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Thread: Possible Crack in Frame

  1. #1
    Join Date
    May 2017
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    Tucker
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    Default Possible Crack in Frame

    So I ended up buying the laguna blue from Matt. I'm doing an oil change and I see this. I understand that's a framerail. How serious of a problem is that?
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  2. #2
    Join Date
    Jul 2009
    Location
    Roswell
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    2,432

    Default

    Its not a frame rail as a Miata does not have a frame. A miata is a unibody with two separate front and rear subframes. What that is , is a sheet metal stamped "frame" that helps keep the unibody stiff. what you are seeing is unfortunate but not fatal. Many have much worse than that.
    Last edited by Dynra Rockets; 11-28-2017 at 06:49 PM.
    92 Italia "Competizione Speciale". 91 BRG "Judy", '69 Corvette "Mojo". '14 F150 Coyote 5.0. Looking for something blue.

  3. #3
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    Apr 2009
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    Decatur
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    Frame rails provide stiffness and keep the body from twisting. These look a bit worse than the usual beat to crap ones that we're used to seeing, but there's a good and pretty cheap solution. Flyin' Miata sells frame rail stiffeners that go over the entire rail, then bolt right through the floor. A set will run you around $200, and installation will take you a couple hours in the garage. If you were planning to use the car for a lot of track days, I'd consider getting that welded before putting the rail stiffeners on. It's pretty common to have to beat the rails with a bfh (big f:;(k hammer) to put the rails on. Boundary Engineering sells a set for about $150. The FM set can be upgraded down the road to take the "butterfly brace" they sell to box up the trans tunnel.
    Red '91, MSM longblock/BEGI-FM hybrid turbo w/2871r/3"Enthuza/Hydra2.7/700cc/Ohlins/
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  4. #4
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    May 2017
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    Tucker
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    Any shops you recommend to weld the crack, I have the skills to install the fm rails but not welding.

  5. #5
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    Mar 2009
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    Suwanee GA
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    What part of town are you in? Any good bodyshop or even most muffler shops can stitch it back up.

    PS. I've got a used set of frame rails if you want a cheaper-than-new good used option.
    David Luney - Suwanee GA
    miatastuff@bellsouth.net
    2004 RX-8, 2005 MCS, 08 Red GT, 1992 Spec Miata and a parts car or two.

  6. #6
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    May 2017
    Location
    Tucker
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    I live in Tucker, what kind of frame rails and how much?

  7. #7
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    Quote Originally Posted by inferno_miata View Post
    I live in Tucker, what kind of frame rails and how much?
    They are Reverend G rails I believe. There is a small scrape on one end. $50 for the pair. The price is adjusted down as you will need 28 nut/bolt/washers as the hardware was lost or I can supply OEM mazda bolts.

    For the welding, you may try Michael Cotrell at Sentry Paint and Body in Tucker. Very experience in Miata repair.
    Last edited by miatastuff; 11-29-2017 at 07:50 AM.
    David Luney - Suwanee GA
    miatastuff@bellsouth.net
    2004 RX-8, 2005 MCS, 08 Red GT, 1992 Spec Miata and a parts car or two.

  8. #8
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    May 2013
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    Roswell
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    Also recommend Mike at Sentry. He's good people.

  9. #9
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    May 2017
    Location
    Tucker
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    I'll definitely give Mike a call then. Thanks for the offer David I'll keep the rails in mind right now I need new brakes and a few other higher priority things for me to get it back into good shape.

  10. #10
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    FYI, Reverend G made his rails by coming to my house and measuring my Boundary Engineering rails. They're carbon copies. $50 is a ridiculously cheap price.
    Red '91, MSM longblock/BEGI-FM hybrid turbo w/2871r/3"Enthuza/Hydra2.7/700cc/Ohlins/
    RacingBrake11"BBK/SS HDDD/Nakamae everything/KGWorks/Zoom/We're done!

  11. #11
    Join Date
    Aug 2015
    Location
    Stone Mountain
    Posts
    106

    Default

    I have a set of Rev G frame rails on the NA8 and the improvement can be felt, plus it makes jacking the car a little easier. Just my
    1996 White--MAGNAFLOW Catback--Illumina/FMSprings--Rev-G Frame Rails--Direzza Star Spec--TWM Big Type R Shifter--CIBIEs w/ OSRAM NBreakers--Nardi Comp Leather 330mm

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