considering the cost of Hyundai Tucson parts, I would not dare to modify it. The Techline paint Turbo X was sourced from Demontweeks , UK Techline Turbo Blue Exhaust Coating - Demon Tweeks . The efficacy of the paint needs to seen since the first time I did it the coating wore off within 6 months.

      refer here: Exhaust Turbo Manifold Coating EGT Installation
      Last edited by eapen; 23rd Apr 2013 at 13:11.
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    3. #13

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      Really clean job and I liked the way everything was done (especially bead blasting).

    4. #14
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      Next time you need to do this - try using Walnut Shell Blasting.. or Soda Blasting to avoid pitting/scarring the surface.

      The former uses ground walnut shell ... and the later uses baking soda! You will get a clean surface with ZERO pitting.
      A closed mouth gathers no feet.

    5. #15

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      Great work buddy. You really spend more time on hands-on yourself than in-front of keyboard. Difference is obvious !

    6. #16
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      kb100 - I guess your ideas are from European VW TDi forums. If I have to source walnuts in India I'd have to visit Kashmir valley & ship them in sacks. Rather try with local peanuts & munch a few while the blasting process is going on.

      Techline specifically states to use metal shot blasting preferably aluminum oxide to promote the adherence of paint to the coating surface. They direct not to use glass or sand. However I had the EGR pipes blasted using sand & cleaned with diesel acetone since they were too thin for shot blasting.

      Coated the Turbo housing :
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      This procedure is not oriented for performance but primarily to reduce air temperatures under the bonnet. With the excess boost I am running I am clocking IATs over 65 d c. Heat wrapping / coating can also help the turbos attain peak boost faster. This is because not only does the air pressure serves to spin the turbine wheel but the contained heat energy helps too.
      Last edited by eapen; 29th Apr 2013 at 13:47.
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    7. #17

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      Quote Originally Posted by eapen View Post
      They direct not to use glass or sand.
      This is from an environment point of view probably.

    8. #18
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      No. Heat paint coatings are designed with ceramics in them. Micro fragments of glass or sand will reduce the adhesion of ceramic paint compound to metal & would cause them to flake.
      Last edited by eapen; 29th Apr 2013 at 14:02.
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    9. #19
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      Quote Originally Posted by eapen View Post
      I guess your ideas are from European VW TDi forums.
      BMW USA actually

      They use it to clean intake valves etc of carbon. I researched a little and found gazzillion videos out there. In any case Walnut Shell Media is apparently pretty common. Most of the dedicated blasting tool suppliers seem to have it.
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    10. #20
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      joeking : thanks for dropping by & servicing the turbo CHRA. Details here: - Nano Energizer Engine Oil Additive - Reduce Engine Sound, Increase Power Mileage - Page 33
      Last edited by eapen; 29th Apr 2013 at 15:10.
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