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Get out of that hole! DIY seat risers...

Discussion in '3rd Gen. Tacomas (2016+)' started by mthopton, Feb 21, 2016.

  1. Jan 23, 2017 at 11:33 PM
    #61
    Bishop84

    Bishop84 Well-Known Member

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    Grade 8-10 bolts as mentioned still can sheer, the threads can pull out of the chassis as well, the fulcrum is just too much. Denial of personal injury is far too risky for me.
     
  2. Jan 24, 2017 at 4:43 AM
    #62
    mthopton

    mthopton [OP] Well-Known Member

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    I originally posted this thread and after reading many of the replies and concerns, I went back to the stock bolts/configuration. The addition of clazzio seat covers gave me just enough of an increase in height so as not to need them. After almost a year with the truck, I've become very satisfied with the seating position.
     
    CygnusX191 and GPsevinSixx like this.
  3. Jan 24, 2017 at 6:26 AM
    #63
    savethewheels

    savethewheels Well-Known Member

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    The seats in these are less than stellar (huge understatement in your case). In my previous car I had a set of fixed back Status Racing seats and they were the most comfortable seats I've ever sat in, even at long drives. Status also makes reclineable/adjustable seats, and I'm sure they're equally as amazing.
    Only reason I mention this is because I'm curious if you've considered aftermarket seats? It would be a less expensive change than buying a new truck.
     
    CygnusX191 likes this.
  4. Sep 2, 2018 at 9:03 PM
    #64
    taco59

    taco59 Well-Known Member

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    Just getting started
    Sub’d
     
  5. Sep 2, 2018 at 9:43 PM
    #65
    fgeorge097

    fgeorge097 Well-Known Member

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    Are these things safe in an accident? Aren't the seats designed for safety to not be messed with?
     
  6. Oct 4, 2018 at 10:41 PM
    #66
    Alnmike

    Alnmike Well-Known Member

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    First post ever. Just feel I have to say something as a mechanical engineer (non certified, but degreed).

    The fears for safety for a 3/4" higher seat is overstated. They are not going to shear suddenly because they are a tiny bit longer. These things have to be designed for a 4ft tall 80lb woman or a 7ft 500lb man.... Theres too much range there to worry about the tiny things. The factor of safety has to be there for the million different scenarios.

    Now: if you are a 7ft tall 600lb guy, dont touch your seat height, you probably are touching the upper limit of safety.
     
    ownubad, CygnusX191, slns831 and 5 others like this.
  7. Mar 9, 2019 at 12:59 PM
    #67
    Grossomotto

    Grossomotto Complete 3rd Member

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    Thanks for all the info in this thread, I’m trying to make my own and get the replacement bolts
     
  8. Mar 9, 2019 at 1:32 PM
    #68
    JacksTurdGen

    JacksTurdGen 2018 double cab short bed

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    What about safety in the event of a crash...
     
  9. Mar 9, 2019 at 1:35 PM
    #69
    tonered

    tonered tacorider

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    You're going to want to go wider on that spacer.

    Just my $0.001.
     
    CygnusX191 and shakerhood like this.
  10. Mar 9, 2019 at 1:49 PM
    #70
    Grossomotto

    Grossomotto Complete 3rd Member

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    Where’s the cheapest place for the replacement M10 X 50 X 1.25 bolts?

    I’m seeing them for $7 each which I’m not paying that much
     
  11. Mar 9, 2019 at 2:13 PM
    #71
    tonered

    tonered tacorider

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    I got mine at ACE (10.9s) for $2.80 each. O'Reillys had a three pack for $4.

    IMG_20190309_092052.jpg
     
    CygnusX191 likes this.
  12. Mar 9, 2019 at 4:06 PM
    #72
    Grossomotto

    Grossomotto Complete 3rd Member

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    Thanks I’ll check there

     
    tonered likes this.
  13. Mar 9, 2019 at 4:16 PM
    #73
    4BYTOY

    4BYTOY Well-Known Member

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    I agree. Just wondering, if anyone else finds the rear view mirror too low and obstructing your vision at times when looking to the right?
     
    CygnusX191 likes this.
  14. Mar 9, 2019 at 5:40 PM
    #74
    tonered

    tonered tacorider

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    Yup! And, birddawgindustries.com has your answer. Their mirror riser is made for 2nd Gens, but still fits 3rd Gens.
     
    4BYTOY likes this.
  15. Mar 11, 2019 at 7:57 AM
    #75
    Grossomotto

    Grossomotto Complete 3rd Member

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  16. Mar 11, 2019 at 9:08 AM
    #76
    mtskibum16

    mtskibum16 Well-Known Member

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    Do not cheap out on bolts for this project. $7 per bolt is not expensive...$14 for a mod that could affect your safety. Buy quality bolts from a quality source or move along.

    As another member posted, this is *probably* ok because of the safety factors involved in the design of the seat mounting. However, you don't have to just consider the shear strength of a bolt because you have changed the arrangement from single shear and axial forces and added moment forces to the attachment. Is it significant enough of a change to be a safety concern? Maybe not, I'd have to do the analysis. But maybe.

    However, I will say, if you are going to do this mod, DO NOT USE CHEAP BOLTS. You want to use high quality bolts of at least the factory specified grade. They don't spend the extra money to put higher grade bolts in this application just to make the truck more expensive...
     
    r1200gs4ok likes this.
  17. Mar 11, 2019 at 9:24 AM
    #77
    tonered

    tonered tacorider

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    I did check the calcs with Grade 10.9 bolts and 1.0in spacers. High margins there. I've been meaning to recheck it for 1.5in spacers.
     
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  18. Mar 11, 2019 at 9:27 AM
    #78
    Grossomotto

    Grossomotto Complete 3rd Member

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    10.9 is grade 8 equivant

    “A tempered medium carbon steel. Class 10.9 is stronger than class 8.8, and is commonly found in high strength automotive applications. Class 10.9 is similar to grade 8. ... A low carbon steel for general use.“

     
  19. Mar 11, 2019 at 10:10 AM
    #79
    mtskibum16

    mtskibum16 Well-Known Member

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    Checked what calcs?

    I didn't look at your link, just stating it's not an expensive part and not somewhere to cheap out. Are the factory bolts 10.9? I would guess so but don't know. Since you scoffed at paying $14 I assumed you were looking at some $2 low grade option instead. So you saved what, $5? *shrug*
     
  20. Mar 11, 2019 at 10:14 AM
    #80
    tonered

    tonered tacorider

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    The bolt checks in your post?

    Yes.
     

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