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  1. #1
    Join Date
    Apr 2013
    Location
    Knoxville TN
    Posts
    2,317

    Default 2022 Sound Proofing

    I was climbing around a 2022 SL the other day.

    Anyone have feedback on the new sound proofing?

    This is the underside of the trans hatch. There is some under the engine hatch and over the fuel tank as I understand it.

    Overall, the new 1.7 trans are quiet compared to my 1.5 when taking a ride on the lake.




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    2018 Supra SL400

  2. #2
    Join Date
    May 2018
    Posts
    4,097

    Default

    Quote Originally Posted by MJHSupra View Post
    I was climbing around a 2022 SL the other day.

    Anyone have feedback on the new sound proofing?

    This is the underside of the trans hatch. There is some under the engine hatch and over the fuel tank as I understand it.

    Overall, the new 1.7 trans are quiet compared to my 1.5 when taking a ride on the lake.




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    Interesting choice of foam, very different approach as compared to dynamat style.

    I always thought the dynamat was more for sheet metal vibration control versus a sound absorbing material.

    Not the prettiest application. But if effective great.

    I will say my 1.76 new had a whine/ring to it at 1600-1700 rpm. But as it broke In with use, itís quiet now.


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    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  3. #3
    Join Date
    Oct 2020
    Location
    Michigan
    Posts
    73

    Default

    The 1.7 ratio transmission is vert quiet. Doesn't need soundproofing at all. I hated the 1.76 whine, but it was in a Moomba not Supra which wasn't soundproofed at all.
    2022 MB F22 Alpha
    2021 Mondo (sold)
    2020 Grand Island Fish
    2017 Sea-Doo Spark

  4. #4
    Join Date
    May 2018
    Posts
    4,097

    Default

    Quote Originally Posted by Ralphy View Post
    The 1.7 ratio transmission is vert quiet. Doesn't need soundproofing at all. I hated the 1.76 whine, but it was in a Moomba not Supra which wasn't soundproofed at all.
    My 1.5 was louder than my 1.76, about the same when both were new, but 1.76 quieter and I am at 51 hours.


    Sent from my iPhone using Tapatalk
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  5. #5
    Join Date
    Apr 2013
    Location
    Knoxville TN
    Posts
    2,317

    Default

    Quote Originally Posted by larry_arizona View Post
    I always thought the dynamat was more for sheet metal vibration control versus a sound absorbing material.

    Not the prettiest application. But if effective great.

    Sent from my iPhone using Tapatalk
    Agree.

    Was reading about someone who does this for a living in car audio and home theaters. The Dynamat is the damper, adding mass for vibration noises - thus you see in hot rod and muscle car test is. Where a closed cell foam is used to defuse (and probably deflect) more of the trans whining noises or engine roaring sounds.

    Supra is standard on trans hatch, engine cover, and around fuel cell.
    Moomba is trans hatch only.

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    2018 Supra SL400

  6. #6
    Join Date
    Mar 2021
    Location
    South Georgia
    Posts
    772

    Default

    Trans hatch door and cover made the biggest difference in my 21 Makai when I added foam insulation. The whine from transmission seems to be the most annoying sound. My engine is not really the problem.

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    2021 Moomba Makai
    Black Cherry Metal Flake & Fire Red
    Nibral OJ 15.5x15 Altitude/Wake prop w/1.76 trans v-drive
    Wet Sounds Rev 8's, 10's, & sub

  7. #7
    Join Date
    Jun 2020
    Posts
    13

    Default

    My 2022 SL550 is significantly quieter than my 2020 SL400 was (even after I had soundproofed it with dynamat, foam, and weather-stripping). The changes SC made definitely work.
    2022 Supra SL550 (current)
    2019 Adonia (75'x18' houseboat at Lake Powell - current)
    2021 Tige Z3 (past)
    2020 SL400 (past)
    Idaho

  8. #8
    Join Date
    May 2018
    Posts
    4,097

    Default 2022 Sound Proofing

    Cool, just ordered some self adhesive 2Ē sound absorbing foam.

    Engine,trans, main floor. I may also do the infloor cooler and engine dividers.

    Never thought the boat was loud, but the noise feed back in this thread sounds like itís a worthy off season project.

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    Last edited by larry_arizona; 09-30-2021 at 01:01 PM.
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  9. #9
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    620

    Default

    Quote Originally Posted by larry_arizona View Post
    Cool, just ordered some self adhesive 2” sound absorbing foam.

    Engine,trans, main floor. I may also do the infloor cooler and engine dividers.

    Never thought the boat was loud, but the noise feed back in this thread sounds like it’s a worthy off season project.

    Sent from my iPhone using Tapatalk
    What did you get? Link?
    I used Noico on mine and it helped a good bit but quieter is always better!
    2020 Supra SA

  10. #10
    Join Date
    May 2018
    Posts
    4,097

    Default 2022 Sound Proofing

    Quote Originally Posted by SONIC View Post
    What did you get? Link?
    I used Noico on mine and it helped a good bit but quieter is always better!
    Trying this stuff, low cost and easy.

    Sound Absorbing Foam 12 Pack, 12 x 12 x 2 inches Sound Proof Foam Panels, Soundproof Foam with Adhesives, Recording Studio Acoustical Treatment Soundproof Wall Panels Mushroom, Blue Wall Sound Panels https://www.amazon.com/dp/B097PZBYMV...ing=UTF8&psc=1

    I grabbed a 24 pk, says adhesive and foam is water friendly, if it works, great, if not, only out $50

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    Last edited by larry_arizona; 09-30-2021 at 01:44 PM.
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

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