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    Thread: A very technical build - PART II

    1. Member MechEngg's Avatar
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      03-03-2012 06:52 PM #51
      Quote Originally Posted by kilimats View Post
      BTW i read somewhere that your compressor was super quiet, barely hear them at idle due to having sound barrier deadening material, could you show the coverage and how/where it's laying ?
      I can do you up a few sketches and take a few pics tomorrow. I am doing the vibration isolation material tomorrow (kinda like your second skin stuff) and then I am doing the b-quiet vcomp airborne sound absorbing material when the false floor gets constructed.

    2. Member .Ant's Avatar
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      03-03-2012 07:55 PM #52
      That shut off valve was a great idea. I'm definitely stealing that one.
      Quote Originally Posted by Mr. Rictus
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    3. Moderator kilimats's Avatar
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      03-03-2012 09:23 PM #53
      Quote Originally Posted by MechEngg View Post
      I can do you up a few sketches and take a few pics tomorrow. I am doing the vibration isolation material tomorrow (kinda like your second skin stuff) and then I am doing the b-quiet vcomp airborne sound absorbing material when the false floor gets constructed.
      I've always had higher expectation for vibration deadening material, always expected to hear the difference instantly but it has always been very subtle, I just got some sound barier from second skin (luxury liner, not PRO) and will encapsulate the compressor with it leaving just enough room to avoid overheating, hopefully this will make a night and day diff. Cant wait to see how you complete your setup
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      Quote Originally Posted by dele
      The guys on coils can pull off their own Airless pride thread cos they clearly are the underdogs in the air/static debate, kinda like the equality movement for women.

    4. Member MechEngg's Avatar
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      03-07-2012 12:23 PM #54
      Sorry for taking my sweet time getting back to you Matt, but here is my ultimate sound proofing plan. The b-quiet ultimate vibration absorbing on the bottom of the whole trunk with the following:

      **Scale: NTS (AKA take your own measurements you lazy a$$)
      Last edited by MechEngg; 03-07-2012 at 01:00 PM.

    5. Member arethirdytwo's Avatar
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      03-07-2012 12:44 PM #55
      Not to scale, do not want

    6. Member MechEngg's Avatar
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      03-07-2012 01:01 PM #56
      Quote Originally Posted by arethirdytwo View Post
      Not to scale, do not want
      fixed

    7. Member arethirdytwo's Avatar
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      03-07-2012 01:13 PM #57
      Awesome

    8. Member Twilliams83's Avatar
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      03-07-2012 04:15 PM #58
      Just when i thought you were crazy a guy on air dociety started a build uding 4 ob2
      ¯\_(ツ)_/¯
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    9. Member arethirdytwo's Avatar
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      03-07-2012 04:16 PM #59
      At this point I feel like we would be better served with a large motor driven compressor... FOUR OBD2's?!?!

    10. Moderator kilimats's Avatar
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      03-10-2012 04:04 PM #60
      Quote Originally Posted by MechEngg View Post
      Sorry for taking my sweet time getting back to you Matt, but here is my ultimate sound proofing plan. The b-quiet ultimate vibration absorbing on the bottom of the whole trunk with the following:

      **Scale: NTS (AKA take your own measurements you lazy a$$)
      thx for sharing the plan, cant wiat to see this pictured and in video ?
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      Quote Originally Posted by dele
      The guys on coils can pull off their own Airless pride thread cos they clearly are the underdogs in the air/static debate, kinda like the equality movement for women.

    11. Member MechEngg's Avatar
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      03-18-2012 07:24 PM #61
      Quote Originally Posted by Twilliams83 View Post
      Just when i thought you were crazy a guy on air dociety started a build uding 4 ob2
      I was going to do 4 of them but took a few measurements and it would have been too tight a fit for my liking. If you got the space then go for it

      Quote Originally Posted by arethirdytwo View Post
      At this point I feel like we would be better served with a large motor driven compressor... FOUR OBD2's?!?!
      I haven't seen an EDC for a 1.8t yet but i'm sure something could be rigged up. We just have too tight an engine bay for it

      Quote Originally Posted by kilimats View Post
      thx for sharing the plan, cant wiat to see this pictured and in video ?
      Picture you say? Well this is the start of the plans



      Badly in need of a drop but other than that it is looking just how i envisioned

    12. Member Niagara_V_Dub's Avatar
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      03-18-2012 08:42 PM #62
      Is that the rear deck lid in the 2nd to last pic? Does it cut down alot on noise?
      Insert witty quote

    13. Member MechEngg's Avatar
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      03-18-2012 08:48 PM #63
      Yes it is the rear deck and it makes a night and day difference. There are basically 2 paths for soundwaves to get from the trunk to the passenger compartment in a jetta, 1 is the back seats (which are pretty darn good at absorbing sound waves) and the think rear deck. It makes a killer difference and i would HIGHLY recommend it to anybody with a jetta! On a golf you can do the same with your rear flip lid but you might need to reinforce the string pulls because this vcomp is pretty heavy
      http://www.b-quiet.com/vcomp.html

    14. Member Niagara_V_Dub's Avatar
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      03-18-2012 08:57 PM #64
      I might just put a few strips of the vcomp stuff on the deck lid to stop vibrations from tha thump in trunk. I will be vcomping the rest of the trunk though.
      Insert witty quote

    15. Member MechEngg's Avatar
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      03-18-2012 11:44 PM #65
      Quote Originally Posted by Niagara_V_Dub View Post
      I might just put a few strips of the vcomp stuff on the deck lid to stop vibrations from tha thump in trunk. I will be vcomping the rest of the trunk though.
      To stop vibrations use the b-quiet ultimate (dynamat knock off for less than half price). The vcomp stuff is for eliminating airborne sounds. So use the dynamat for all of the sheet metal around the compressor(s) and then use the vcomp between you and the compressors

    16. 03-19-2012 09:48 AM #66
      Welcome to the dark side of road noise reduction, my friend.

      Build is looking great.

      Pro tips to those that just came to this thread:

      "Deadener" (like Dynamat) is for VIBRATION only, and won't work well (or at all) with stopping airborne noise. IT WILL help reduce rattles.

      "Sound proofer", like the V-Comp composite, is for AIRBORNE noise (road/engine/tire noise, etc.). The open cell foam scatters sound waves due to it's porous surface, and the heavy vinyl does it's best to keep that scattered sound away from your ears.

      I know I'm sounding like a broken record here, but it'll save you all money and heartache in the end.

      By the way, use this adhesive if you want the VComp (or carpet, vinyl, etc.) to stay put forever.
      Last edited by John Reid; 03-19-2012 at 09:52 AM.

    17. Member tonyb2580's Avatar
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      03-19-2012 11:10 AM #67
      very interesting... ive been toying with two ideas.. a better drainage system for my tank and to quiet her down.. because she is loud.. doesnt bother me much because i dont play around much and the compressor is on maybe 1 minute if so much... but.. good **** here

    18. Member MechEngg's Avatar
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      03-19-2012 12:37 PM #68
      Quote Originally Posted by tonyb2580 View Post
      very interesting... ive been toying with two ideas.. a better drainage system for my tank and to quiet her down.. because she is loud.. doesnt bother me much because i dont play around much and the compressor is on maybe 1 minute if so much... but.. good **** here
      Yeah the drain valve I have on the bottom of the tank will be fed to outside the car. Great idea to empty water condensate from the buffer tank because it acts like a giant water trap
      What compressor and tank are you running to get a 1 minute fill time? Must be an OB2 with a 3 gallon I bet

    19. Member .Ant's Avatar
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      03-19-2012 12:40 PM #69
      Quote Originally Posted by MechEngg View Post
      Yeah the drain valve I have on the bottom of the tank will be fed to outside the car. Great idea to empty water condensate from the buffer tank because it acts like a giant water trap
      I was wondering how you were planning on draining that tank.
      Quote Originally Posted by Mr. Rictus
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    20. Moderator kilimats's Avatar
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      03-19-2012 02:16 PM #70
      I always thought the vibration layer took care of blocking of waves and for that reason have been greatly disappointed when i had it in my ex-MK3. I learned about the three layers (Vibration/Foam/Vynil) after installing the bags last year and can't wait to hear the difference, I'll order all the required stuff after moving in our new townhome next month.

      I'll try to take a before and after MP3 comparaison as well.

      MechEng will you add a Vynil layer at some point or you're already satisfied with the dampening result ?

      I found this company selling the sound dampening material at killer price: http://www.sounddeadenershowdown.com/cgi-bin/index.cgi

      Bquiet is indeed cheaper than dynamat but still more expensive than second Skin and the company linked above

      EDIT: another critical thing i learned a few weeks ago is that Vibration dampeners layer should really only be applied to 25% of the center panels, in my previous project i covered the WHOLE DAMN TRUNK area with it, waste of money and extra unneeded weight
      Last edited by kilimats; 03-19-2012 at 02:33 PM.
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      Quote Originally Posted by dele
      The guys on coils can pull off their own Airless pride thread cos they clearly are the underdogs in the air/static debate, kinda like the equality movement for women.

    21. 03-20-2012 09:10 AM #71
      Yeah, that's true... but since I do it for my audio itch, I usually go off with deadener and cover the entire interior of the car, doubling up in some key areas.

      I do this to lessen the localization of my speakers due to their vibration. It's partly habit from past competition installs, but also since I have 8" midbasses and two 15" subs, so vibration is something I'm familiar with.

      I think in the case you guys are dealing with, which is a specific component making the noise, it should be doable, and produce good results.

      I have to say that in my JSW, pretty much all of the road noise now comes from my windows, which I unfortunately can't do anything about.

    22. Member MechEngg's Avatar
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      03-21-2012 11:46 PM #72
      ^^^Thanks for cluttering up my thread jerks!

      Anyways i finally found a house to buy so that has almost gone through so i now have a free weekend coming up. Got some work done this evening. Pictures!!

      Work area

      Keeping the wiring very clean this time, well it was clean last time too, just cleaner i guess

      Wires on the right are quick disconnects for the compressors. Rated at 10AWG each side i am running them as two positives to the compressors. Going to ground the compressors to the metal vibration frame, which will ground to the frame of the car. Tubing coming from the shut off valve in the trunk already

      Pressure gauge and pressure transducer

      Air tool quick connect directed so i have access from the back seats

      205psi safety valve to prevent over pressurization

      Water trap to manifold. also a good picture of the relay wiring. Relays are placed as such so that i have access to swap them out or check them or even just pull them from the trunk compartment in the side electrical box



      Mocked up

    23. Member Niagara_V_Dub's Avatar
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      03-22-2012 12:20 AM #73
      Did you use liquid ptfe? How did you like it? Planning on using it as well.
      Insert witty quote

    24. Moderator kilimats's Avatar
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      03-22-2012 12:23 AM #74
      congrats on the house !!! going through the same and i'm sure you're excited as i am
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      Quote Originally Posted by dele
      The guys on coils can pull off their own Airless pride thread cos they clearly are the underdogs in the air/static debate, kinda like the equality movement for women.

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      03-22-2012 12:24 AM #75
      so much greatness!

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